Class / Patent application number | Description | Number of patent applications / Date published |
385043000 | Tapered coupler | 68 |
20080219622 | OPTICAL FIBRE COUPLING SYSTEM - An optical fibre coupling structure comprising an optical fibre having an elongate input surface and shaped so that the diameter of the core of the fibre reduces in one dimension away from the input while increasing in the other dimension away from the input to form respective convergent and divergent surfaces, towards an output which is more circular than the input. | 09-11-2008 |
20080298746 | Optical Fiber Side Coupler for Coupling Light Between a Multimode Optical Fiber and a Cladding Pumping Optical Fiber - An optical fiber side coupler apparatus comprising a first optical fiber and at least one multimode (MM) optical fiber having a core, the MM optical fiber for delivering light to the first optical fiber. The MM optical fiber can comprise a first length having a first location therealong wherein the core comprises a first cross sectional area A | 12-04-2008 |
20080317409 | Sealed Tube Coupling for Optical Fiber Tubes - A coupling for conduit tubes ( | 12-25-2008 |
20090016680 | METHOD AND APPARATUS FOR MINIMIZING PROPAGATION LOSSES IN WAVELENGTH SELECTIVE FILTERS - The present invention is a method and an apparatus for minimizing losses in wavelength selective filters. In one embodiment, an apparatus includes a waveguide bus defined in a first crystalline layer of the apparatus, for receiving incoming light, a resonator defined in the first crystalline layer, and a coupling structure defined in a second polysilicon or amorphous silicon layer of the apparatus, for coupling a selected wavelength of the incoming light from the waveguide bus to the resonator. | 01-15-2009 |
20090016681 | Optical fiber configuration for dissipating stray light - An optical transmission fiber is formed to include a relatively low-index, relatively thin outer cladding layer disposed underneath the protective polymer outer coating. Stray light propagating along an inner cladding layer(s) within the fiber will be refracted into the thin outer cladding (by proper selection of refractive index values). The thin dimension of the outer cladding layer allows for the stray light to “leak” into the outer coating in a controlled, gradual manner so as to minimize heating of the coating associated with the presence of stray light. The inventive fiber may also be bent to assist in the movement of stray light into the coating. | 01-15-2009 |
20090022456 | OPTICAL FIBER PROBE TIPS AND METHODS FOR FABRICATING SAME - Optical fiber probe tips and methods for fabricating the same are presented. One method entails immersing a distal end of an optical fiber having a cladding and a core into an etching solution and simultaneously etching the cladding and the core using the etching solution for tapering the cladding and the core to form a tapered cladding and a tapered core tip. The optical fiber probe tips are suitable for near-field, scanning, optical microscopy (NSOM). | 01-22-2009 |
20090046979 | VARYING REFRACTIVE INDEX OPTICAL MEDIUM USING AT LEAST TWO MATERIALS WITH THICKNESSES LESS THAN A WAVELENGTH - An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly different refractive indices. The thickness of the layers of at least one of the materials is substantially less than the effective light wavelength of interest. The effective index of refraction in a local region within the medium depends on the ratio of the average volumes of the two materials in the local region. A graded index of refraction is provided by varying the relative thicknesses of the two materials. | 02-19-2009 |
20090060417 | Optical Fiber Fundamental Mode Field Expander - A device for providing an expanded mode field from a single mode optical waveguide is formed by fusing a length of single mode optical fiber with a length of fiber rod absent a cladding and adiabatically tapering the fused region. The length of single mode fiber has a core having a refractive index n | 03-05-2009 |
20090087144 | OPTICAL COUPLING DEVICE - An optical coupling device for coupling an optical signal propagating in an optical fiber or space to an optical waveguide includes a lower cladding layer formed on a substrate, an optical waveguide formed on the lower cladding layer such that the tip of the optical waveguide points to an end portion of the lower cladding layer, and having a tapered distal end portion, and an upper cladding layer continuously formed on the lower cladding layer and on the distal end portion of the optical waveguide from the end portion of the lower cladding layer to the distal end portion of the optical waveguide, and having a refractive index higher than that of the lower cladding layer. The upper cladding layer draws light having entered the end portion of the lower cladding layer toward the upper cladding layer, and couples the light to the distal end portion of the optical waveguide. | 04-02-2009 |
20090154879 | Means of Coupling Light Into Optical Fibers and Methods of Manufacturing a Coupler - The invention relates to a pump coupler ( | 06-18-2009 |
20090190884 | OPTICAL FIBER PART AND LASER PROCESSING MACHINE - An optical fiber part includes an optical fiber having a main fiber, a taper fiber and a small-diameter fiber. The core diameter of the taper fiber decreases along an optical axis. Further, a heat-radiation silicon adhesive that is a highly heat-conductive material having heat conductivity of 4 W/m·K or higher has been applied to the entire area of the outer circumference of the taper fiber and a part of the small-diameter fiber next to the taper fiber. An input end of the optical fiber is connected to a semiconductor laser having an output power of 10 W. Light output from the laser propagates through the optical fiber and output from the output end. A part of light that has propagated through the main fiber and entered the taper fiber is output through the cladding thereof. Heat generated by light output from the cladding is transferred through the heat-radiation silicon adhesive and radiated. | 07-30-2009 |
20090202204 | OPTICAL COUPLER, A METHOD OF ITS FABRICATION AND USE - The invention relates to: An optical coupler for coupling light from at least two input fibres into one output fibre. The invention further relates to a method of fabricating and to the use of an optical coupler. The object of the present invention is to provide an optical coupler, which is relatively easy to manufacture. The problem is solved in that the coupler comprises a) an input section comprising at least two input fibres, which are bundled over a bundling-length and having an output end face at one end of the bundling-length; and b) an output section comprising an output fibre comprising a confining region for confining light propagated in said input fibres and a surrounding cladding region and having an input end face; | 08-13-2009 |
20090232453 | Tapered Fiber Retroreflector - An expanded-beam all-glass retroreflector for a fiber laser cavity. The retroreflector consists of a section of a tapered double-clad fiber for beam expansion, e.g. a tapered section of the laser fiber itself, or a piece of coreless fiber spliced to the laser fiber, and a reflective surface for reflection of the expanded beam back into laser cavity through the tapered fiber section. | 09-17-2009 |
20090252456 | OPTICAL MODE-CONVERTER STRUCTURE - An apparatus comprising an optical-mode-converter structure. The optical-mode-converter structure includes a tapered optical core on a planar substrate, an optical cladding layer covering the tapered optical core and a mode-expanding layer. The mode-expanding layer covers the tapered optical core and is located in-between the tapered optical core and the optical cladding layer. The mode-expanding layer has a refractive index that is in-between a refractive index of the tapered optical core and a refractive index of the optical cladding layer. | 10-08-2009 |
20090285531 | OPTICAL TRANSMISSION STRUCTURAL BODY, OPTICAL WAVEGUIDE, OPTICAL WAVEGUIDE FORMATION METHOD, AND OPTICAL WIRING CONNECTION BODY - An object of the present invention is to provide an optical transmission structural body capable of preferably transmitting an optical signal between an optical wiring and an optical waveguide irrespective of a shape of a portion of the optical wiring, the portion being connected to a core part of the optical waveguide. | 11-19-2009 |
20100054663 | SPOT SIZE CONVERTER - A spot size converter has a first core, a larger second core, and a clad disposed on a substrate. The first core has a rectilinear cross-sectional shape and is embedded in the clad, except at its ends. One of these ends has a sloping surface along which the thickness of the first core tapers gradually to zero. The second core, which has a refractive index intermediate between the refractive indexes of the first core and clad, sits on the clad and covers the sloping end surface of the first core. Light propagates through the first core, then through the second core into an external optical device, or propagates from an external optical device through the second core into the first core. This arrangement provides a spot size converter having an easily manufacturable structure and no polarization dependency. | 03-04-2010 |
20100080509 | Fiber optic coupler with variable coupling ratio and manufacturing method thereof - A fiber loop formed by bending of a connection section between the first fiber and the second fiber includes a coupling region and an upper taper region as well as a down taper region arranged symmetrically on two sides of the coupling region. Then the fiber optic splitter with the fiber loop is assembled with a splitting ratio modulation mechanism. Thus the manufacturing of the fiber optic power splitter with variable splitting ratio is simplified and this favors production and applications of the device. Moreover, the splitting and modulation quality of the splitter are stable and are controlled precisely. Thus the economic benefits of the device in manufacturing, operation quality and product competitiveness are all improved. | 04-01-2010 |
20100166369 | CROSS-TYPE LIGHT GUIDE - With the width d of the incidence-side light guide portion of a first light guide and the width d of the incidence-side light guide portion of a second light guide, the width W | 07-01-2010 |
20100183261 | MULTIMODE FIBER OUTER CLADDING COUPLER FOR MULTI-CLAD FIBERS - A multimode fiber coupler has a structure in which a plurality of tapered pump fibers are coupled laterally to a multi-clad fiber, such as a double clad fiber (DCF). Such coupler is produced by first forming a plurality of tapered pump fibers and positioning them around the multi-clad fiber, thus forming a fiber bundle. Then, the fiber bundle is twisted and fused so that the input pump fibers converge towards a waist and then diverge from it. The diverging portions of the pump fibers may be removed from the structure. Also, at the waist, the structure may be cleaved and the portion with the converging pump fibers is then spliced with a multi-clad fiber which is similar or identical to the one in the middle of the bundle. | 07-22-2010 |
20100202734 | TAPERED WAVEGUIDE COUPLER AND SPECTROMETER - A method of forming a waveguide, the method comprising the steps of: forming a multilayer stack of light guiding layers; and delaminating the multilayer stack between at least two of the light guiding layers to form a waveguide between the light guiding layers; in which the patterned region has converging sides and the waveguide is tapered, the multilayer stack having increased transmissivity at a region corresponding to a selected thickness of the waveguide. A tapered waveguide is also disclosed, comprising: a multilayer stack of light guiding layers; the multilayer stack defining a channel between at least a first waveguiding layer and a second waveguiding layer; the channel having a diminishing thickness in a first direction; and at least one of the first waveguiding layer and the second waveguiding layer having a region of increased transmissivity adjacent a selected thickness of the core. Methods for the use of the tapered waveguide as an optical coupler or spectrometer are also disclosed. Methods for enhancing the optical resolution of the taper waveguide when operated as a spectrometer are also disclosed. | 08-12-2010 |
20100278486 | Fiber Based Laser Combiners - An all-fiber combiner device is described for combining multiple high power inputs, such as high power laser inputs. The device includes a first tapered fiber section made from fibers that allow for efficient size reduction of the optical signals. The output of the first tapered fiber section may then be coupled to a multimode output fiber for delivery of the combined power beam. Alternately, the first tapered section can be coupled to a second, multimode, tapered section, which provides further size reduction of the core for splicing into a final output fiber, while adding cladding to the main fiber. | 11-04-2010 |
20100278487 | PHOTONIC CRYSTAL ELEMENT - A waveguide stub is connected to a pillar-type square-lattice photonic crystal waveguide. Within the waveguide stub, the diameter of a defect is made larger than that of the original photonic crystal waveguide thereby reducing the group velocity of a guided light. The original waveguide and the waveguide stub are smoothly connected via a taper waveguide. Because of low group velocity of light in the waveguide stub, free spectral range (FSR) decreases thereby allowing the size of the waveguide stub to be reduced. | 11-04-2010 |
20100310210 | OPTICAL FIBER STRUCTURE, SYSTEM FOR FABRICATING THE SAME, AND BLOCK-LIKE CHIP FOR USE THEREIN - An optical fiber structure ( | 12-09-2010 |
20100322560 | TRANSITION DEVICE FOR OPTICAL WAVEGUIDES - A transition part ( | 12-23-2010 |
20110002584 | ANNULAR SIDE FIRE OPTICAL DEVICE FOR LATERALLY REDIRECTING ELECTROMAGNETIC RADIATION - An annular side fire optical device for laterally redirecting electromagnetic radiation comprises a tapered section of silica, a conical section of silica adjoining the tapered section and an annular beveled end surface. The tapered section of silica has a diameter that increases with distance along a longitudinal axis in a direction toward a transmitting end. The conical section of silica comprises a wall of silica surrounding a conical bore. The conical bore has a diameter that increases with distance along the longitudinal axis in a direction toward the transmitting end. The annular beveled end surface is formed in the wall of silica at the transmitting end and is angled relative the longitudinal axis such that electromagnetic radiation propagating along the longitudinal axis through the conical section is reflected by the beveled end surface at an angle that is transverse to the longitudinal axis. | 01-06-2011 |
20110002585 | FIBER-BASED MID-IR SIGNAL COMBINER AND METHOD OF MAKING SAME - The present invention is generally directed to a device comprising multiple specialty glass optical fibers that combines several different mid-infrared optical signals from multiple optical fibers into one signal in a single optical fiber. In addition, the present invention provides for a method of making the device. | 01-06-2011 |
20110044582 | EFFICIENT COLLIMATION OF LIGHT WITH OPTICAL WEDGE - Embodiments of optical collimators are disclosed. For example, one disclosed embodiment comprises an optical waveguide having a first end, a second end opposing the first end, a viewing surface extending at least partially between the first end and the second end, and a back surface opposing the viewing surface. The viewing surface comprises a first critical angle of internal reflection, and the back surface is configured to be reflective at the first critical angle of internal reflection. Further, an end reflector is disposed at the second end of the optical waveguide, and includes a faceted lens structure to cause a majority of the viewing surface to be uniformly illuminated when uniform light is injected into the first end and also to cause a majority of the injected light to exit the viewing surface. | 02-24-2011 |
20110097038 | OPTICAL FIBER CONNECTOR - An optical fiber connector is disclosed. The optical fiber connector includes a housing, a coupler and an resilient member received in the housing. The coupler received in the housing and couples optical signals between optical fibers. The coupler includes a main portion and a flat positioning portion integrally connected to the main portion. The resilient member includes a first arm and a second arm forming a subtantially V-shaped profile, an inner surface of the resilient member is flat. The positioning portion is inserted between the V-shaped profile resilient member, and the distal end of the positioning portion is in contact to the resilient member. The resilient member is configured to apply a spring force on the coupler. | 04-28-2011 |
20110123155 | FIBRE COUPLER - A fiber coupler with an inner tube, an inner fiber arranged within the inner tube and several outer fibers arranged around the inner fiber, is disclosed, wherein said fiber coupler tapers in the longitudinal direction of the inner fiber from a main section to a terminal section and the inner cross section on the inner tube corresponds to the diameter of the inner fiber along the tapering section of the fiber coupler. | 05-26-2011 |
20110170825 | Waveguide Coupler Having Continuous Three-Dimensional Tapering - A solid state waveguide coupler is provided including a first coupler end disposed on a solid state material substrate for connection to a first solid state waveguide located on the substrate and a second coupler end disposed on the substrate for connection to a second waveguide located on the substrate. A coupling span, comprising a waveguide material layer on the substrate, is disposed between the first and second coupler ends and tapers between a height of the first waveguide and a height of the second waveguide, tapers between a width of the first waveguide and a width of the second waveguide, and includes curved sidewalls along at least a portion of the tapered coupling span. In a method for fabricating the waveguide coupler, material is isotropically removed from a waveguide material layer on the substrate to produce tapered surfaces between the first waveguide and the second waveguide. | 07-14-2011 |
20110182549 | SPOT-SIZE CONVERTER - A spot-size converter is equipped with a substrate, a clad that is formed on the substrate, a core that is embedded inside the clad, and an input/output end face. The core is tapered toward the input/output end face along a light propagation direction. In the clad, groove portions that expose a substrate face are formed extending as far as the input/output end face and on both sides of the core along the light propagation direction. | 07-28-2011 |
20110229081 | Apparatus and Method for Increasing the Effective Capture Area in Optical Terminals - At least two single-mode optical fibers are fused together such that their cores are separated by only a few microns to serve as a capture element of an incoming beam of light in an optical terminal. | 09-22-2011 |
20110280517 | TECHNIQUES AND DEVICES FOR LOW-LOSS, MODEFIELD MATCHED COUPLING TO A MULTICORE FIBER - Devices and techniques are described for connecting each of plurality of terminals to respective individual cores of a multicore fiber. Each of the plurality of terminals is provided with a respective length of a single-core fiber. The single-core fibers are configured to maintain modal properties that arc substantially the same, within a tolerance range, at the front and rear ends, as the single-core fiber is tapered. The single-core fibers are assembled together. The front end of the assembly is tapered to form a front cross-section in which the single-core fiber cores are arranged in a configuration matching that of the cores of the multicore fiber. | 11-17-2011 |
20110305418 | SINGLE-FIBER MACH-ZEHNDER FILTER AND METHOD OF MANUFACTURING THE SAME - The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer. | 12-15-2011 |
20120141069 | Waveguide Coupling Device with Properties of Forward and Backward Coupling as well as Manufacturing Method Thereof - The present invention relates to a waveguide coupling device with properties of forward coupling and backward coupling as well as a manufacturing method thereof, the waveguide coupling device comprises: a substrate, at least one inverted taper coupling structure, an intermediate layer, and at least one three-dimensional taper coupling structure. Wherein one end of the three-dimensional taper coupling structure is adopted for connecting to an external optical fiber, so as to couple the optical wave propagating in the optical fiber; Moreover, by way of the specific coupling sequence of (three-dimensional taper coupling structure)-(intermediate layer)-(inverted taper coupling structure), the optical wave may be efficiently coupled into, be confined in, and ultimately propagates in the inverted taper coupling structure connecting to waveguide devices. In addition, through the manufacturing method, the waveguide coupling device with properties of forward coupling and backward coupling can be massively fabricated by the present semiconductor process with low cost. | 06-07-2012 |
20120201496 | SYMMETRICAL BRANCHING ORTHO MODE TRANSDUCER (OMT) WITH ENHANCED BANDWIDTH - An Ortho Mode Transducer (OMT) comprising a main guide configured with a set of ports and at both ends for communicating a band of frequencies. The ports and are placed at a predetermined distance from each other to form a taper section. Branching waveguides are disposed around the main guide for extracting polarization signals from the main guide. Coupling apertures are disposed apart along the periphery of the main guide for coupling the branching waveguides to the main guide. The coupling apertures are aligned parallel to a longitudinal axis of the main guide and extended to the taper portion of the main guide, which enhances bandwidth performance without the need for additional extraneous impedance matching elements. | 08-09-2012 |
20120224813 | OPTICAL COUPLER BETWEEN PLANAR MULTIMODE WAVEGUIDES - Various exemplary embodiments relate to an optical waveguide coupler including: a first optical waveguide including a first area and a tapered area having a tapered width; a second optical waveguide including a first area and a tapered area having a tapered width; wherein the first area of the of the second optical waveguide overlaps the tapered area of the first optical wave guide, and wherein the tapered area of the second optical waveguide overlaps the first area of the first optical waveguide. | 09-06-2012 |
20120230635 | OPTICAL COUPLING DEVICE AND OPTICAL COUPLING-BRANCHING DEVICE - In an optical coupling device, a main waveguide have a linearly extending portion and a tapered portion formed on a first clad layer. The waveguide has a width which is gradually reduced towards an incident side of the light wave. Auxiliary waveguides are formed on the both sides of the main waveguide, wherein each of the auxiliary waveguides has first and second tapered portions having widths which are gradually reduced toward both sides. A second clad layer is so formed as to cover the main and auxiliary waveguides and first clad layer, wherein the first clad layer guides the light wave introduced into the first clad layer or the second clad layer and gradually converge the light wave towards the main waveguide. | 09-13-2012 |
20120301079 | Method and Device for Optically Coupling Optical Fibres - An optical assembly comprising ( | 11-29-2012 |
20130121641 | OPTICAL FIBER COUPLER ARRAY - An optical fiber coupler array capable of providing multiple low loss, high coupling coefficient interfaces between a predetermined number of low numerical aperture optical fibers and an optical waveguide device with at least a corresponding number of waveguide interfaces. The novel coupler array includes a plurality of coupler inner cores and a plurality of corresponding coupler outer cores, within a medium surrounding each outer core, and also includes a first end for interfacing with optical fibers and a second end for interfacing with a plurality of waveguide interfaces of an optical waveguide device. The sizes of the inner and outer cores are gradually reduced from the first end to the second end in accordance with at least one predetermined reduction profile, such that the coupler array comprises a plurality of low numerical aperture waveguides at the first end, and a plurality of high numerical aperture waveguides at the second end. | 05-16-2013 |
20130129282 | Methods, Systems, and Products for Image Displays - Methods, systems, and products illuminate display devices. An image is injected into a tapered portion of a waveguide. The tapered portion reflects the image to create total internal reflectance of the image within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image is displayed to a viewer. | 05-23-2013 |
20130170793 | OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE DEVICE - The present invention provides a small optical waveguide structure capable of converting the spot size of light, and capable of reducing the conversion loss when compared under the condition of the same waveguide length and performing an optical conversion with high efficiency. An optical waveguide structure ( | 07-04-2013 |
20130182999 | TAPERED OPTICAL FIBER FOR SUPERCONTINUUM GENERATION - The invention relates to a tapered optical fiber and a method and drawing tower for producing such an optical fiber. The tapered optical fiber comprising a core region that is capable of guiding light along a longitudinal axis of said optical fiber and a cladding region surrounding said core region. The optical fiber comprises a tapered section arranged between a first longitudinal position and a second longitudinal position, said tapered section comprising a first taper section having a first length, L | 07-18-2013 |
20130188911 | Coupling Arrangement for Non-Axial Transfer of Electromagnetic Radiation - A coupling arrangement according to the present invention comprises a target fiber, at least one feeding fiber and an intermediate fiber. The intermediate fiber comprises an input end and a converging taper portion, wherein the input end of the intermediate fiber is spliced to an output end of the feeding fiber in an axial way. Due to this coupling electromagnetic radiation being fed through the feeding fiber enters the intermediate fiber through its input end surface. The converging taper portion of the intermediate fiber is fused to the target fiber in the transfer region in a non-axial way. This leads to a non-axial coupling such that electromagnetic radiation, which entered the intermediate fiber through the input end surface thereof, is coupled into the target fiber. | 07-25-2013 |
20130216184 | CONFIGURABLE PITCH REDUCING OPTICAL FIBER ARRAY - The inventive optical fiber coupler array is capable of providing a low loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array is configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing. The novel optical coupler array includes a plurality of waveguides (at least one of which may optionally be polarization maintaining), that comprises at least one gradually reduced vanishing core fiber, at least in part embedded within a common housing structure. Alternatively, the novel coupler array may be configured for utilization with at least one of an optical fiber amplifier and an optical fiber laser. | 08-22-2013 |
20130230281 | METHOD OF FORMING FUSED COUPLER - A method of forming a coupler, the method comprising: (a) heating a portion of an optical fiber having multiple cores and an initial diameter; and (b) applying a tensile force across the portion such that the portion stretches, thereby reducing the initial diameter to a reduced diameter sufficient to cause optical signals propagating in one or more of the multiple cores to leave their respective cores and enter other cores of the fiber. | 09-05-2013 |
20130259425 | OPTICAL DEVICE - An optical device includes an optical waveguide including a core and a cladding, and includes a wide optical waveguide. An input optical waveguide is connected with one side the wide waveguide and output optical waveguides are connected to an opposite side of the wide waveguide. Center intervals between adjacent ones of the output waveguides meet either a condition 1 that the center intervals are wider than or equal to | 10-03-2013 |
20130266263 | SPOT SIZE CONVERTERS AND METHODS OF MANUFACTURING THE SAME - Provided are a spot size converter and a method of manufacturing the spot size converter. The method includes stacking a lower clad layer, a core layer, and a first upper clad layer on a substrate, tapering the first upper clad layer and the core layer in a first direction on a side of the substrate, forming a waveguide layer on the first upper clad layer and the lower clad layer, and etching the waveguide layer, the first upper clad layer, the core layer, and the lower clad layer such that the waveguide layer is wider than a tapered portion of the core layer on the side of the substrate and has the same width as that of the core layer on another side of the substrate. | 10-10-2013 |
20130301991 | CONFIGURABLE PITCH REDUCING OPTICAL FIBER ARRAY - The inventive optical fiber coupler array is capable of providing a low loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array is configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing. The novel optical coupler array includes a plurality of waveguides (at least one of which may optionally be polarization maintaining), that comprises at least one gradually reduced vanishing core fiber, at least in part embedded within a common housing structure. Alternatively, the novel coupler array may be configured for utilization with at least one of an optical fiber amplifier and an optical fiber laser. | 11-14-2013 |
20130315536 | OPTICAL PRINTED CIRCUIT BOARD WITH TWO LIGHT WAVEGUIDE LAYERS OPTCALLY COUPLED TO EACH OTHER - An optical PCB includes a substrate layer, a first light waveguide layer and a second light waveguide layer. The first light waveguide layer and the second light waveguide layer are positioned on the substrate layer and are optically coupled with each other. The first light waveguide layer includes a first tapered end facing toward the second light waveguide layer, and the second light waveguide layer includes a second taped end facing toward the first light waveguide layer. The first light waveguide layer and the second light waveguide layer are optically coupled with each other via the first tapered end and the second tapered end. | 11-28-2013 |
20130330042 | OPTICAL BRANCHING ELEMENT AND OPTICAL BRANCHING CIRCUIT - An optical branching element includes: an input waveguide; a tapered waveguide connected to the input waveguide; two branched waveguides that are connected to the tapered waveguide and arranged so as to form a Y-shape with the input waveguide and the tapered waveguide; and a plurality of strip-like waveguides that are provided so as to connect between the two branched waveguides and not to protrude outside the two branched waveguides, and formed so as to decrease in width as becoming distant from the tapered waveguide. | 12-12-2013 |
20140093205 | Step-Index Few-Mode Fiber Designs For Spatial Multiplexing - A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to, or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween. | 04-03-2014 |
20140119693 | DIAMOND OPTICAL COMPONENT FOR AN OPTICAL TOOL - A component for an optical probe, the component comprising: a tubular body defining an internal channel and an opening; a mounting ring which is mounted within the internal channel and configured to define an aperture aligned with the opening; and a window disposed across the aperture and bonded to the mounting ring around the aperture, wherein the window is diamond, wherein the mounting ring comprises a material having a coefficient of linear thermal expansion a of 14×10 | 05-01-2014 |
20140119694 | Techniques and Devices for Low-Loss Coupling to a Multicore Fiber - An optical pedestal fiber is configured to be taperable to form a tapered fiber having a mode field diameter at the tapered end that differs from the mode field diameter at the untapered end in correspondence with the difference between the cladding diameter at the tapered end and the cladding diameter at the untapered end. A plurality of such pedestal fibers can be used to construct a tapered fiber bundle coupler that provides matching of both core pitch and mode field diameter between a plurality of input fibers and individual cores of a multicore fiber. Further, the tapered fiber bundle coupler can be constructed using a plurality of fibers, in which individual fibers are configured to have different effective refractive indices, thereby suppressing crosstalk therebetween. | 05-01-2014 |
20140270644 | RING COMBINER - A waveguide comprises an annular cross-section and a first numerical aperture (NA) at one end. The waveguide further comprises either an annular or circular cross-section at the other end, which has a second NA. The waveguide has a progressively-varying NA, which varies from the first NA (at one end) to the second NA (at the other end). | 09-18-2014 |
20140301699 | Methods and Devices for Facilitating Visualization In a Surgical Environment - Devices and methods for visually confirming the positioning of a distal end portion of an illuminating device placed within a patient include inserting a distal end portion of an illuminating device internally into a patient, emitting light from the distal end portion of the illuminating device, observing transillumination resulting from the light emitted from the distal end portion of the illuminating device that occurs on an external surface of the patient, and correlating the location of the observed transillumination on the external surface of the patient with an internal location of the patient that underlies the location of observed transillumination, to confirm positioning of the distal end portion of the illuminating device. | 10-09-2014 |
20140314375 | CAPILLARY WALL COUPLED WHISPERING GALLERY MODE MICRORESONATOR - A microresonator structure comprises a waveguide and a microsphere. The waveguide is of elongated cylindrical shape and includes a first section of optical transmission material and a cavity section axially aligned with the first section. The cavity section includes a first cavity and a second cavity. The first cavity is adjacent to the first section and includes a first sidewall of optical transmission material with an inner surface that tapers inward to an apex positioned adjacent to the first section. The second cavity is positioned adjacent to the first cavity of hollow cylindrical shape and includes a circumferential second sidewall of optical transmission material that abuts the first sidewall. The microsphere has a spherical outer surface and is positioned within the cavity section such that the outer surface contacts a portion of the first sidewall and a portion of the second sidewall. | 10-23-2014 |
20150055916 | OPTICAL COMBINER AND LASER DEVICE USING THE SAME - An optical combiner includes a plurality of input optical fibers, an output optical fiber, and a bridge fiber optically coupled to the plurality of input optical fibers and the output optical fiber. The bridge fiber includes a tapered portion whose outer diameter is reduced toward the emission end, and the outer diameter of the emission end face of the bridge fiber is smaller than the cladding outer diameter of the incident end face of the output optical fiber. | 02-26-2015 |
20150117818 | SPOT SIZE CONVERTER AND OPTICAL APPARATUS - A spot size converter includes a first silicon waveguide core that includes a width-fixed region having a fixed width and a width-tapered region continuing to the width-fixed region and having a width reducing toward a terminal portion, and a second waveguide core continuing to the first silicon waveguide core and covering at least the width-tapered region. The first silicon waveguide core has a thickness-wise step in the width-fixed region. | 04-30-2015 |
20150131943 | TAPERED OPTICAL FIBER, MANUFACTURING METHOD THEREOF AND MANUFACTURING SYSTEM THEREOF - To provide a tapered optical fiber having a good outer diameter accuracy and a high reproducibility, a manufacturing method of the tapered optical fiber, and a manufacturing system of the tapered optical fiber. The above-mentioned problem is solved by manufacturing system | 05-14-2015 |
20150139587 | FIBER COUPLER - A fibre coupler is provided, which includes a tubular enveloping structure and several optical fibres arranged in the enveloping structure, each of which has a fibre core and a fibre cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fibre core to the diameter of the fibre cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fibre to the diameter of the fibre core, increases in the first direction for each optical fibre. | 05-21-2015 |
20150301275 | NANO-SCALE CONTINUOUS RESONANCE TRAP REFRACTOR BASED SPLITTER, COMBINER, AND REFLECTOR - A tapered core waveguide which may be configured as a spectral component splitter, a spectral component combiner, and various combinations thereof including a reflective mode of operation. The tapered core waveguide has an aperture and cladding, and is dimensioned such that radiant energy admitted into the core via the aperture and having at least two spectral components would be emitted via the cladding at a location dependent on its frequency and/or its polarization, and that a plurality of spectral components injected to the core via the cladding will be mixed and emitted via the aperture. | 10-22-2015 |
20150378105 | ASYMMETRIC OPTICAL FIBER COUPLER - There is described an optical fiber coupler in which at least one fiber is a multiple-clad fiber, containing a single-mode core supporting a single guiding mode and an inner multi-mode cladding guiding multiple modes. The multiple-clad fiber is fused with a second fiber of a different etendue to create an optical fiber coupler having an enhanced multi-mode signal transmission. | 12-31-2015 |
20160085026 | SPOT-SIZE CONVERSION OPTICAL WAVEGUIDE - A spot-size-converting optical waveguide includes a core portion. A first core portion of the core portion has a first straight portion and a first tapered portion. The first straight portion extends in a direction, having width and height that are approximately constant in the direction, and the first tapered portion is continuous with the first straight portion and decreases in width and height toward a termination portion. A second core portion of the core portion has a straight-portion-coating portion, a tapered-portion-coating portion, and a second tapered portion, the straight-portion-coating portion covers the first straight portion, the tapered-portion-coating portion covers the first tapered portion continuously with the straight-portion-coating portion and decreases in width and height along the first tapered portion's shape, and the second tapered portion increases in width and height toward the direction. A refractive index of the second core portion is lower than that of the first core portion. | 03-24-2016 |
20160139334 | INTERLAYER LIGHT WAVE COUPLING DEVICE - An interlayer light wave coupling device includes a substrate; a first core disposed on the substrate and having a first acute structure; a third core spatially set apart from the first core and having a second acute structure; and a second core disposed between the first core and the third core and having a smaller index of refraction than the first core and the third core. The acute structures of the first core and the third core are disposed so as to have no overlap as viewed from above. | 05-19-2016 |
20160147020 | OPTICAL SUBASSEMBLY, OPTICAL SYSTEM AND METHOD - An optical subassembly ( | 05-26-2016 |
20190146153 | OPTICAL COUPLING DEVICE AND METHOD FOR MANUFACTURING THE SAME | 05-16-2019 |
20190146157 | OPTICAL DEVICE, LASER SYSTEM, AND METHOD FOR MANUFACTURING OPTICAL DEVICE | 05-16-2019 |