Class / Patent application number | Description | Number of patent applications / Date published |
359484010 | Polarization using a time invariant electric, magnetic, or electromagnetic field (e.g. electro-optical, magneto-optical) | 57 |
20130038932 | Plasmonic Plate for Generating Optical Vortices - A plasmonic plate for generating optical vortices, formed by electrically conducting material and defining a plurality of slots that convert a first electromagnetic field having a non-null spin angular momentum into a second electromagnetic field having a non-null orbital angular momentum. | 02-14-2013 |
20130128356 | Metallic Structure and Opto-Electronic Apparatus - A metallic structure and an opto-electronic apparatus are provided. The metallic structure is used for filtering or polarizing an electromagnetic wave, and includes a light-permissible medium, a first metallic block and a second metallic block. The first and second metallic blocks are parallel to and spaced from each other at a predetermined distance (d), and are disposed inside or over the light-permissible medium. After passing through the metallic structure, the electromagnetic wave has a distribution curve of transmittance versus wavelength, wherein the distribution curve has at least one transmittance peak value corresponding to at least one wavelength in a one-to-one manner. The aforementioned predetermined distance (d) and an averaged width of the first metallic block satisfy the following relationships: d<λ; 0.01λ05-23-2013 | |
20140268328 | Polarization Grating Stack - A stack of polarization gratings each having a grating pitch, the stack having a first end and a second end and, the polarization grating stack including N stages wherein one or more of the N stages in the stack comprise a first set of gratings which direct an incident beam through angles lying substantially in a first plane and one or more of the N stages in the stack comprise a second set of gratings which direct an incident beam through angles lying substantially in a second, different, plane lying at an angle relative to the first plane and wherein each of the N stages provide one of a plurality of deflection angles and wherein the N stages are arranged such that a stage having the smallest deflection angle is nearest the first end of the stack and a stage having the largest deflection angle is nearest the second end of the stack and wherein the deflection angles of the gratings in each set are chosen such that the grating pitch of each grating is at least one of: substantially twice the grating pitch of another member of the set; or substantially one-half the grating pitch of another member of the set. | 09-18-2014 |
20160109730 | Electrically Controlled Optical Elements and Method - The effective focal length of an optical system can be electronically controlled using switchable wave plates in conjunction with polarized light. | 04-21-2016 |
20160139461 | DISPLAY APPARATUS - A display apparatus comprises a display panel and a reflection member. The display panel comprises an array of pixels, the array having a quadrangular shape. The reflection member is disposed in a position not to overlap at least a portion of the array when viewed in a normal direction substantially perpendicular to a major surface of the display panel, the reflection member being configured to reflect light that is emitted from the display panel in a direction slanted with respect to the normal direction. The combination of light emitted from the display panel in the normal direction and the reflected light is configured to form an image having a shape other than a quadrangular shape. | 05-19-2016 |
20160170113 | MULTILAYER OPTICAL FILMS HAVING SIDE-BY-SIDE POLARIZER/POLARIZER ZONES | 06-16-2016 |
20160195724 | COLLIMATING OPTICAL DEVICE AND SYSTEM | 07-07-2016 |
20160377782 | BIREFRINGENT METHODS TO CREATE OPTICAL EFFECTS FOR PHOTOGRAPHY AND VIDEOGRAPHY - The present invention provides a method of using a birefringent assembly to produce optical effects for use in photography and videography comprising: providing the birefringent assembly comprising a housing, at least one birefringent optical element and at least one polarizing optical element wherein the at least one birefringent optical element and the at least one polarizing optical element are contained within the housing; attaching the birefringent assembly to a camera lens attached to a camera; and capturing an image containing desired optical effects using the camera and the birefringent assembly. The present invention also provides the birefringent assembly discussed herein. | 12-29-2016 |
20180024387 | Waveplate lenses and methods for their fabrication | 01-25-2018 |
359484020 | Faraday effect | 48 |
20110134523 | DUAL PULSED LIGHT GENERATION APPARATUS AND METHOD FOR DUAL PULSED LIGHTS GENERATION THEREOF - A dual pulsed light generation apparatus including a polarization beam splitter (PBS), a first polarization reflector, and a second polarization reflector is provided. The PBS has a first plane, a second plane, and a dividing interface located between the first plane and the second plane. The PBS is located in the transmission path of an incident pulsed light and used for dividing the incident pulsed light into a first polarization pulsed light reflected by the dividing interface and a second polarization pulsed light passing through the dividing interface. The first polarization reflector is disposed opposite to the first plane and transforms the first polarization pulsed light into a third polarization pulsed light passing through the dividing interface. The first polarization reflector is disposed opposite to the second plane. | 06-09-2011 |
20150146291 | Faraday Rotator Mirror - Methods, systems, and apparatus for optical communications. One of the apparatuses comprises a birefringent crystal configured to separate an incoming light beam input at a first port into component light beams having orthogonal polarization directions and directing the component light beams on respective paths to exit locations on the birefringent crystal; and a Faraday rotator positioned between the birefringent crystal and a beam folding optic assembly, wherein the Faraday rotator is positioned such that light beams exiting the birefringent crystal along a first path from a first exit location pass through the Faraday rotator before being incident on the beam folding optic assembly and that light beams exiting the birefringent crystal along a second path from a second exit location pass directly to the beam folding optic assembly without being incident on the Faraday rotator. | 05-28-2015 |
20150370096 | Optical Assembly For 90.degree. Polarization Rotation - Embodiments of an optical assembly for use in polarization rotation applications are disclosed. In one aspect, an optical assembly includes a polarization beam splitter a rotational element and a path exchange mirror. The temperature, wavelength and manufacturing dependencies of polarization rotation of this optical assembly are minimal to nonexistent compared to conventional Faraday rotation assemblies as the optical fiber accepts only the desired rotation. As such these optical assemblies have no temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges with minimal additional losses. | 12-24-2015 |
20150370097 | Optical Assembly For 90.degree. Polarization Rotation - Embodiments of an optical assembly for use in polarization rotation applications are disclosed. In one aspect, an optical assembly includes a polarization beam splitter a rotational element and a path exchange mirror. The temperature, wavelength and manufacturing dependencies of polarization rotation of this optical assembly are minimal to nonexistent compared to conventional Faraday rotation assemblies as the optical fiber accepts only the desired rotation. As such these optical assemblies have no temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges with minimal additional losses. In another aspect, the polarization dependence of reflection from the path exchange mirror is managed so as to minimize the polarization effect associated with oblique incidence. | 12-24-2015 |
20160202506 | OPTICAL DEVICE | 07-14-2016 |
359484030 | Isolator | 34 |
20110181950 | OPTICAL ISOLATOR - An optical isolator including a Faraday rotator that has a high Faraday effect and a high transmission factor in a wavelength used is provided. An optical isolator comprises at least: a Faraday rotator; a polarizer arranged on a light incidence side of the Faraday rotator; and an analyzer arranged on a light exit side of the Faraday rotator, wherein the Faraday rotator consists of an oxide that contains an ytterbium oxide (Yb | 07-28-2011 |
20110255161 | POLARIZING GLASS AND OPTICAL ISOLATOR - The near-field extinction ratio of a polarizing glass is increased. A polarizing glass contains anisotropically shaped metal particles oriented and dispersed in a glass substrate, which contains 0.40-0.85 wt % Cl relative to the entire glass substrate. The Vickers hardness ranges from 360 to 420, the Knoop hardness number ranges from 400 to 495, or the glass substrate contains at least one component selected from the group consisting of Y | 10-20-2011 |
20110261454 | All-Fiber Optical Isolator - An all-fiber Faraday rotator including a plurality of optical fibers doped, at unusually high concentrations of at least several tens of percent, with rare-earth oxides, an all-optical-fiber optical isolator employing a polarization-maintaining fiber-optic splitter, and a method of optically-isolating a laser source from unwanted feedback with such an optical isolator. In a case where the doping concentration exceeds 55 weight-%, the length of the Faraday rotator achieving a 45-degree rotation of the polarization vector of light guided by an optical fiber does not exceed approximately 10 cm. | 10-27-2011 |
20120002280 | OPTICAL ELEMENT, POLARIZATION FILTER, OPTICAL ISOLATOR, AND OPTICAL APPARATUS - An optical element transmits incident light having a particular polarization direction mainly by 0-order transmission and diffracts incident light having a perpendicular polarization direction. The optical element includes a periodic structure having a period equal to or greater than the wavelength of the incident light. The periodic structure includes first and second subwavelength concave-convex structures formed perpendicularly adjacent to each other in each period of the periodic structure. The first and the second subwavelength concave-convex structures have a period less than the wavelength of the incident light. A filling factor and a groove depth of the first and the second subwavelength concave-convex structures are determined such that they have the same effective refraction index with respect to the incident light having the particular polarization direction and a phase difference π with respect to the incident light having the particular polarization direction. | 01-05-2012 |
20120062992 | MAGNETIC CIRCUIT FOR FARADAY ROTATOR AND METHOD OF MANUFACTURING MAGNETIC CIRCUIT FOR FARADAY ROTATOR - A magnetic circuit for a Faraday rotator capable of suppressing generation of irreversible demagnetization is provided. This magnetic circuit ( | 03-15-2012 |
20120134021 | Optical Isolator Element and Optical Module Using the Same - An optical isolator | 05-31-2012 |
20120182614 | POLARIZING GLASS AND OPTICAL ISOLATOR - The near-field extinction ratio of a polarizing glass is increased. A polarizing glass contains anisotropically shaped metal particles oriented and dispersed in a glass substrate, which contains 0.40-0.85 wt % Cl relative to the entire glass substrate. The Vickers hardness ranges from 360 to 420, the Knoop hardness number ranges from 400 to 495, or the glass substrate contains at least one component selected from the group consisting of Y | 07-19-2012 |
20120194906 | Optical insulator with parallelepiped magnets - The present invention relates to an optical insulator for high power optical radiation. The arrangement of the optical insulator comprises a Faraday rotator, comprising one or more Faraday media ( | 08-02-2012 |
20120200920 | SINGLE CRYSTAL, PRODUCTION PROCESS OF SAME, OPTICAL ISOLATOR, AND OPTICAL PROCESSOR USING SAME - The present invention provides a single crystal for an optical isolator having a Faraday rotation angle exceeding that of TGG single crystal in a wavelength region of 1064 nm or longer or in a wavelength region of shorter than 1064 nm, and is capable of realizing enlargement of crystal size, a production process thereof, an optical isolator, and an optical processor that uses the optical isolator. The single crystal according to the present invention is composed of a terbium aluminum garnet single crystal, and mainly a portion of the aluminum is replaced with lutetium. | 08-09-2012 |
20120206802 | An Opto-Isolator And A Laser Processing Apparatus Using The Same - An opto-isolator including a Faraday rotator comprised of a crystal cylinder formed into a cylinder using a crystal that rotates polarized light; an enclosing tube surrounding the crystal cylinder; two cooling tubes each sized and positioned to allow both ends of the outer peripheral surface of the crystal cylinder to be inscribed within the cooling tubes and both end sections of an inner peripheral surface of the enclosing tube to be circumscribed around the cooling tubes; passages formed within the cooling tubes; a cooling medium circulating through a space formed among the crystal cylinder, the enclosing tube, and the two cooling tubes, and the passages; and a magnet disposed in an outer periphery of the enclosing tube. The opto-isolator further includes two polarizers respectively disposed on the optical path of light entering the Faraday rotator and an optical path of the light exiting the Faraday rotator. | 08-16-2012 |
20120236409 | OPTICAL MODULE - An optical module is provided that includes a Faraday rotator having a Verdet constant at a wavelength of 1.06 μm of at least 0.27 min/(Oe·cm), a first hollow magnet disposed on the outer periphery of the Faraday rotator, and second and third hollow magnet units disposed so as to sandwich the first hollow magnet on the optical axis. The second and third hollow magnet units include 2 or more magnets equally divided in a direction of 90 degrees relative to the optical axis. A magnetic flux density B (Oe) applied to the Faraday rotator is in the range of 0.5×10 | 09-20-2012 |
20130050824 | POLARIZATION INDEPENDENT OPTICAL ISOLATOR - Provided is a polarization independent optical isolator including: wedge-shaped birefringent crystal plates each made of a LiNbO | 02-28-2013 |
20130114138 | Optical Isolator, Shutter, Variable Optical Attenuator and Modulator Device And Method - An integrated optical device functioning as optical isolator, shutter, variable optical attenuator, and modulator is disclosed. The device employs a Pockels cell for dynamically rotating with nanosecond speed the polarization state of incident light for attenuation and modulation. The invention provides a compact, high performance and reliable device without moving parts for use in laser systems and particularly in fiber optic telecommunication system. | 05-09-2013 |
20130135724 | GARNET-TYPE SINGLE CRYSTAL, OPTICAL ISOLATOR AND LASER PROCESSING MACHINE - The present invention is a garnet-type single crystal represented by the following general formula: | 05-30-2013 |
20130222908 | OPTICALLY ISOLATED TO-CAN - An optically isolated TO-can including a header with electrical connections, a laser diode mounted on the header, and a lens cap positioned over the laser diode so as to enclose and hermetically seal the laser diode. The optically isolated TO-can includes an optical isolator positioned in the TO-can adjacent the laser diode and in the light path of light generated by the laser diode. | 08-29-2013 |
20130222909 | MAGNETO-OPTICAL MATERIAL, FARADAY ROTATOR, AND OPTICAL ISOLATOR - It is an object of the present invention to provide a magneto-optical material containing as a main component an oxide that includes a terbium oxide and having a large Verdet constant at a wavelength in the 1.06 μm region (0.9 to 1.1 μm) and high transparency, and to provide a small-sized optical isolator suitably used in a fiber laser for a processing machine. | 08-29-2013 |
20130258468 | OPTICAL TRANSMITTER, OPTICAL MODULE, AND OPTICAL CONNECTOR - An optical transmitter includes an optical isolator that includes a Faraday rotator transmitting light output from a light source, and has a first state in which the light is transmitted through the optical isolator when a first magnetic field is applied to the Faraday rotator, and a second state in which the amount of the light transmitted through the optical isolator is less than that in the first state when a second magnetic field different from the first magnetic field is applied to the Faraday rotator; a junction to which an optical transmission medium into which the light output from the optical isolator is input is connected; a magnetic-field generator that selectively applies the first magnetic field or the second magnetic field to the Faraday rotator; and a switching unit that switches the magnetic-field generator to the second state when the optical transmission medium is not connected to the junction. | 10-03-2013 |
20130308187 | FARADAY ROTOR, OPTICAL ISOLATOR AND OPTICAL PROCESSING EQUIPMENT - The object(s) of the invention is to provide a Faraday rotator, an optical isolator, and optical processing equipment, which has a transmittance higher than that of TGG, is capable of upsizing, and has a higher performance index in the visible wavelength region in general, and on wavelengths of up to 400 nm in particular. | 11-21-2013 |
20140002900 | TRANSPARENT CERAMIC, METHOD FOR MANUFACTURING SAME, AND MAGNETO-OPTICAL DEVICE | 01-02-2014 |
20140146389 | Optical Isolator Capable of Creating a Large Buffer Area for Optical Beams and Methods of Manufacturing and Using the Same - An optical isolator capable of creating a larger safe buffer area for optical beam(s) and a manufacturing method thereof are disclosed. The optical isolator includes a sandwich type wafer, a first polarizer, a Faraday rotator and a second polarizer. The first polarizer works as the incident plane of the FSI (free space isolator), while the second polarizer works as the outgoing plane of the FSI. The direction in which the second polarizer passes the polarized beam is at a 45° angle with respect to the first polarizer. The manufacturing method includes marking the edge of the second polarizer. FSIs processed by this method provide a larger buffer area for the optical beam(s) and/or a lower manufacturing cost, even though the size of the FSI is unchanged. | 05-29-2014 |
20140160565 | LOW FOCAL SHIFT KW CLASS OPTICAL ISOLATOR - A kW Class optical isolator employs negative feedback to yield low focal shift over dynamically changing power levels. The isolator is useful as a kW fiber laser output isolator. | 06-12-2014 |
20140300962 | COLLIMATOR AND OPTICAL ISOLATOR WITH COLLIMATOR - An optical isolator with a collimator which is used at the tip end of a laser beam transmitting fiber utilized in a laser processing. The optical isolator can provide solutions to the problems how to make return lights to be isolated from an incident light path and how to prevent the light energy from being conducted to an incident fiber, a laser oscillator, the collimator, and the optical isolator. The solutions comprise light-receiving fibers ( | 10-09-2014 |
20140300963 | Optical Isolator - It is an object to provide a small-sized optical isolator that is suitable as an optical isolator used in a semiconductor laser used in applications such as medical treatment or optical measurement | 10-09-2014 |
20150009562 | OPTICAL MATERIAL AND MANUFACTURING METHOD THEREOF, AND LIGHT-EMITTING DEVICE, OPTICAL ISOLATOR, AND OPTICAL PROCESSING APPARATUS USING THE OPTICAL MATERIAL - An optical material used in a UV-excited yellow light-emitting material and an optical isolator, capable of emitting yellow light stably and highly efficiently even if a large current is fed to obtain the high luminance emission. The optical material used for the UV-excited yellow light-emitting material ( | 01-08-2015 |
20150015947 | OPTICAL ISOLATOR - An optical isolator for use with a wavelength band of 600-800 nm is improved in that it has a Faraday rotator made of an oxide material in which said oxide material contains (Tb | 01-15-2015 |
20150098127 | OPTICAL MODULE OUTPUTTING POLARIZATION COMBINED OPTICAL BEAM - A transmitter optical module for emitting a polarization combined beam is disclosed. The transmitter optical module includes optical sources each emitting optical beams with polarizations substantially same with others, an optical isolator, and a polarization beam combiner (PBC). The optical isolator, by receiving the optical beams, outputs the optical beams with polarizations perpendicular to the other to the PBC. | 04-09-2015 |
20150131149 | TRANSLUCENT SINTERED BODY, A FARADAY ROTATOR MADE OF THIS SINTERED BODY, AND AN OPTICAL ISOLATOR - A translucent sintered body having the following basic composition: | 05-14-2015 |
20160054598 | FARADAY ROTATOR AND OPTICAL ISOLATOR BASED ON THIS FARADAY ROTATOR - To provide a faraday rotator using a TGG ceramic sintered compact and a light isolator using the faraday rotator such that the influence of scattered light can be relatively reduced and overall characteristics degradation for the entire light isolator is minimized so that a high extinction ratio of at least 38 dB or greater is achieved. | 02-25-2016 |
20160109735 | POLARIZATION INDEPENDENT OPTICAL ISOLATOR - [Object] To provide a polarization independent optical isolator enabling downsizing of a Faraday element and a magnet. [Solving means] The polarization independent optical isolator comprises: a pair of wedge-shaped birefringent crystal plates ( | 04-21-2016 |
20160195737 | FARADAY ROTATOR | 07-07-2016 |
359484040 | With reflector | 4 |
20130314784 | GRATING-BASED POLARIZERS AND OPTICAL ISOLATORS - Optical polarizers and optical isolators and systems that incorporate the optical polarizers and isolators are disclosed. In one aspect, an optical isolator includes a Faraday crystal with a first surface and a second surface opposite the first surface, a first one-dimensional sub-wavelength grating disposed on the first surface, and a second one-dimensional sub-wavelength grating disposed on the second surface. The isolator is to receive a first input beam of light on the first grating and output a polarized first output beam of light through the second grating approximately parallel to the first input beam. The isolator is to also receive a second input beam of light on the second grating and output a polarized second output beam of light through the first grating with the second output beam offset from the second input beam. | 11-28-2013 |
20140218795 | POWER SCALABLE MULTI-PASS FARADAY ROTATOR - Transparent heat-conductive layers of significant thickness are bonded or adhered to opposing optical faces of a Faraday optic to form a Faraday optic structure that can be used with beam-folding mirrors and an external magnetic field to form a multi-pass Faraday rotator with minimal thermal gradient across the beam within the Faraday optic. The transparent heat conductive layers conduct heat through the Faraday optic substantially parallel to the beam propagation axis for each pass through the Faraday optic structure and thereby reduce thermal gradients across the beam cross section that would otherwise contribute to thermal lens focal shifts and thermal birefringence in the Faraday optic structure. The multi-pass Faraday rotator of this invention is suitable for use with any device based upon the Faraday effect such as optical isolators, optical circulators and Faraday mirrors that are scalable with beam size to power levels in excess of 2 kW. | 08-07-2014 |
20150124318 | HIGH MAGNETIC FIELD-TYPE MULTI-PASS FARADAY ROTATOR - A multi-pass-type Faraday rotator useful in an optical isolator is provisioned with high-efficiency, high-field permanent magnets formed with minimal magnetic material. A high magnetic field is generated by two sets of magnets attached to outer pole plates that are mirror images of each other. Like-type poles of the magnets in each set are disposed against each other above and below the beam path plane of a multi-pass Faraday optic. Each set of magnets is formed of a central block of magnetic material with magnetization oriented substantially parallel to the multi-pass beam path on the Faraday optic, adjoined by adjacent blocks of magnetic material with magnetization oriented substantially perpendicular to the central magnet block and with like poles to the central magnet block where the magnets border the multi-pass Faraday optic. | 05-07-2015 |
20150378186 | COMBINED SPLITTER, ISOLATOR AND SPOT-SIZE CONVERTER - An integrated and compact multifunctional optical isolator (i.e., a combined splitter, isolator, and spot-size converter), which is suitable for use in a TOSA, includes input optics including a first polarizer, a Faraday rotator, and a second polarizer. The input optics include a wedge having a partially reflective coating disposed on a first face thereof. The input beam is incident on the first face at a non-normal angle of incidence such light passing through the wedge is refracted to a second face of the wedge, which is tilted relative to the first face by a predetermined wedge angle. At least one of the non-normal angle of incidence and the predetermined wedge angle is determined dependence upon a refractive index of the wedge material and a target anamorphic magnification of the input beam of light. | 12-31-2015 |
359484050 | Circulator | 3 |
20110181951 | Composite Reciprocal Rotators and Thermally Compensated Optical Isolators and Circulators Therefrom - A thermally compensated optical device includes in an optical path an input linear polarizer for transmitting linearly polarized light from a received light beam at a design wavelength. A composite reciprocal rotator includes a first reciprocal material and at least a second reciprocal material provides a reciprocal rotation having a temperature coefficient for reciprocal rotation (tempco | 07-28-2011 |
20120134022 | ADD AND DROP CIRCULATOR - In accordance with one embodiment of the present disclosure, an optical signal bidirectional transmission system comprises a bi-directional port configured to receive and output optical beams, an input port configured to receive beams and an output port configured to output beams, and only one birefringent crystal. A first beam manipulation system configured to adjust polarization of the beams, and direct the beams from the bi-directional port to the birefringent crystal. A second beam manipulation system configured to adjust polarization of the beams, and direct the beams from the input port to the birefringent crystal. The birefringent crystal is configured to direct the beams received from the first beam manipulation system such that the beams may exit the second beam manipulation system through the output port and direct the beams received from the second beam manipulation system such that the beams may exit the first beam manipulation system through the bi-directional port. | 05-31-2012 |
20160047987 | OPTICAL CIRCULATORS INTEGRATED INTO TRANSCEIVERS - An optical circulator integrated into a transceiver for bi-directional communication may include a core configured to pass a transmission signal in a transmit direction and a received signal in a receive direction. The optical circulator may include an input port optically coupled to the core. The input port may be configured to deliver the transmission signal to the core. The optical circulator may include an output port optically coupled to the core. The output port may be configured to receive the received signal from the core. The optical circulator may additionally include a network port optically coupled to the core. The network port may be configured to receive the transmission signal from the core and deliver the transmission signal to a fiber optic cable. The network port may be configured to receive the received signal from the fiber optic cable and deliver the received signal to the core. | 02-18-2016 |
359484060 | Optical switch | 2 |
20140139917 | MAGNETO-OPTIC SWITCH - Systems, methods, and apparatus for optical switching. In some implementations, a magneto-optic switch includes multiple optical components positioned in order along a light path including: a single optical fiber collimator, a first pair of refraction crystals, a first half wave plate assembly, refraction components, a second half wave plate assembly, a second pair of refraction crystals, and a dual fiber optic collimator, wherein a first side of the refraction components near the first half wave plate assembly includes a first Faraday effect element, a second side of the refraction components near the second half wave plate assembly includes an optic rotation assembly, the optic rotation assembly having a magnetic field generating component outside the first Faraday effect element. | 05-22-2014 |
20140139918 | MAGNETO-OPTIC SWITCH - Systems, methods, and apparatus for optical switching. In some implementations, a magneto-optic switch includes multiple optical components positioned in order along a light path including: a single fiber optical collimator, a first birefringent optic crystal, a first half wave plate assembly, a polarization rotation assembly, a second half wave plate assembly, a second birefringent optic crystal, and a dual fiber optic collimator, wherein a first side of the polarization rotation assembly near the first half wave plate assembly includes a first Faraday rotator element, a second side of the polarization rotation assembly near the second half wave plate assembly includes an optic rotation component, the polarization rotation assembly having a magnetic field generating component outside the first Faraday rotator element. | 05-22-2014 |
359484080 | Attenuator | 1 |
20130308188 | VARIABLE OPTICAL ATTENUATOR - A variable optical attenuator in which a polarization beam splitter splits a beam incoming from the front into two linearly-polarized beams perpendicular to each other and separately outputs them to the back along first and second light paths. A Faraday rotator rotates a polarization plane of the two incoming linearly-polarized beams to an arbitrary angle by controlling a magnetic field to be applied to a Faraday element by a magnetism applying means and outputs them to the back. First and second analyzers arranged in the first and the second light paths and parallelly arranged perpendicular to these light paths are arranged in that order. The two analyzers have optical axes perpendicular to each other so that the optical axes are in the same direction as that of the polarization plane of the two linearly-polarized beams output from the polarization beam splitter. | 11-21-2013 |
359484090 | Interference or comb filter | 1 |
20150124319 | Dual Resonance Pumped Two-Photon Absorption Optical Filter - An apparatus is disclosed for filtering of probe light. The apparatus includes an optical filter comprised of a medium circular birefringence between crossed polarizers. The circular birefringent medium changes the polarization of light of a particular frequency bandwidth. So that after passing through the first polarizer, the polarization of a particular frequency bandwidth probe light is rotated between crossed polarizers so it will be transmitted through the second polarizer. The birefringent medium is constructed from a gaseous substance such as atomic vapor and two pump lasers in resonance with absorption lines of the absorbing substance by the process of two-photon absorption. A magnetic field is utilized in some embodiments that permeates the absorbing substance and separates absorption lines for excited state transitions by the Zeeman effect. | 05-07-2015 |
359484100 | With particular Faraday effect material | 2 |
20120243088 | GAS CELL, GAS CELL MANUFACTURING APPARATUS, AND GAS CELL MANUFACTURING METHOD - A manufacturer of gas cells performs an arrangement process of arranging solid substances at positions corresponding to holes each of which is provided on each of a plurality of cells. Then, the manufacturer of the gas cells performs an accommodation process of accommodating gas in inner spaces of the cells through an air flow path connected to the holes. Further, the manufacturer of the gas cells performs a sealing process of sealing the spaces by melting the solid substances to close the holes corresponding to the solid substances. | 09-27-2012 |
20160048039 | CRYSTAL BODY, OPTICAL DEVICE HAVING THE SAME, AND METHOD OF MANUFACTURING CRYSTAL BODY - The present invention is a crystal body configured with a crystal and having a pair of light passing surfaces which face each other and pass light and at least one side surface which connects the pair of the light passing surfaces. In the crystal body according to the present invention, a ratio B/A of a dislocation density A (number/cm | 02-18-2016 |