Patent application number | Description | Published |
20100158429 | RESONANT OPTICAL MODULATORS - Disclosed are optical modulators that have two coupling paths or structures between an input port to an output port, at least one of which includes an optical resonator. | 06-24-2010 |
20100209038 | HITLESS TUNING AND SWITCHING OF OPTICAL RESONATOR AMPLITUDE AND PHASE RESPONSES - A hitless tunable filter may include a ring resonator, a Mach-Zehnder coupler, and first and second phase shifters. The Mach-Zehnder coupler may include a switching arm that is coupled to the ring resonator at first and second coupling points. The first phase shifter may be used to introduce a first phase shift to light propagating through the ring resonator, while the second phase shifter may be used to introduce a second phase shift to light propagating through the Mach-Zehnder coupler. The Mach-Zehnder coupler may have a free spectral range substantially equal to a free spectral range of the ring resonator divided by a non-negative integer. | 08-19-2010 |
20100303122 | CAVITY DYNAMICS COMPENSATION IN RESONANT OPTICAL MODULATORS - Disclosed are resonant optical modulators, and methods of use thereof, that achieve constant photon populations in the resonator by simultaneously modulating at least two variable modulation parameters. | 12-02-2010 |
20110026879 | FABRICATION-TOLERANT WAVEGUIDES AND RESONATORS - An optical waveguide having a core region with a substantially rectangular cross-section with a selected aspect ratio of width to height. Embodiments include devices incorporating the optical waveguide and methods for using the optical waveguide. | 02-03-2011 |
20110158584 | LOW-LOSS BLOCH WAVE GUIDING IN OPEN STRUCTURES AND HIGHLY COMPACT EFFICIENT WAVEGUIDE-CROSSING ARRAYS - Low-loss waveguide structures may comprise a multimode waveguide supporting a periodic light intensity pattern, and attachments disposed at the waveguide adjacent low-intensity regions of the light intensity pattern. | 06-30-2011 |
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 |
20140193115 | Method and Apparatus for Optical Waveguide-to-Semiconductor Coupling and Optical Vias for Monolithically Integrated Electronic and Photonic Circuits - An optical coupler has a waveguide coupled to a grating of multiple scattering units, each scattering unit having a first scattering element formed of a shape in a polysilicon gate layer and a second scattering element formed of a shape in a body silicon layer of a metal-oxide-semiconductor (MOS) integrated circuit (IC). The couplers may be used in a system having a coupler on each of a first and second IC, infrared light being formed into a beam passing between the couplers. Vias may be interposed in third ICs between the first and second ICs. The couplers may be configured with nonuniform width of scattering elements to produce Gaussian or focused beams. | 07-10-2014 |
20140193155 | Microphotonic Coupled-Resonator Devices - An optical resonator supports three resonance modes and having third-order optical nonlinearity. One or more waveguides are coupled to the three resonant modes. A waveguide input port is more strongly coupled to the first resonant mode than to the second and third resonant modes. A waveguide output port is more strongly coupled to at least one of the second and third resonant modes than to the first resonant mode. An optical filter has at least two optical resonators. The optical filter provides a passband having at least two poles and a transmission zero positioned outside the two poles. An optical demultiplexer includes first optical filter coupled in series with a second optical filter. Both optical filters provide a passband having at least two poles and a zero positioned outside the two poles. The zero of the first filter is located within the passband of the second filter. | 07-10-2014 |
20160054520 | METHOD AND STRUCTURE PROVIDING A FRONT-END-OF-LINE AND A BACK-END-OF-LINE COUPLED WAVEGUIDES - An integrated structure and method of formation provide a lower level waveguide having a core of a first material and a higher level waveguide having a core of a second material and a coupling region for coupling the two waveguides together. The different core materials provided different coupled waveguides having different light loss characteristics. | 02-25-2016 |
20160056309 | METHOD AND OPTOELECTRONIC STRUCTURE PROVIDING POLYSILICON PHOTONIC DEVICES WITH DIFFERENT OPTICAL PROPERTIES IN DIFFERENT REGIONS - Method and structural embodiments are described which provide an integrated structure using polysilicon material having different optical properties in different regions of the structure. | 02-25-2016 |
Patent application number | Description | Published |
20100284033 | SYSTEM, METHOD AND COMPUTER PROGRAM FOR ENABLING SIGNINGS AND DEDICATIONS ON A REMOTE BASIS - A system, method and computer program for enabling signings/dedications on a remote basis is provided. A first computer at a first location is associated with an individual from whom a signature or dedication is required. A second computer at a location where the signing or dedication is required is linked to the first computer so as to provide a two-way audiovisual communication system. The second computer is operate e to receive input from one or more individuals regarding their request for a signature and/or dedication, and to communicate the request to the first computer. The first computer is operable to permit the individual associated with the first computer to review the request, and based on such request provide a signature and/or personalized dedication as an input to an input device connected to the first computer. The first computer transmits the signature and/or personalized dedication from the first computer to the second computer. The second computer is >@5r0+5 to receiving the signature and/or personalized dedication, and provide the signature and/or personalized dedication to a plotting apparatus device connected to the second computer. The plotting apparatus device is >@5r0+5 to apply the signature and/or personalized dedication introduced to the plotting apparatus device to an article, substantially in the handwriting of the individual associated with the first computer, based on the operation of the plotting apparatus device. A computer program for enabling the functions described is also provided. A related method is also disclosed. | 11-11-2010 |
20110245732 | Monitoring System for Pressure Sore Prevention - Systems and methods for monitoring pressure at a contact surface, for applications such as pressure sore prevention. The system includes a number of force sensors positioned at different locations in relation to the contact surface, the force sensors providing a signal in proportion to the amount of force detected. The system includes a controller for receiving the signals from the force sensors and determining values associated with each force sensor. The controller is configured for comparing a first one or more values associated with a first subset of force sensors with a second one or more values associated with a second subset of force sensors, determining from the comparing whether a threshold between said first one or more values and said second one or more values has been exceeded, and controlling, based on the determining, an indicator to provide an indication to the user. | 10-06-2011 |
20150039133 | SYSTEM, METHOD AND COMPUTER PROGRAM FOR ENABLING SIGNINGS AND DEDICATIONS ON A REMOTE BASIS - A system, method and computer program for enabling signings/dedications on a remote basis is provided. A first computer at a first location is associated with an individual from whom a signature or dedication is required. A second computer at a location where the signing or dedication is required is linked to the first computer so as to provide a two-way audiovisual communication system. The second computer is operate e to receive input from one or more individuals regarding their request for a signature and/or dedication, and to communicate the request to the first computer. The first computer is operable to permit the individual associated with the first computer to review the request, and based on such request provide a signature and/or personalized dedication as an input to an input device connected to the first computer. The first computer transmits the signature and/or personalized dedication from the first computer to the second computer. The second computer is >@5r0+5 to receiving the signature and/or personalized dedication, and provide the signature and/or personalized dedication to a plotting apparatus device connected to the second computer. The plotting apparatus device is >@5r0+5 to apply the signature and/or personalized dedication introduced to the plotting apparatus device to an article, substantially in the handwriting of the individual associated with the first computer, based on the operation of the plotting apparatus device. A computer program for enabling the functions described is also provided. A related method is also disclosed. | 02-05-2015 |
20150148866 | METHOD FOR FUNCTIONAL ELECTRICAL STIMULATION THERAPY - A functional electrical stimulation method for rehabilitating, treating, retraining, and/or otherwise improving upper extremity mobility and control in persons having impaired or disabled upper extremities due to stroke or spinal cord injury, comprising stimulation of the lumbricalis muscles. | 05-28-2015 |
Patent application number | Description | Published |
20080273835 | Optical coupled resonator structures based on loop-coupled cavities and loop coupling phase - A resonator structure includes an input waveguide and an output waveguide. In one embodiment, the resonator structure also includes at least one resonator that couples the input waveguide to the output waveguide and a directional coupler that optically couples the input waveguide to the output waveguide. In another embodiment, the resonator structure includes a plurality of ring resonators that couple the input waveguide to the output waveguide. The plurality of ring resonators include a sequence of ring resonators that form a coupling loop. Each ring resonator in the sequence is coupled to at least two other ring resonators in the sequence and the first ring resonator in the sequence is coupled to the last ring resonator in the sequence so as to form the coupling loop. | 11-06-2008 |
20090142019 | Low-loss bloch wave guiding in open structures and highly compact efficient waveguide-crossing arrays - Low-loss waveguide structures may comprise a multimode waveguide supporting a periodic light intensity pattern, and attachments disposed at the waveguide adjacent low-intensity regions of the light intensity pattern. | 06-04-2009 |
20090220228 | Wide Free-Spectral-Range, Widely Tunable and Hitless-Switchable Optical Channel Add-Drop Filters - Optical devices extending the free spectral range and tunability of, and enabling hitless switching of, integrated optical filters suitable for add-drop filters. Devices include (i) a splitter device configured to split an input spectrum among a plurality of output ports, and a combiner device configured to combine at least a portion of the split input spectrum into a single output port, splitter and combiner having respective first and second input and output ports, and a respective transfer matrix, the matrix of the combiner being the diagonal transpose of that of the splitter; (ii) a first optical path coupling the first output port of the splitter and the first input port of the combiner; (iii) a second optical path coupling the second output port of the splitter and the second input port of the combiner, wherein the first and second optical paths are configured to introduce, at least at a wavelength of the input spectrum, a relative phase shift of π radians; and (iv) an optical filter coupled to at least one of the first and second optical paths. | 09-03-2009 |
20090274418 | REDUCTION OF SUBSTRATE OPTICAL LEAKAGE IN INTEGRATED PHOTONIC CIRCUITS THROUGH LOCALIZED SUBSTRATE REMOVAL - Structures including optical waveguides disposed over substrates having a chamber or trench defined therein, and methods for formation thereof. | 11-05-2009 |
20090290835 | OPTICAL-COUPLED RESONATOR STRUCTURES BASED ON LOOP-COUPLED CAVITIES AND LOOP COUPLING PHASE - A resonator structure includes an input waveguide and an output waveguide. In one embodiment, the resonator structure also includes at least one resonator that couples the input waveguide to the output waveguide and a directional coupler that optically couples the input waveguide to the output waveguide. In another embodiment, the resonator structure includes a plurality of ring resonators that couple the input waveguide to the output waveguide. The plurality of ring resonators include a sequence of ring resonators that form a coupling loop. Each ring resonator in the sequence is coupled to at least two other ring resonators in the sequence and the first ring resonator in the sequence is coupled to the last ring resonator in the sequence so as to form the coupling loop. | 11-26-2009 |
20120128350 | BALANCED BYPASS CIRCULATORS AND FOLDED UNIVERSALLY-BALANCED INTERFEROMETERS - The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second bi-directional optical path. | 05-24-2012 |