| Patent application number | Description | Published |
|---|
| 20080253305 | Undirected Cross Connects Based on Wavelength-Selective Switches - Undirected cross connects are provided based on wavelength-selective switches A demand d={i, j} is routed over a path p | 10-16-2008 |
| 20100119195 | METHOD AND APPARATUS FOR A WAVELENGTH INSENSITIVE 90-DEGREE HYBRID DEVICE - Various embodiments include means of reducing wavelength dependency of an optical device by causing oscillating modes within at least one terminal associated with the device. | 05-13-2010 |
| 20100158521 | OPTICAL MIXER FOR COHERENT DETECTION OF POLARIZATION-MULTIPLEXED SIGNALS - An optical mixer that, in one embodiment, has a single optical hybrid optically coupled to a single polarization beam splitter. The optical hybrid mixes a polarization-multiplexed optical communication signal and a local-oscillator signal to generate four mixed signals, each corresponding to a different relative phase shift between the communication and local-oscillator signals. The polarization beam splitter separates each of the mixed signals into two polarization components, subsequent processing of which enables an optical receiver employing the optical mixer to recover the data carried by the communication signal. | 06-24-2010 |
| 20100239268 | HIGH-SPEED OPTICAL MODULATION USING A QUANTUM-WELL MODULATOR - An optical transmitter having a quantum-well (QW) modulator and a method of operating the same. The QW modulator is configurable to perform both amplitude and phase modulation. Using the disclosed methods, the length of the QW modulator, one or more drive voltages, and/or an operating wavelength can be selected to enable the optical transmitter to generate a modulated optical signal having a relatively high bit rate, e.g., an optical duobinary signal having a bit rate greater than about 80 Gb/s. | 09-23-2010 |
| 20100284645 | SEMICONDUCTOR THERMOOPTIC PHASE SHIFTER - An optical device comprising a waveguide on a planar substrate. The waveguide includes a semi-conductive cladding layer that contacts electrical leads which are coupleable an electrical power source for controlling a refractive index of the cladding layer by passing electrical power through the cladding layer. | 11-11-2010 |
| 20100303461 | Undirected Cross Connects Based on Wavelength-Selective Switches - Undirected cross connects are provided based on wavelength-selective switches. A undirected Cantor network is disclosed where the switch nodes are wavelength selective switches. A undirected Clos cross connect is also disclosed where one or more undirected switches are undirected Cantor networks having at least one wavelength selective switch. | 12-02-2010 |
| 20110008001 | OPTICAL COUPLER - An optical device comprising a substrate having a planar surface and having an optical core thereon. The device also comprises a two-dimensional grating located in the optical core, said two-dimensional grating being formed by a regular two-dimensional pattern of light-refractive structures, one of said light-refractive structures being located at each node of a regular 2D lattice located in a laterally bounded region. The device also comprises first and second optical waveguides being on the planar substrate and having ends end-coupled to the two-dimensional grating, the first optical waveguide being such that a direction of propagation near the end thereof is substantially along a primitive lattice vector of said 2D lattice, the second optical waveguide being such that a direction of propagation near the end thereof is not-parallel to a primitive lattice vector of said regular 2D lattice. | 01-13-2011 |
| 20110038631 | COHERENT RECEIVER HAVING AN INTERLEAVE-CHIRPED ARRAYED WAVEGUIDE GRATING - An optical coherent detector that employs an interleave-chirped arrayed waveguide grating (AWG). The AWG has a periodic chirp pattern that enables the AWG to function as an optical 90-degree hybrid. If the AWG is implemented using a birefringent material, then the AWG can also function as a polarization demultiplexer. In one embodiment, the AWG is designed to simultaneously function as a wavelength demultiplexer, a polarization demultiplexer for each wavelength-division-multiplexed (WDM) signal component, and a 90-degree hybrid for each polarization-division-multiplexed component of each WDM signal component. | 02-17-2011 |
| 20110052114 | VERTICAL OPTICALLY EMITTING PHOTONIC DEVICES WITH ELECTRONIC STEERING CAPABILITY - An optical photonic device comprising a planar semiconductor substrate having a light-guiding layer thereon, a primary laser light source in said light-guiding layer and a vertical coupler optically coupled to the primary laser light source by waveguide portions of the light-guiding layer. The vertical coupler is configured to receive a light beam from the primary laser light source and redirect the light beam in a direction that is substantially perpendicular to a surface of the planar substrate. | 03-03-2011 |
| 20110150386 | PHOTONIC INTEGRATED CIRCUIT HAVING A WAVEGUIDE-GRATING COUPLER - A photonic integrated circuit (PIC) having a waveguide-grating coupler with two evanescently coupled waveguides. The first waveguide is fabricated using materials suitable for manufacturing active optical elements in the PIC. The second waveguide is fabricated using materials capable of providing a relatively high index-of-refraction contrast for the constituent waveguide grating. The waveguide-grating coupler is compatible with the III-V semiconductor technology while being relatively easy to fabricate on an industrial scale. | 06-23-2011 |
| 20110158577 | ADVANCED MODULATION FORMAT USING TWO-STATE MODULATORS - An optical modulator device comprising an interferometer. The interferometer includes an input optical coupler, an output optical coupler, and two or more controllable optical waveguides located on a substrate. Each controllable optical waveguide connects the input optical coupler to the output optical coupler and has two-state modulator along a segment thereof. The two or more controllable optical waveguides are connected to transmit an output to the output optical coupler, substantially different light amplitudes and/or phases when the two-state modulators of the two controllable optical waveguides are in different states, as driven by data streams having different information content. The two or more controllable optical waveguides are configured to modulate the light amplitudes and/or phases in a substantially same manner when the two-state modulators are in identical states. | 06-30-2011 |
