INTELLIGENT BAIL
Granted: July 24, 2014
Application Number:
20140205298
An identification device is configured to be coupled externally to an optoelectronic device to provide connectivity and/or identification information in an optical network in which the optoelectronic device is implemented. The identification device may include an integrated circuit with unique identification information and a plurality of contacts coupled to the integrated circuit and configured to be coupled to an outside identification system. The outside identification system…
PIPELINED PIXEL APPLICATIONS IN LIQUID CRYSTAL ON SILICON CHIP
Granted: July 24, 2014
Application Number:
20140204330
An example embodiment includes a LCOS IC. The LCOS IC includes multiple pixels, a column driver, and multiple conductive lines. The pixels are arranged in a pixel array. The column driver is configured to supply multiple signals to a column of pixels included in the pixel array. Each of the conductive lines couples the column driver to a subset of pixels in the column of pixels. The conductive lines are configured such that two or more of the signals can be supplied to two or more of the…
LOCAL BUFFERS IN A LIQUID CRYSTAL ON SILICON CHIP
Granted: July 24, 2014
Application Number:
20140204299
An example embodiment includes a liquid crystal on silicon (LCOS) system. The LCOS system includes multiple pixels, a pixel voltage supply source (voltage source), an external buffer, and a local buffer. The voltage source is configured to supply an analog ramp to the pixels. The external buffer is configured to buffer the voltage source from the pixels. The local buffer is configured to buffer the external buffer from a subset of pixels of the plurality of pixels.
PIXEL TEST IN A LIQUID CRYSTAL ON SILICON CHIP
Granted: July 24, 2014
Application Number:
20140204298
An example embodiment includes a continuity testing method of a pixel in a liquid crystal on silicon integrated circuit. The method includes writing a first voltage to a pixel. The pixel is isolated and a wire that is selectively coupled to the pixel is discharged. The method also includes enabling a sensing amplifier configured to sense voltage on the wire. The pixel is electrically coupled to the wire and a resultant voltage on the wire is sensed.
Lasers With InGaAsP Quantum Wells And GaAsP Barrier Layers
Granted: July 17, 2014
Application Number:
20140198817
A laser can include an active region having: one or more quantum wells having InGaAsP; and two or more quantum well barriers having GaAsP bounding the one or more quantum wells, wherein the active region is devoid of Al. The laser emits light having about 850 nm. The one or more quantum wells can have a composition InxGa1-xAs1-yPy according to Equation 1: y=0.0018567*QW+1.18*x?0.14373, where QW is the width of the quantum well in Angstroms; x is mole fraction of In; and y is mole…
OPTO-ISOLATOR INCLUDING A VERTICAL CAVITY SURFACE EMITTING LASER
Granted: July 17, 2014
Application Number:
20140197338
An opto-isolator is disclosed that include a vertical cavity surface emitting laser (VCSEL), a photodetector and a package enclosing the VCSEL and the photodetector. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL.
Multi Directional Multiplexer
Granted: July 3, 2014
Application Number:
20140186038
Described herein is an optical transmission cross-connect for routing wavelength signals to a bank of directionless transceivers. One embodiment (1) includes an array of four common-port fibers (3) for transmitting and receiving a multiplexed optical signal and an array of sixteen add/drop fibers (5) for receiving and transmitting demultiplexed signals including individual wavelength channels. A dispersive grism (7) simultaneously spatially separates the wavelength channels from the…
OPTICAL FIBER SECURING DEVICE
Granted: July 3, 2014
Application Number:
20140185995
An optical fiber securing device may include a passage, an epoxy well, an epoxy path, an optical fiber seat, and a protrusion. The passage may have an entrance and an exit, the passage configured to receive therein an optical fiber inserted through the entrance. The epoxy well may be configured to receive therein epoxy. The epoxy path may provide a pathway for epoxy between the epoxy well and the passage. The optical fiber seat may be configured to receive at least a portion of the…
SEMICONDUCTOR LASER DEVICE
Granted: June 26, 2014
Application Number:
20140177659
A laser device (100) includes a laser (110; 210; 310; 410; 510) in turn including at least one Distributed Bragg Reflector (DBR) section (111), at least one phase section (112) and at least one gain section (113), further including a laser control element (150), a feedback control element (140) and a frequency noise discriminator (130,131), which feedback control element is arranged to feed a variable feedback signal to at least one of the at least one DBR section and the at least one…
PIN CADENCE FOR HIGH-SPEED CONNECTORS
Granted: June 26, 2014
Application Number:
20140178014
A connector includes pins having a pinout including a functional designation cadence. The functional designation cadence includes a first ground pin, a first signal pin, a no-connect pin, a second signal pin, and a second ground pin, where the first signal pin is positioned between the first ground pin and the no-connect pin, the no-connect pin is positioned between the first and second signal pins, and the second signal pin is positioned between the no-connect pin and the second ground…
HEAT SINK RETENTION IN AN OPTICAL COMPONENT
Granted: June 12, 2014
Application Number:
20140161399
An example embodiment includes a retention spring. The retention spring includes a central portion, a coupling feature, and a spring arm. The central portion includes a heat sink contact surface configured to contact a detachable heat sink. The coupling feature is configured to mechanically couple the retention spring to an optical component. The spring arm connects the central portion to the coupling feature. The spring arm is configured to elastically deform to allow insertion of the…
Method for modifying the combining or splitting ratio of a multimode interference coupler
Granted: June 12, 2014
Application Number:
20140161388
Method for modifying the splitting or combining ratio of a first multimode interference (MMI) coupler (100), which first coupler is arranged to convey light from one or several input waveguides to one or several output waveguides, wherein a film (103a) of a material is arranged over the first coupler, wherein the film is strained so that a force is applied by the film to the surface of the first coupler, and so that the refractive index profile in the material of the first coupler…
OPTICAL COMPONENT ARRAYS IN OPTICAL CONNECTORS
Granted: June 5, 2014
Application Number:
20140153866
An example embodiment includes an optical connector. The optical connector includes a printed circuit board (PCB), multiple optical components, multiple optical fibers, and a lens assembly. The optical components are mounted to the PCB. Additionally, each of the optical components includes an aperture. The lens assembly is positioned on the PCB. The lens assembly defines a cavity in which the optical components are positioned. Additionally, the lens assembly defines optical fiber seats…
DP-QPSK DEMODULATOR
Granted: May 15, 2014
Application Number:
20140133012
In an embodiment, a demodulator includes first, second, third, fourth and fifth beam displacers, a half waveplate, and a quarter waveplate. The second beam displacer is positioned to receive an output from the first beam displacer. The third beam displacer is positioned to receive an output from the second beam displacer. The half waveplate is positioned to receive an output from the third beam displacer. The fourth beam displacer is positioned to receive an output from the half…
COMMUNICATION MODULE LATCHING MECHANISM
Granted: May 8, 2014
Application Number:
20140126957
An example embodiment includes a latching mechanism configured to selectively secure a communication module to a receptacle of a host device. The latching mechanism includes a latch, a cam, and a latch release. The latch includes a latch hook and a latch protrusion. The cam is mechanically coupled to the latch release. The cam is positioned with respect to the latch such that an activation force applied to the latch release translates the cam to contact the latch protrusion and displace…
INTEGRATED CIRCUITS IN OPTICAL RECEIVERS
Granted: May 1, 2014
Application Number:
20140119746
A circuit may include a photodiode configured to receive an optical signal and convert the optical signal to a current signal. The circuit may also include a transimpedance amplifier coupled to the photodiode and configured to convert the current signal to a voltage signal. The circuit may also include an equalizer coupled to the transimpedance amplifier and configured to equalize the voltage signal to at least partially compensate for a loss of a high frequency component of the optical…
APPARATUS HAVING FIRST AND SECOND TRANSCEIVER CELLS FORMED IN A SINGLE INTEGRATED CIRCUIT
Granted: May 1, 2014
Application Number:
20140119736
An apparatus having first and second transceiver cells formed in a single integrated circuit. In one example embodiment, an apparatus includes a first transceiver cell including a first set of components configured to enable communication on a first communication link in a network and a second transceiver cell formed underneath the first transceiver cell in a single integrated circuit (IC). The second transceiver cell is optically isolated from the first transceiver cell. The second…
LATCH MECHANISM FOR COMMUNICATION MODULE
Granted: April 17, 2014
Application Number:
20140104808
Latch mechanism for communication modules. In an example embodiment, a module latch mechanism includes a follower configured to be slidingly positioned relative to a housing and a driver configured to be rotatingly positioned relative to the housing. The follower includes a first arm configured to facilitate selective engagement of the housing with a host device. The follower may further include a fastening mechanism configured to facilitate selective engagement of the follower with the…
OPTICAL CHANNEL MONITOR
Granted: April 3, 2014
Application Number:
20140093237
In one example, an optical channel monitor includes a tunable filter, a deinterleaver, first and second optical receivers, and a control module. The tunable filter is configured to receive an optical signal having a plurality of channels spaced at a nominal channel spacing. The deinterleaver has an input with an input channel spacing Fi, an even output, and an odd output, the input being connected to an output of the tunable filter. The nominal channel spacing is between about one and…
OPTICAL WAVEGUIDE SPLITTER
Granted: March 27, 2014
Application Number:
20140086522
An optical waveguide splitter with a symmetric splitting power ratio having one input port and two output ports, includes a substrate and one or more vertical waveguide layers deposited thereon or diffused thereinto, and optionally one or more cladding layers deposited upon the waveguide layer(s). The waveguide layers and optionally one or more cladding layer together and optionally with the substrate form a profile of the refractive index that supports the propagation of light in a…
