THERMAL MANAGEMENT STRUCTURES FOR OPTOELECTRONIC MODULES
Granted: October 1, 2015
Application Number:
20150282303
An example embodiment includes optoelectronic module. The optoelectronic module may include a lens assembly, a module board, heat-generating components, and a thermally conductive plate. The lens assembly may be secured to the module board. The module board may include a printed circuit board (PCB). The heat-generating components may be mounted to the PCB. The thermally conductive plate may be secured to a surface of the module board. The thermally conductive plate may define an opening…
Polarization Diverse Wavelength Selective Switch
Granted: July 23, 2015
Application Number:
20150208143
Described herein is a wavelength selective switch (WSS) type optical switching device (1) configured for switching input optical beams from input optical fiber ports (3, 5 and 7) to an output optical fiber port (9). Device (1) includes a wavelength dispersive grism element (13) for spatially dispersing the individual wavelength channels from an input optical beam in the direction of a second axis (y-axis). The optical beams propagate from input ports (3, 5 and 7) in a forward direction…
Method And Apparatus For Stabilization Of Optical Transmitter
Granted: July 23, 2015
Application Number:
20150207569
A DP-QPSK optical transmitter includes an outer MZM comprising a first parent MZM comprising a first child MZM and a second child MZM that modulates a QPSK signal with a first polarization. A second parent MZM includes a first child MZM and a second child MZM that modulates a QPSK signal with a second polarization. The outer Mach-Zehnder modulator multiplexes the first and second polarization embedded into a dual-polarization QPSK signal generation. A first optical detector detects the…
POLARIZATION-DEPENDENT LOSS COMPENSATOR
Granted: July 23, 2015
Application Number:
20150205048
In an embodiment, a polarization-dependent loss (PDL) compensator includes a substrate, an anti-reflective coating, and a partial reflective coating. The substrate has an input surface and an output surface opposite the input surface. The anti-reflective coating is formed on the output surface. The partial reflective coating is formed on the input surface. The PDL compensator may include PDL that depends on an incident angle of an optical signal with respect to the partial reflective…
Ultrafast High Resolution Optical Channel Monitor
Granted: March 26, 2015
Application Number:
20150086198
Described herein is an optical channel monitor (1) including a protective housing (3), an input port (5) disposed in the housing (3) and configured for receiving at least one input optical signal (7) including one or more optical channels separated by wavelength. A wavelength configurable laser (9) is located within the housing (3) and is configured to provide an optical reference signal (11) at a first wavelength (?r). The laser (9) is adapted to scan across a range of wavelengths…
METHOD FOR MODULATING A CARRIER LIGHT WAVE
Granted: March 5, 2015
Application Number:
20150063827
Method for modulating a carrier light wave to achieve, a modulated light wave which carries information by symbols selected from a set of at least two different symbols. The light led through each path is phase-shifted by a respective total variable part phase shift, which for each path is the sum of at least three respective variable part phase shifts. Each variable part phase shift for each modulation state assumes one of two respective predetermined values, and each symbol is…
METHOD FOR MODULATING A CARRIER LIGHT WAVE
Granted: March 5, 2015
Application Number:
20150063742
Method for modulating a carrier light wave with symbols, led through a modulating interferometer, the total path phase shift being the sum of a respective first, second, third or fourth static phase shift and a respective first, second, third or fourth variable modulating phase shift amount. For each of at least two symbols: the first variable modulating phase shift equals the sum of the first pair phase shift and the common phase shift; the second variable modulating phase shift…
Optical Channel Monitor With High Resolution Capability
Granted: December 25, 2014
Application Number:
20140376909
Described herein is an optical channel monitor (1) including one or more input optical ports (3) for receiving an input optical signal (5) including a plurality of optical channels. A first monitoring module (7) is configured to selectively scan a predetermined spectral region of the optical signal including at least one optical channel for low resolution monitoring. A second monitoring module (11) is configured to simultaneously scan a subregion within the predetermined spectral region…
SEMICONDUCTOR OPTICAL AMPLIFIER
Granted: December 11, 2014
Application Number:
20140362433
One or more input access waveguides are connected to an optical splitter arranged to divide the light into two or more output waveguides, at least two of the splitter's output access waveguides are used to form a Mach-Zehnder interferometer modulator where at least one arm of the interferometer has a phase modulator electrode and a single electrical contact is arranged to apply a common voltage simultaneously to a selected portion in each arm, or selected portions in each arm of the…
RIGID-FLEXIBLE CIRCUIT INTERCONNECTS
Granted: December 4, 2014
Application Number:
20140355228
In an example embodiment, a circuit interconnect includes a first printed circuit board (PCB), a second PCB, a spacer, and an electrically conductive solder joint. The first PCB includes a first electrically conductive pad. The second PCB includes a second electrically conductive pad. The spacer is configured to position the first PCB relative to the second PCB such that a space remains between the first PCB and the second PCB after the first electrically conductive pad and the second…
Systems And Methods of Aberration Correction In Optical Systems
Granted: November 27, 2014
Application Number:
20140347733
Described herein is a diffraction grating (1) for use in an optical system. The diffraction grating includes a substrate (2) and an array of elongate diffracting elements (3) arranged in a grating profile across the substrate. The grating profile imparts a predefined phase change to optical beams to at least partially correct the beams for optical aberrations present in the optical system.
THERMAL MANAGEMENT STRUCTURES FOR OPTOELECTRONIC SYSTEMS
Granted: November 6, 2014
Application Number:
20140329405
An example embodiment includes a thermal management system for an active cable connector. The system includes a shell and a back plate. The shell defines a cavity and includes multiple heat-transfer areas on an internal shell surface. A first heat-transfer area is positioned with respect to a first heat-generating component to absorb a first portion of thermal energy generated by the first heat-generating component. The back plate is positioned with respect to the first heat-generating…
PLUGGABLE OPTICAL HOST AND NETWORK I/O OPTOELECTRONIC MODULE
Granted: September 18, 2014
Application Number:
20140270765
In an embodiment, a pluggable optical host and network I/O optoelectronic module (hereinafter “module”) includes a first optical-electrical-optical (OEO) converter and a second OEO converter. The first OEO converter is configured to convert N inbound optical signals to M inbound optical signals and includes N network-side optical receivers, first signal processing circuitry communicatively coupled to the N network-side optical receivers, and M host-side optical receivers…
OPTICAL SOURCE MONITORING SYSTEM
Granted: September 18, 2014
Application Number:
20140270750
An example embodiment includes an optical transmission device. The optical transmission device includes an optical source, a collimator lens, and an optical monitor. The optical source is configured to transmit a channel of light. The collimator lens is configured to reflect a portion of the channel of light. The optical monitor is arranged to receive at least a first portion of the reflected channel of light directly from the collimator lens, and is configured to communicate a gross…
SHORT GAIN CAVITY DISTRIBUTED BRAGG REFLECTOR LASER
Granted: September 18, 2014
Application Number:
20140269807
A long wavelength, short cavity laser can include: an active region or gain cavity having a length from about 10 microns to about 150 microns; a gap region adjacent to the active region and having a gap length that is less than 30 microns or less than the length of the active region; and a distributed Bragg reflector (“DBR”) region having a grating with a kappa of at least about 200 cm?1, wherein the gap region is between the active region and the DBR region, and wherein the laser…
Lasers With GaPSb Barrier Layers
Granted: September 18, 2014
Application Number:
20140269802
A laser active region can include a quantum well barrier having GaPSb. The active region can include one or more quantum wells, and a quantum well barrier having GaPSb bounding each side of each of the one or more quantum wells. The quantum well barrier can be GaP1-wSbw, where w ranges from about 0.12 to about 0.25 mole fraction, and can have a thickness of from about 20 Angstroms to about 50 Angstroms. The one or more quantum wells include InGaAs or InGaAsP. Various types of lasers can…
LATCH MECHANISM FOR COMMUNICATION MODULE
Granted: September 11, 2014
Application Number:
20140254993
Some embodiments include a latch mechanism and an optoelectronic module that includes the latch mechanism. The latch mechanism may include a driver, a follower, a pivot member, and a cam member. The driver may be configured to rotate relative to a housing of the optoelectronic module about an axis of rotation. The follower may be configured to be slidably positioned relative the housing. The follower may include a resilient member configured to interface with the housing and may define…
Multicast Optical Switch
Granted: September 11, 2014
Application Number:
20140254982
Described herein is an optical switch (1), including 4 common port optical fibers (e.g. 3), disposed in a vertical y dimension, a wavelength independent beam splitter (5), a switching unit (7) and 16 add/drop optical fibers (e.g. 9), disposed in a horizontal x dimension. In one direction of operation, the common port fibers (3) project respective optical beams (e.g. 11) to beam splitter (5), which physically splits each optical beam (11) into a plurality of separate sub beams (e.g. 15).…
SELF-TESTING INTEGRATED CIRCUITS
Granted: September 11, 2014
Application Number:
20140254653
In an example, a self-testing integrated circuit (IC) includes N channels i and a controller, where i is an integer from 1 to N. Each channel i may include a clock and data recovery circuit (CDR), a pseudorandom bit stream (PRBS) generator circuit, and a PRBS checker and eye quality monitor (EQM) circuit. The controller may be configured to selectively couple the channels i in a daisy chain during self-testing.
LATCHING MECHANISMS FOR PLUGGABLE ELECTRONIC DEVICES
Granted: August 28, 2014
Application Number:
20140242826
Latching mechanisms for pluggable electronic devices when received within a host cage of a host device. In one example embodiment, the host cage is configured to be connected to a host printed circuit board and configured to at least partially surround a host connector. The host cage includes a pair of inwardly biased leaf springs that extend toward the host connector and thereby engage with the latching mechanism of the pluggable electronic module in order to secure the pluggable…
