IMPLANTED VERTICAL CAVITY SURFACE EMITTING LASER
Granted: December 10, 2009
Application Number:
20090305447
A method of forming a gain guide implant for a vertical cavity surface emitting laser (VCSEL) comprises implanting ions into a wafer to simultaneously form a first non-conducting portion of the gain guide implant spaced apart from an active region and a second non-conducting portion of the gain guide implant occupying the active region, the first non-conducting portion laterally offset relative to the second non-conducting portion.
MODULAR HEATSINK MOUNTING SYSTEM
Granted: November 19, 2009
Application Number:
20090284930
In one example, a host system includes a PCB, a plurality of rails disposed on the PCB, and a connector disposed on the PCB. The PCB, rails and connector define a slot configured to receive an optoelectronic module. The host system further includes means for removably mounting a modular heatsink to the host system such that the host system directly contacts the optoelectronic module when the optoelectronic module is fully inserted into the slot. The means for removably mounting has a…
METHOD AND APPARATUS FOR DEMODULATING AND REGENERATING PHASE MODULATED OPTICAL SIGNALS
Granted: November 12, 2009
Application Number:
20090279902
A DPSK/DQPSK receiver includes an optical splitter that separates the received DPSK/DQPSK optical signal according to an optical power splitting ratio into a plurality of received optical signals. A plurality of optical filters passes a plurality of filtered received optical signals. A plurality of optical detectors generates a plurality of electrical detection signals, each with a power that is related to a power of a respective filtered optical signal. A plurality of amplifiers…
RECREATING ERRORS IN A NETWORK DEVICE
Granted: November 12, 2009
Application Number:
20090282290
Recreating errors in a network device. In one embodiment, a method for recreating an error condition in a network device includes capturing a first set of commands sent to a network device; identifying an error condition in the network device, the error condition corresponding to the captured first set of commands; and sending a second set of commands to the network device in a second attempt to recreate the error condition. The second set of commands includes the first set of commands…
POWERED LATCHING MECHANISM FOR A MODULE
Granted: November 5, 2009
Application Number:
20090275230
A latching system for use in selectively securing a module within a receptacle of a host device is described. In one or more examples, the latching system includes a powered actuation mechanism and a latching mechanism. In one or more examples, the module latching mechanism includes a latch and the powered actuation mechanism disengages a latch from a catch. In one or more examples, two latches are provided. In one or more examples, the latching mechanism of a module includes a pusher…
FEED THRU WITH FLIPPED SIGNAL PLANE USING GUIDED VIAS
Granted: October 29, 2009
Application Number:
20090267712
An embodiment of the invention includes a high speed feed thru connecting a first circuit outside a housing to a second circuit inside the housing. The first circuit includes a first high speed integrated circuit chip and the second circuit includes a second high speed integrated circuit chip or optoelectronic device. The high speed feed thru includes an inside coplanar structure positioned at least partially inside the housing, the inside coplanar structure connected to the second…
PASSIVE WAVE DIVISION MULTIPLEXED TRANSMITTER HAVING A DIRECTLY MODULATED LASER ARRAY
Granted: October 29, 2009
Application Number:
20090269069
An wave division multiplexed (WDM) optical transmitter is disclosed including a directly modulated laser array and a planar lightwave chip (PLC) having a plurality of OSRs that receive outputs of the laser array and increase the extinction ratio of the received light. An optical multiplexer receives the outputs of the OSRs and couples them to a single output port. The multiplexer has transmission peaks through its ports each having a 0.5 dB bandwidth including the frequency of a laser in…
INTELLIGENT BAIL
Granted: October 22, 2009
Application Number:
20090261955
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…
TUNING SYSTEM AND METHOD USING A SIMULATED BIT ERROR RATE FOR USE IN AN ELECTRONIC DISPERSION COMPENSATOR
Granted: October 22, 2009
Application Number:
20090262870
A system and method is disclosed for controlling signal conditioning parameters and a sampling parameter controlling conversion of a received signal to digital sampled values prior to decoding. The sampled values are decoded according to a comparison with expected values calculated according to a model of a transmission channel. The model is also updated from time to time by comparing the expected values with actual sampled values. Variation of the expected values over time is…
FAULT ANALYSIS AND MONITORING APPLICATIONS USING OUT-OF-BAND BASED MODULES
Granted: October 22, 2009
Application Number:
20090265142
One example embodiment includes a testing device. The testing device comprises a signal reception element, an out-of-band detector and testing logic. The signal reception element is configured to receive a physical layer signal from a communication module via a physical link and to produce an incoming double modulated signal, the incoming double modulated signal including a high-speed data signal and an out-of-band data signal. The out-of-band data signal comprises diagnostic data of the…
Directly Modulated Laser with Isolated Modulated Gain Electrode for Improved Frequency Modulation
Granted: September 24, 2009
Application Number:
20090238224
A DBR laser, such as a semiconductor DBR laser is disclosed having improved frequency modulation performance. The laser includes a split gain electrode and a tuning electrode. A modulating current encoding a data signal is injected into a first section of the gain electrode whereas a substantially DC bias voltage is imposed on a second section of the gain electrode positioned between the first gain electrode and the tuning electrode. The first and second gain electrodes are electrically…
ANTICOUNTERFEITING MEANS FOR OPTICAL COMMUNICATION COMPONENTS
Granted: September 24, 2009
Application Number:
20090240945
Methods and systems for detecting counterfeit optical communications products are described. An exemplary system includes a host device and a fiber optic component, such as an optical transceiver. The optical transceiver may include a TOSA, a ROSA, a controller circuit, and a memory module. The controller circuit may be operably connected to the TOSA, the ROSA, and the memory module. The host device may send a set of challenge data to the optical transceiver. The optical transceiver may…
PHASE DETECTOR UTILIZING ANALOG-TO-DIGITAL CONVERTER COMPONENTS
Granted: September 3, 2009
Application Number:
20090219008
Methods and systems are provided for an improved phase detector utilizing analog-to-digital converter (ADC) components. In an embodiment, the method includes from an ADC having a sampling clock signal that determines sampling instants, obtaining a first comparison value between an analog signal and a first threshold voltage at a first sampling instant, and obtaining a second comparison value between the analog signal and a second threshold voltage at a second sampling instant. The method…
EXTINCTION RATIO CONTROL USING A FREQUENCY SPREAD TONE TO MODULATE OPTICAL SIGNAL POWER LEVELS
Granted: August 20, 2009
Application Number:
20090208214
An optical transmitter that controls the extinction ratio by modulating a power level of an optical signal using a frequency spread tone. An electro-optic transducer driver generates an electrical signal that is to be converted into an optical signal. Meanwhile, a tone generator generates an electrical tone having a relatively narrow frequency spectrum. A frequency spreading circuit frequency spreads the electrical tone. A modulator modulates a power level of the electrical signal using…
VARIABLE OPTICAL ATTENUATOR INTEGRATION INTO TRANSMITTER OPTICAL SUBASSEMBLIES
Granted: August 20, 2009
Application Number:
20090208225
A small-scale VOA system includes a polarization rotator, a voltage multiplier circuit, and at least one transistor. The polarization rotator can be positioned within a TOSA along the emission axis of a corresponding optical signal source in addition to one or more polarizers. A microcontroller provides a first low voltage control signal to a voltage multiplier to generate a large voltage DC signal which is provided to the transistor. The transistor modulates the large voltage signal…
MONOLITHIC POWER MONITOR AND WAVELENGTH DETECTOR
Granted: August 6, 2009
Application Number:
20090196631
Monolithic single and/or dual detector structures are fabricated on the emitting surface of a VCSEL and/or on a lens or glass substrate configured to be positioned along the axis of emission of an optical light source. Each monolithic detector structure includes one or two PIN detectors fabricated from amorphous silicon germanium with carbon doping or amorphous germanium with hydrogen doping. The monolithic detectors may additionally include various metallization layers, buffer layers,…
HEAT MANAGEMENT IN AN ELECTRONIC MODULE
Granted: July 30, 2009
Application Number:
20090190310
In one example, an electronic module includes a printed circuit board and a housing at least partially enclosing the printed circuit board. The printed circuit board includes a heat-generating component. The housing includes a first case and a second case attached to the first case. The first and second cases cooperatively define a sealed cavity containing a fluid. The second case includes a thermal contact structure positioned proximate to the heat-generating component.
LOGGING MECHANISM FOR AN INTELLIGENT TRANSMITTER MODULE
Granted: July 16, 2009
Application Number:
20090182531
An optoelectronic device having an intelligent transmitter module (“ITM”) includes a mechanism for logging operational information regarding the ITM. The optoelectronic device includes a microcontroller and a persistent memory. The microcontroller is configured to identify the operational information, and write log information representing the operational information to the persistent memory. The operational information may include statistical data about operation, or may include…
ELECTROMAGNETIC INTEFERENCE CONTAINMENT STRUCTURES
Granted: July 9, 2009
Application Number:
20090175582
In one example embodiment, an optoelectronic module comprises a body, a signal ground, and an OSA. The body is connected to chassis ground and defines a cavity within which one or more components are disposed. The optical subassembly is disposed in the body cavity, has one or more components connected to signal ground, and comprises a header assembly, a housing, and one or more containment structures. The header assembly houses one or more components that generate EMI emissions and…
DIGITAL DIAGNOSTICS PARAMETER STORAGE
Granted: July 2, 2009
Application Number:
20090168858
A method of managing storage of digital diagnostics parameters on a transceiver device may include loading stored digital diagnostics parameters into the system memory, receiving updates to the digital diagnostics parameters in the system memory, and writing the updates to the digital diagnostic parameters in the system memory to persistent memory while providing access to other components to the digital diagnostics parameters by way of the system memory.
