ELECTRICAL DEVICE WITH ELECTRICAL INTERFACE THAT IS COMPATIBLE WITH OPTICAL CABLES
Granted: December 23, 2010
Application Number:
20100325324
A device having a plug that is configured to mechanically interface with a receptacle external to the device. The plug also has an electrical interface that electrically interfaces with the receptacle even though the external receptacle has a mechanical and electrical interface shaped to interface with an integrated cable that includes an optical communication mechanism for communicating over most of the length of the integrated cable, and even though the device itself has a full…
AUTHENTICATION MODES FOR AN OPTICAL TRANSCEIVER MODULE
Granted: December 23, 2010
Application Number:
20100325298
Methods for authenticating an optical transceiver module to a host are disclosed. The transceiver comprises a receive signal line for transferring data from the transceiver to the host and a transmit signal line for transferring data from the host to the transceiver in preparation for transmission to a communications network. The transceiver includes a controller having a processor in communication with the host, and a first memory register assignable by the processor. A consolidated…
DBR Laser with Improved Thermal Tuning Efficiency
Granted: December 9, 2010
Application Number:
20100311195
A distributed Bragg reflector (DBR) includes a base substrate and a gain medium formed on the base substrate. A waveguide positioned above the base substrate in optical communication with the gain medium and defines a gap extending between the base substrate and the waveguide along a substantial portion of the length thereof. The waveguide may have a grating formed therein. A heating element is in thermal contact with the waveguide and electrically coupled to a controller configured to…
ELECTROMAGNETIC RADIATION CONTAINMENT IN AN OPTOELECTRONIC MODULE
Granted: November 25, 2010
Application Number:
20100296817
Electromagnetic radiation (EMR) containment assemblies for use in optoelectronic modules. In one example embodiment, an EMR containment assembly includes an EMR shield and a mounting spring plate attached to the EMR shield. The EMR shield includes a first substantially flat body defining at least one edge, a plurality of optical ports defined in the first body; and a plurality of fingers defined along at least one edge of the first body. The fingers are configured to bias against a…
DBR LASER WITH IMPROVED THERMAL TUNING EFFICIENCY
Granted: November 4, 2010
Application Number:
20100279447
A distributed Bragg reflector (DBR) includes a base substrate and a gain medium formed on the base substrate. A waveguide positioned above the base substrate in optical communication with the gain medium and defines a gap extending between the base substrate and the waveguide along a substantial portion of the length thereof. The waveguide having a grating formed therein. A heating element is in thermal contact with the waveguide and electrically coupled to a controller electrically…
PASSIVATED OPTICAL DETECTORS WITH FULL PROTECTION LAYER
Granted: October 14, 2010
Application Number:
20100258896
In one example, an optoelectronic transducer includes a first contact, a second contact, a passivation layer, and a protection layer. The passivation layer is formed on top of the first contact and the second contact and is configured to substantially minimize dark current in the optoelectronic transducer. The protection layer is formed on top of the passivation layer and substantially covers the passivation layer. The protection layer is configured to protect the passivation layer from…
EARLY SELF-VALIDATION OF PERSISTENT MEMORY DURING BOOT IN AN OPTICAL TRANSCEIVER
Granted: October 7, 2010
Application Number:
20100254710
An operational optical transceiver configured to self-validate a boot image loaded from the persistent memory early in the boot process. The optical transceiver includes a persistent memory, a controller, and a system memory. The controller initializes the boot process and begins to load information from the persistent memory to the system memory. Next, the controller detects early in the boot process boot image verification data in the information being sent to the system memory. The…
FEEDBACK CONTROL FOR HEATED TOSA
Granted: June 24, 2010
Application Number:
20100158057
A closed loop system for controlling laser temperature without the need for additional sensors or other hardware. Embodiments utilize an existing automatic power feedback loop and existing sensors to determine the temperature of a TOSA based on changes in laser bias current, thus avoiding the need for the additional hardware. The automatic power feedback loop will modify the laser bias current as the temperature of the TOSA changes. That is, as the temperature increases, the amount of…
THUMBSCREW FOR PLUGGABLE MODULES
Granted: June 17, 2010
Application Number:
20100149759
In one example, a pluggable module comprises a shell, a module connector, and one or more thumbscrews. The shell defines a cavity within which a PCB and one or more components are disposed and includes a front, back, first side, and second side. The module connector is operatively connected to the PCB near the back of the shell and extends from within the cavity to outside the shell through an opening defined in the back of the shell. The module connector is configured to operatively…
BAIL RELEASE MECHANISM FOR COMMUNICATIONS MODULE
Granted: June 10, 2010
Application Number:
20100142898
In one example, a bail release mechanism includes a bail and a de-latching member. The bail is configured to be attached to the shell of a module that includes a latch pin configured to engage a structure of a host device receptacle to secure the module within the receptacle. The bail is further configured to rotate about a first axis between a latched position and an unlatched position. The first axis is in a fixed position relative to the shell. The de-latching member is attached to…
ELECTROMAGNETIC SHIELDING CONFIGURATION
Granted: June 3, 2010
Application Number:
20100132999
An electromagnetic shielding configuration comprising a first electrically conductive wall having a first surface and a second electrically conductive wall having a second surface. The first surface is oppositely disposed from the second surface, wherein interfacing of the first conductive wall and the second conductive wall forms an enclosure wall. The first surface comprises at least one stepped edge forming a plurality of surfaces of unequal lateral displacement, and a corrugated…
Temperature Controlled Interferometer For Phase Demodulation
Granted: June 3, 2010
Application Number:
20100135677
An interferometer includes an optical beam splitter that splits an input optical signal into a first optical signal propagating in a first optical path comprising free space and a second optical signal propagating in a second optical path comprising a dielectric medium. A differential delay delays the second optical signal relative to the first optical signal by a differential delay time that is proportional to at least one of a temperature and a refractive index of the dielectric…
OPTICAL NETWORK UNIT TRANSCEIVER
Granted: May 27, 2010
Application Number:
20100129035
In one example embodiment, a pluggable ONU transceiver module comprises a top shell, a bottom shell configured to mate with the top shell to form a cavity, and a PCB disposed within the cavity. A plurality of pins are coupled to the PCB and are configured to be inserted into a protruding socket of a host device through the bottom shell. The protruding socket is mounted on a PCB of the host device. The pluggable ONU transceiver module further comprises one or more guiding features…
FLOATING FRONT ENCLOSURE FOR PLUGGABLE MODULE
Granted: May 20, 2010
Application Number:
20100124030
In one example embodiment, a host device includes a front panel, a bezel assembly, a floating PCB, and two host guides. The front panel defines an opening configured to receive a pluggable module in a plugging direction. The bezel assembly defines an opening configured to align with the front panel opening and to receive the pluggable module, the bezel assembly rigidly secured to the front panel. The host guides are rigidly secured to the floating PCB and are configured to guide the…
TRANSMISSION OF EYE INFORMATION FROM OPTO-ELECTRONIC MODULES
Granted: May 20, 2010
Application Number:
20100124418
A method of controlling communication between transceivers includes transmitting payload data from a transmitter of a first transceiver in a data channel of a physical link to a receiver of a second transceiver, the second transceiver further including an equalizer, varying equalizer settings in the equalizer, analyzing effects of varying equalizer settings to determine transmitter diagnostic settings for the first transceiver, and transmitting the transmitter diagnostic settings from a…
USE OF VCSEL TO DETECT PAPER IN A PRINTER
Granted: May 6, 2010
Application Number:
20100110137
A method of detecting the properties of a printing target in a printing apparatus capable of performing a recording process on the printing target. The method uses a vertical cavity surface emitting laser disposed in the printing apparatus and comprises transporting the printing target through the printing apparatus, emitting a wavelength modulated optical signal toward the printing target using the vertical cavity surface emitting laser, receiving a reflection of the wavelength…
TRANSCEIVER MODULE AND INTEGRATED CIRCUIT WITH DUAL EYE OPENERS
Granted: May 6, 2010
Application Number:
20100111539
A transceiver module having integrated eye diagram opening functionality for reducing jitter is described. The transceiver module may include a transmitter eye opener and a receiver eye opener integrated in a single circuit. The transceiver module may also include serial control and various other integrated components. Other functionalities that may be integrated on the transceiver module include loopback modes, bypass features, bit error rate testing, and power down modes.
COMMUNICATION MODULE GROUND CONTACT
Granted: May 6, 2010
Application Number:
20100112861
A transceiver module that utilizes a side contact spring portion to ground a shielded cable that is plugged into the transceiver module. In one example embodiment, a transceiver module includes a housing, a jack, and a side contact spring portion. The housing is operative to be electrically connected to chassis ground when the transceiver module is received within a host port. The jack is defined in the housing and operative to receive a shielded plug. The side contact spring portion is…
SERIALIZER/DESERIALIZER TEST MODES
Granted: April 22, 2010
Application Number:
20100097942
Serializer, deserializer, and/or serdes ICs are configured to support one or more test modes to enable end-to-end testing in communication links in which the ICs are implemented. To support the end-to-end testing, the ICs can include a multiplexing stage with means for deterministically mapping a plurality of input parallel data signals to at least one output serial data signal and/or a demultiplexing stage with means for deterministically mapping at least one input serial data signal to…
EMI SHROUD FOR A PLASTIC RECEIVE OPTICAL SUBASSEMBLY
Granted: April 22, 2010
Application Number:
20100098427
The principles of the present invention provide for a plastic ROSA that has a metallic EMI shroud covering a portion of the plastic ROSA. The combination of the plastic ROSA and the EMI shroud provides the unexpected result of having EMI shielding substantially similar to a metal ROSA.
