Passive Network Tap With Digital Signal Processing for Separating Signals
Granted: January 17, 2008
Application Number:
20080013467
A passive full-duplex bidirectional ZPL tap includes first and second network ports and tap ports. A signal separator is configured to receive a data stream from at least one of the first or second network ports and pass through the data stream and configured to obtain a first signal portion comprising at least the first signal component and obtain a second signal portion comprising at least the second signal component. A DSP stage is configured to substantially remove any second data…
Receive Only Physical Interface Device IC Used In A Passive Network Tap
Granted: January 17, 2008
Application Number:
20080014879
A receive or listen only Physical Interface Device (Phy). The receive or listen only Phy is configured to have a front end configured to only receive data from a communications network. The receive only Phy may be implemented a part of a tap device including a first network port for receiving a first network signal having a first format; a receive only Phy for converting the first network signal into a second signal format; and a transmit and receive Phy for receiving the first network…
IDENTIFYING AND RESOLVING PROBLEMS IN WIRELESS DEVICE CONFIGURATIONS
Granted: January 17, 2008
Application Number:
20080013463
Systems and methods for identifying and resolving problems in wireless device configurations in a wireless network. In one example embodiment, a method for resolving wireless device configuration problems includes various acts including identifying all wireless devices that are wired to a network, retrieving configuration information from each wireless device, retrieving wireless device incompatibility information and corresponding configuration solutions for each wireless device,…
METHOD AND APPARATUS FOR MONITORING THE POWER LEVEL OF TWO OR MORE OPTICAL TRANSMITTERS
Granted: January 10, 2008
Application Number:
20080008065
Methods and apparatus for monitoring the power level of one or more optical emitters are provided. In some embodiments, optical signals from two or more optical emitters are directed at different regions of a photo detector. The photo detector may include two or more spaced contacts that are adapted to receive different contributions of photo current from each of the optical signals. By monitoring the photo currents in the two or more spaced contacts, a measure of the optical power of…
CONTROL CIRCUIT FOR OPTOELECTRONIC MODULE WITH INTEGRATED TEMPERATURE CONTROL
Granted: December 27, 2007
Application Number:
20070297468
A microprocessor is used to control the temperature of a laser emitter and thereby regulate the wavelength of optical signals from the laser. A serial interface in the microprocessor provides input and output lines to a host device, and temperature lookup tables are stored in nonvolatile memory. Control logic processes information stored in the memory as well as information on operating conditions of the laser emitter to precisely control the temperature of the laser emitter. A…
LOW INDUCTANCE OPTICAL TRANSMITTER SUBMOUNT ASSEMBLY
Granted: December 20, 2007
Application Number:
20070289764
A low inductance structure for improving the integrity of data signals carried in an optical subassembly is disclosed. In one embodiment the optical subassembly comprises a housing containing a lens assembly and an optical isolator. The optical subassembly further includes an optoelectronic package having a base defining a mounting surface that cooperates with a cap to define a hermetic enclosure. First and second signal leads of the subassembly include ends that extend into the hermetic…
OPTICAL NETWORK TEST ACCESS POINT DEVICE
Granted: December 6, 2007
Application Number:
20070280591
An optical network test access point (“TAP”) device. In one example embodiment, an optical network TAP device includes a printed circuit board and a plurality of optical receiver modules. The printed circuit board includes a microprocessor, a multiplexer connected to the microprocessor, and a plurality of post amplifiers connected to the multiplexer. Each optical receiver module includes one or more ROSAs. Each ROSA is connected to the multiplexer through one of the plurality of post…
OPTICAL MODULE FOR A HOST OPTICAL DEVICE
Granted: December 6, 2007
Application Number:
20070280606
Optical modules for use with a host system. In one example embodiment, a method for tapping an optical network includes connecting one or more optical modules to a host device, providing one or more post amplifiers, and controlling each of the one or more optical modules and the one or more post amplifiers with a microprocessor that is integrated with the host device. In this example method, the one or more optical modules include at least one optical module with a plurality of ROSAs and…
SYSTEM AND METHOD FOR TRANSMITTING DATA ON RETURN PATH OF A CABLE TELEVISION SYSTEM
Granted: November 29, 2007
Application Number:
20070277213
An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined…
BIDIRECTIONAL LENS PRESSING SYSTEM
Granted: November 29, 2007
Application Number:
20070272093
A bidirectional lens pressing system for use in pressing a lens into a port housing is disclosed. The lens pressing system includes a frame that supports a top motor stage, a bottom motor stage, and an indexing stage. The indexing stage is interposed between the top and bottom motor stages and includes a hole that retains a port housing or other component. The top pressing tool is selectively movable in a first direction by the top motor stage and includes a first engagement surface for…
SYSTEMS, DEVICES AND METHODS FOR THERMAL TESTING OF AN OPTOELECTRONIC MODULE
Granted: November 29, 2007
Application Number:
20070272041
Devices, systems and methods for thermal testing of optoelectronic modules are disclosed. The device includes a frame member, a thermoelectric cooler, a plate in thermal contact with the DUT, a heat sink in thermal contact with the frame, and a metallic clip for attaching the thermal testing device to the module (DUT). The clip secures the thermoelectric cooler to the DUT. The method includes the steps of providing a testing apparatus having a printed circuit board with a test circuit…
HIGH-TEMPERATURE OPERATION OF VERTICAL CAVITY SURFACE EMITTING LASERS
Granted: November 22, 2007
Application Number:
20070268943
Embodiments of the present invention provide a system for increasing an operational life of a VCSEL. The system can include control circuitry for reducing an amount of bias current at high temperatures and increasing a power of the laser at low temperatures. This control circuitry can further include at least one of a temperature sensor, a Field Programmable Gate Array, a read only memory module, and an electrically erasable programmable read only memory module (EEPROM). In alternate…
SEMICONDUCTOR LASER WITH SIDE MODE SUPPRESSION
Granted: November 15, 2007
Application Number:
20070263688
Systems and methods for stripping an optical mode from a semiconductor laser. A waveguide layer with multiple layers is included in the semiconductor laser and is typically arranged beneath the active region. The waveguide layer is configured to match the phase of the second order mode. The waveguide layer does not substantially match the primary optical mode of the laser. By matching the phase of the second order mode, the confinement of the second order mode is reduced and the second…
INTEGRATED LIGHT EMITTING DEVICE AND PHOTODIODE WITH OHMIC CONTACT
Granted: November 15, 2007
Application Number:
20070264805
Optoelectronic device including integrated light emitting device and photodiode. The optoelectronic device includes a light emitting device such as a vertical cavity surface emitting laser (VCSEL) or resonant cavity light emitting diode (RCLED). A photodiode is also included in the optoelectronic device. Between the light emitting device and the photodiode is a transition region. At least part of the transition region is shorted. A metal contact provides a contact to both the light…
TAP BOARD
Granted: November 15, 2007
Application Number:
20070266182
A protocol analyzer for analyzing traffic on a bus. A tap card is used to tap into a bidirectional bus. The tap provides a pass through connection from the card to the host and taps off of the bus. While tapping off the bus, stubs lengths are minimized and input capacitance is minimized. A repeater that preferably has no internal termination provides a differential input and a differential output or a single ended output. The bus lines are input to one of the inputs in the differential…
SAMPLING A DEVICE BUS
Granted: November 15, 2007
Application Number:
20070266183
A method for preparing tapped data for analysis. The data on a bus is sampled and latched at a certain rate to produce raw data. The raw data is then decoded by a pod that is configured for the protocol of the bus in a system under test. The decoded data can then be presented to a protocol analyzer for analysis. The decoded data and the corresponding raw data may also be aligned and then presented to an analyzer for protocol analysis.
SYSTEMS AND METHODS FOR GENERATING NETWORK DIAGNOSTIC STATISTICS
Granted: November 8, 2007
Application Number:
20070260728
A network diagnostic system may include a statistics module. The statistics module may include a plurality of stages and may include stage-transition code. The stage-transition code may be used to help maintain one or more network diagnostic statistics. The statistics module may be implemented using a network processor unit, and the network processor unit may include a plurality of stages and may include stage-transition code. To help maintain one or more network diagnostic statistics,…
TAPPING A MEMORY CARD
Granted: November 8, 2007
Application Number:
20070260800
A protocol analyzer for analyzing traffic on a bus. A system includes a tap, a pod and an analyzer. The tap includes differential inputs for the bus. One of the differential inputs is a line from the bus and the other is a reference input that has been divided. The reference input enables the system to determine whether data on the bus is high or low even in situations where the operating voltage of the bus is unknown.
SHAPED LEAD ASSEMBLY FOR OPTOELECTRONIC DEVICES
Granted: November 1, 2007
Application Number:
20070251087
An optoelectronic package is attached to a printed circuit board, in which optoelectronic package has a shaped lead configuration. The lead configuration enables the shaped leads to electrically connect with through-hole vias defined in a printed circuit board while minimizing space requirements and providing stress relief for the leads. In one embodiment, an optical subassembly is disclosed, comprising a header containing optoelectronic components, and a plurality of conductive leads…
Passive Network Tap With Bidirectional Coupler and Associated Splitting Methods
Granted: November 1, 2007
Application Number:
20070253349
The principles of the present invention relate to passive full-duplex bidirectional Zero Packet Loss (ZPL) network taps that include single, dual, or dual differential couplers that are placed in the communication path between two network devices that communicate using a full-duplex bidirectional data stream that include a first and a second data component. The bidirectional couplers are configured to at least partially obtain a second data stream that includes at least the first data…
