Finisar

About: Finisar is a company organization based out in Sunnyvale, California, United States. It is known for research contribution in the topics: Signal & Laser. The organization has 900 authors who have published 1523 publications receiving 22634 citations.

Modular optical devices compatible with legacy form factors

Abstract: The present invention relates to modular optical devices compatible with legacy form factors, for example, SFF, SFP, and XFP form factors. A housing contains optical components including a lens block, a fabricated package, at least one lens pin, and a substrate. The lens block is configured to receive one or more lens pins. The fabricated package is mechanically coupled to the lens block and includes a light source and/or a light detector and a connector for coupling the fabricated package to the substrate. The at least one lens pin is mechanically coupled to the lens block for directing optical signals between the light source and/or light detector and external components. The substrate is mechanically coupled to the fabricated package and the housing and electrically connected to the light source and/or light detector such that substrate circuitry can electrically interoperate with the light source and/or light detector.

Method and apparatus for an optical multiplexer and demultiplexer with an optical processing loop

Abstract: An optical device that can be used in a range of telecommunications applications including optical multiplexers/demultiplexers and optical routers. The optical device includes an optical processing loop which allows mufti-stage performance characteristics to be achieved with a single physical filtration stage. Optical processing on the first leg and second legs of the loop is asymmetrical thereby improving the integrity of the optical signals by effecting complementary chromatic dispersion on the first and second legs. In an embodiment of the invention the optical device includes a fundamental filter cell, a retro reflector and a sputter/combiner. The fundamental filter cell filters optical signals propagating on each of two legs of an optical loop which intersects the fundamental filter cell. The fundamental filter cell operates as a full waveplate to the odd set of channels and a half waveplate to the even set of channels on a selected one of the two legs and as a half waveplate to the odd set of channels and a full waveplate to the even set of channels on a remaining one of the two legs. The retro reflector optically couples with the fundamental filter cell to reflect the optical signals from one of the two legs to an other of the two legs to form the optical loop. The sputter/combiner optically couples between the fundamental filter cell and the retro reflector to split or combine the odd set of channels and the even set of channels depending on the propagation direction of the optical signals along the optical loop.

Interface architecture for facilitating communication regardless of protocol

Abstract: An architecture and method in an integrated circuit for configuring a controller to facilitate communication with a plurality of external device interfaces. The integrated circuit includes a processor, a first memory, a second memory, including a plurality of dedicated memory blocks containing configuration data, and a plurality of external device interfaces. The processor is configured to write a microcode instruction to the first memory. The controller is configured to read the microcode instruction in the first memory and as a result access one of the plurality of dedicated memory blocks. Next, the controller processes the configuration data in the dedicated memory block according to the microcode instruction. As a result, the controller is configured to communicate with one of the plurality of external device interfaces. This process may be repeated as needed to configure the controller to communicate with different device interfaces using different communication protocols.

Optical transceiver with off-transceiver logging mechanism

Abstract: A mechanism for an optical transceiver to log information about its operational parameters to an off transceiver host computing system (hereinafter referred to simply as a “host”). The optical transceiver may be communicatively coupled to the host. The optical transceiver is configured to identify operational information regarding itself. The operational information may include statistical data about operation, or may include measured parameters. The optical transceiver may log the information to the memory of the host in an off transceiver logging operation.

Sampling a device bus

Abstract: 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.