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.

Temperature stabilizing packaging for optoelectronic components in a transmitter module

Abstract: An optical transmitter is disclosed having a temperature stabilization system for an optical filter for maintaining constant the frequency response of the filter. The filter is mounted within a housing having a substantially higher thermal conductivity. The housing may include a copper-tungsten alloy and extend along the optical axis of the filter. The housing is in thermal contact with a thermo-electric cooler (TEC) and a temperature sensor. The TEC and temperature sensor are electrically coupled to a controller which adjusts the temperature of the TEC according to the output of the temperature sensor.

Surface coupled systems

Abstract: A system includes a surface coupled edge emitting laser (212) that includes a core waveguide, a fan out region optically coupled to the core waveguide in a same layer of the surface coupled edge emitting laser as the core waveguide; and a first surface grating (206) formed in the fan out region; and a photonic integrated circuit (PIC) that includes an optical waveguide and a second surface grating formed in an upper layer of the PIC, wherein the second surface grating is in optical alignment with the first surface grating. Due to the tapered shape of the fan out grating (206) alignment requirements between the laser chip and the PIC are reduced.

100GbE- Optical LAN Technologies [Applications & Practice]

Abstract: This article discusses optical and IC technologies feasible for use in the development of LAN interfaces based on future IEEE 100-gigabit Ethernet SMF and MMF standards. SMF approaches using 10-Gb/s and 25-Gb/s WDM, and DWDM WAN technologies are outlined, with the 25-Gb/s approach examined in detail. The MMF approach using 10-Gb/s parallel optics technology is also examined in detail. Future technologies required for high-volume, low-cost 100 Gb/s are previewed.

Digital video interface

Abstract: A circuit includes a first interface to receive a plurality of data streams from a plurality of signal inputs, a multiplexer to interleave the plurality of data streams into a serial data stream, and an output driver, including pre-emphasis circuitry, to transmit the serial data stream on a first output. The plurality of data streams may correspond to digital video. The plurality of data streams may be encoded using transition-minimized differential signaling. The first output may be configured to couple to a cable to convey electrical signals.