Wideband Electronics for High Speed Digital Laser Communications.
Abstract
This report describes the design and development of the high speed data handling electronics for a mode locked laser communications system. The electronics consist of a transmitter electronics and a receiver electronics package. The transmitter electronics accepts up to four channels of video, analog multiplexes the video onto a single line, interfaces with a 6-bit 50 Ms/s A/D converter, adds digital sync information, multiplexes the digital data into a serial stream, and interfaces the data to a mode locked laser modulator at 200 or 300 Mb/s. The receiver electronics accepts the detected 1 mV, 0.5 nsec triangular pulse output of the laser receiver, performs bit synchronization, digital demultiplexing, automatic sync acquisition, and D/A conversion, thereby reproducing the four video streams. A bit error checker and counter are incorporated into the receiver electronics to allow bit error rate tests to be run on the link. Tests were run on a simulated laser link. A reliability study was performed to assess the potential reliability of this type of equipment when designed for space or controlled environment ground use. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1972
- Accession Number
- AD0902097
Entities
People
- G. Aucoin
- J. Huang
- R. Asato
- R. Earhart
- T. J. Johnson
Organizations
- TRW Inc.