Optical fiber communication for local area networks with frequency-division-multiplexing
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United States of America Patent
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Oct 4, 1988
Grant Date -
N/A
app pub date -
May 10, 1985
filing date -
May 10, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and associated system for providing multi-channel transmission of digital and broadband video information in optical fiber communication for local area networks through frequency-division-multiplexing, comprising the steps of generating a plurality of closely spaced optical carrier wave pairs with the optical carrier waves within each optical carrier wave pair having a predetermined separation frequency between one another, assigning each of the plurality of optical carrier wave pairs to a predetermined frequency slot and optically combining the plurality of optical carrier wave pairs to provide a multiplexed optical output wave. Advantageously, in addition to direct detection the plurality of optical carrier wave pairs may be detected by opto-electronic heterodyne detection and/or incoherent optical-heterodyne detection to electronically recover the optical carrier wave pairs.
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