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Proceedings Paper

Optical decoding and coherent detection of a four-level FSK signal
Author(s): Vincent A. O'Byrne; Timothy Tatlock; Samuel M. Stone
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Paper Abstract

A novel 4 level FSK technique for halving the number of transmitter lasers in a multichannel FSK system is described. This is accomplished by appropriately coding two independent binary signals into a 4 level FSK signal pnor to transmission. At the receiver the local oscillator optically decodes the signal prior to envelope detection. This scheme maintains the simplicity of a binary envelope detector and results in no system performance degradation over binary FSK.

Paper Details

Date Published: 1 January 1991
PDF: 6 pages
Proc. SPIE 1372, Coherent Lightwave Communications: Fifth in a Series, (1 January 1991); doi: 10.1117/12.24912
Show Author Affiliations
Vincent A. O'Byrne, GTE Labs. Inc. (United States)
Timothy Tatlock, GTE Labs. Inc. (United States)
Samuel M. Stone, GTE Labs. Inc. (United States)


Published in SPIE Proceedings Vol. 1372:
Coherent Lightwave Communications: Fifth in a Series
Harish R. Sunak; Roger C. Steele, Editor(s)

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