Optical Sources for Coherent Optical Fiber Communication Systems

Richard S. Vodhanel

doi:10.1117/12.949848

31 October 1985 Optical Sources for Coherent Optical Fiber Communication Systems

Richard S. Vodhanel

Proceedings Volume 0568, Coherent Technology in Fiber Optic Systems I; (1985) https://doi.org/10.1117/12.949848
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

This paper reports recent progress in the development of three categories of optical sources with linewidths, Ay, sufficiently narrow to be used in heterodyne and homodyne optical fiber communication systems: First, single-longitudinal-mode semiconductor lasers with relatively broad linewidths of several tens of MHz, suitable for amplitude-shift-keying and frequency-shift-keying heterodyne with envelope detection. Second, semi-conductor lasers with weak optical feedback having Lv = 1 MHz. Such narrow linewidth sources would be required for differential-phase-shift-keying heterodyne detection. Third, semiconductor lasers with strong optical feedback, and 1523 nm He-Ne lasers, both having Av , ▵ν≤15kHz ,Such very narrow linewidth sources would be required for PSK homodyne detection.

Citation Download Citation

Richard S. Vodhanel "Optical Sources for Coherent Optical Fiber Communication Systems", Proc. SPIE 0568, Coherent Technology in Fiber Optic Systems I, (31 October 1985); https://doi.org/10.1117/12.949848

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