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Proceedings Paper

Three Channel Transmission Through A Single Optical Fiber By Polarization Multiplexing
Author(s): C. Herard; A. Lacourt
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Paper Abstract

We propose a multiplexing process based on polarized light and which gains distinction from other systems based on polarization by the number of channels that it allows to transmit: three radio-frequence (RF) distinct signals instead of two can indeed circulate inside a single optical fiber and be then simultaneously detected. In fact, the RF signals to transmit (made up in our experiment of video signals) modulate monochromatic plane lightwaves linearly polarized along directions of vibration oriented at 60° from each other. Light is injected in a single-mode fiber a few meters long. At the output, after division in amplitude and crossing through three suitably oriented analyzers, we collect three light beams whose values are known linear combinations of original signals. So it is possible to retrieve the original signals by electronic inversion of a matrix. The use of a single-mode fiber is necessary in order to preserve as much as possible the state of polarization. We present the results obtained by means of curves and TV pictures and we emphasize the advantage of such a process in high data rate transmission on short and medium distance.

Paper Details

Date Published: 18 September 1987
PDF: 7 pages
Proc. SPIE 0810, Optical Systems for Space Applications, (18 September 1987); doi: 10.1117/12.941552
Show Author Affiliations
C. Herard, Universite de Franche-Comte (France)
A. Lacourt, Universite de Franche-Comte (France)


Published in SPIE Proceedings Vol. 0810:
Optical Systems for Space Applications
Hanspeter Lutz; Georges Otrio, Editor(s)

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