Bidirectional optical fiber transmission system

Details Bidirectional optical fiber transmission system Bidirectional optical fiber transmission system

1979-08-09

1981-09-15

Levy, Stewart J.

G02B 514

Patent

active

042893739

ABSTRACT:
There is disclosed a bidirectional optical fiber transmission system. This system includes first and second light transmitter-receiver sets and a single strand of optical fibers. The light transmitter-receiver sets each comprise (a) a light receiver, (b) a light transmitter whose light source is a light emitting diode, and (c) means to isolate downstream and upstream light from each other. The optical fibers connect the light-transmitter-receiver sets through the light isolating means. The emission spectra of the light emitting diodes at least partly overlap each other and the isolating means have wavelength pass bands which do not substantially overlap each other.

REFERENCES:
Minemura et al., "Two-way Transmission Experiments Over a Single Optical Fibre at the Same Wavelength Using Micro-Optic 3dB Couplers", in Electronics Letts., vol. 14, No. 11, May 1978, pp. 340-342.
Usui et al., "Three-way Optical Directional Coupler", article Nippon Electric Company Ltd., Mar. 1978.
Kobayashi et al., "Micro Optics Devices for Branching, Coupling, Multiplexing", from Int. Conf. on Integrated & Optical Fiber Comm., 1977, paper B11-3.

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