Optical waveguides – With optical coupler – Particular coupling structure
Patent
1991-08-07
1992-08-18
Epps, Georgia Y.
Optical waveguides
With optical coupler
Particular coupling structure
385 42, 385 43, 385 44, 385 47, G02B 628
Patent
active
051406551
ABSTRACT:
An M.times.N optical star coupler is disclosed which utilizes fiber amplifier technology to provide amplification of message signals. The input signals to the star comprise at least one message signal and at least one pump signal. The message signals and pump signals combine in an amplifier coupling region to form as an output the amplified message signals. The amplified message signals are then coupled into the plurality of N output waveguides. In one embodiment, a plurality of fiber amplifiers are coupled in a one-to-one relationship to the plurality of output waveguides. Since the amplifier is reciprocal in nature, the star may be utilized as a bidirectional device. The couplers may also be connected together to form a cascaded arrangement capable of providing re-amplification of the message signals.
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AT&T Bell Laboratories
Epps Georgia Y.
Koba Wendy W.
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