Bidirectional optical wavelength multiplexer-demultiplexer
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United States of America Patent
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-
Nov 24, 1987
Grant Date -
N/A
app pub date -
Oct 9, 1984
filing date -
Oct 11, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bidirectional optical wavelength multiplexing-demultiplexing device comprises a self-focusing lens having an index gradient and situated between the transmission fibre and filtering means and of which the length is such that the spatial separation between the outgoing wavelengths and the return wavelength is maximum, which permits decoupling of the return channel from the outgoing channels.
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