Optical demultiplexer filter system to eliminate cross-talk side

Details Optical demultiplexer filter system to eliminate cross-talk side Optical demultiplexer filter system to eliminate cross-talk side

1998-03-09

2000-04-18

Lee, John D.

Optical waveguides

With optical coupler

Plural

359127, G02B 6293

Patent

active

060524995

ABSTRACT:
Optical amplifiers are typically disposed along the transmission path of an optical system. If a large number of optical amplifiers, e.g., eight, are so disposed, then it is likely that an appreciable level of so-called power divergence will occur among the optical signals forming a composite optical signal that traverses the path. Disadvantageously, when the composite signal is received at a destination and demultiplexed, a number of the demultiplexed optical signals will contain components of the other demultiplexed optical signals as a result of such power divergence. This problem is readily handled using a facility which greatly suppresses such components in a demultiplexed optical signal.

REFERENCES:
patent: 5035481 (1991-07-01), Mollenauer
patent: 5136671 (1992-08-01), Dragone
patent: 5668900 (1997-09-01), Little et al.
patent: 5710849 (1998-01-01), Little et al.
patent: 5777793 (1998-07-01), Little et al.

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