Compressed channel spacing for optical heterodyne communication

Details Compressed channel spacing for optical heterodyne communication Compressed channel spacing for optical heterodyne communication

1991-02-12

1995-02-14

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359189, H04B 1006

Patent

active

053900430

ABSTRACT:
In an optical heterodyne communication system for transmission of multiple optical channels at different wavelenths, the optical channels are grouped into blocks for increased utilization of the available bandwidth. The spacing between optical channels within a block is typically equal to or somewhat greater than the channel bandwidth. The spacing between blocks is such that when the optical signal is heterodyned with a local oscillator lightwave, the interference with a selected optical channel from adjacent blocks does not exceed a predetermined level.

REFERENCES:
patent: 4777664 (1988-10-01), Ishoe
patent: 4893352 (1990-01-01), Welford

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