Optical telecommunications system employing multiple phase-compe

Details Optical telecommunications system employing multiple phase-compe Optical telecommunications system employing multiple phase-compe

1995-10-12

1997-02-25

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359115, 359127, 359122, 385124, 385 14, 356345, H04B 1012

Patent

active

056064462

ABSTRACT:
Optical telecommunication systems using phase-compensation interferometry wherein receiver units have N interferometer configurations each with a unique path length difference that is identical to a path length difference in one of N interferometer configurations at the corresponding transmitter units. The transmitter and receiver units separately and individually use N+1 arms, one of which serves as a reference common to the other N arms that along with the common reference arm form the N interferometer configurations of the transmitter and receiver units. N phase modulators, one in each of the N paths of the transmission units, are used to apply a separate and individual telecommunication signal (payload) to the portion of the light in that path. These N separate payloads may be of the same or different protocols. These N separate payloads may have the same or different bit rate/second. These N separate payloads may be digital or analog. These N payloads may be individually and separately dropped out or inserted at a drop/insert site. These N separate payloads may be used to increase the capacity of a transmission path by a factor of up to N. These N separate payloads may be used to employ lower bit rate/second electrons to produce a higher bit rate/second payload where the increased in bit rate/second is a factor of up to N.

REFERENCES:
patent: 4860279 (1989-08-01), Falk et al.
patent: 4882775 (1989-11-01), Coleman
patent: 5063559 (1991-11-01), Marcuse
patent: 5459600 (1995-10-01), Davis et al.

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