Direct modulation phase shift keying (DM-PSK) transmission syste

Details Direct modulation phase shift keying (DM-PSK) transmission syste Direct modulation phase shift keying (DM-PSK) transmission syste

1991-07-15

1993-07-13

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

359183, 359187, 372 26, H01S 310, H04B 1000

Patent

active

052280438

ABSTRACT:
A direct modulation phase shift keying transmission system (DM-PSK transmission system) is disclosed for coherent optical fiber transmission in which an injection current supplied to a semiconductor laser is adapted to be directly modulated. This system presents useful features in automatic frequency control, demodulation, and phase noise suppression.

REFERENCES:
patent: 4805235 (1989-02-01), Henmi
patent: 5050176 (1991-09-01), Naito et al.
patent: 5077619 (1991-12-01), Toms

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