Duobinary optical transmitter

Details Duobinary optical transmitter Duobinary optical transmitter

2007-10-02

2007-10-02

Leung, Christina (Department: 2613)

Optical communications

Transmitter

Having particular modulation

C398S184000, C398S188000

Reexamination Certificate

active

10862251

ABSTRACT:
An optical transmitter for generating an optical signal includes: a precoder for coding an electrical signal of binary data; a continuous-wave (CW) light source for generating a continuous wave light; an optical phase modulator for modulating the phase of an optical signal outputted from the CW light source according to an electrical signal outputted from the precoder; a birefrigent material for bi-refracting a signal outputted from the optical phase modulator and for outputting the bi-refracted signal; and a polarizer for permitting only optical signals of a specific polarization direction to transmit therethrough when optical signals outputted from the birefrigent material are applied.

REFERENCES:
patent: 6646774 (2003-11-01), Willner et al.
patent: 2002/0101639 (2002-08-01), Yano
patent: 2002/0196508 (2002-12-01), Wei et al.
patent: 2003/0002121 (2003-01-01), Miyamoto et al.
patent: 0825733 (1998-02-01), None
patent: 0964538 (1999-12-01), None
“Dispersion-Tolerant Transmission Using a Duobinary Polarization-Shift Keying Transmission Scheme;” A Shamim Siddiqui et al.; IEEE Photonics Technology Letters, vol. 14, No. 2; Feb. 2002; XP001123175; 2 pgs.

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