Optical data transmitting apparatus and method

Details Optical data transmitting apparatus and method Optical data transmitting apparatus and method

2005-07-05

2005-07-05

Sedighian, M. R. (Department: 2633)

Optical communications

Transmitter

Having particular modulation

C398S184000

Reexamination Certificate

active

06915082

ABSTRACT:
An optical data transmitting apparatus and method allows data transmission over a distance that surpasses a limit, which has been imposed due to group velocity dispersion (GVD) and self phase modulation (SPM) effect within optical fiber. This has been accomplished by allocating trinal duobinary symbols to optical 1, P, −1 symbols. These optical symbols have the same intensity, +1 and −1 symbols have inverted optical phases each other, and orthogonally polarized each other between ±1 and P symbols. At the receiver, conventional polarization shift keying receiver can be used to restore original binary data stream.

REFERENCES:
patent: 3752992 (1973-08-01), Fluhr
patent: 5459600 (1995-10-01), Davis et al.

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