Optical transmitter and optical transmission system

Details Optical transmitter and optical transmission system Optical transmitter and optical transmission system

2007-07-23

2010-06-08

Li, Shi K (Department: 2613)

Optical communications

Transmitter and receiver system

C398S185000

Reexamination Certificate

active

07734185

ABSTRACT:
An optical SSB-SC modulation section13subjects an optical signal fa outputted from an optical source11to an optical SSB-SC modulation based on the amplitude of an external electric signal fc to thereby output an optical intensity-modulated signal. An optical phase modulation section14subjects the optical signal fa to an optical phase modulation based on the amplitude levels of the first to nthexternal electric signals having frequencies f1to fn to thereby output the resultant signal as an optical phase-modulated signal. An optical combining section15combines together the optical intensity-modulated signal and the optical phase-modulated signal. An optical detecting section16performs an optical homodyne detection through a squared detection of the optical intensity-modulated signal and the optical phase-modulated signal combined together to thereby produce a wideband modulated signal, being the difference beat signal between the two optical signals. A combining section17combines together the wideband modulated signal and the othto tthelectric signals having frequencies fo to ft to thereby output the resultant signal as a wideband modulated signal.

REFERENCES:
patent: 2007/0019968 (2007-01-01), Hashimoto et al.
patent: 2001-133824 (2001-05-01), None
patent: 2006-049977 (2006-02-01), None
patent: 2006-287410 (2006-10-01), None

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