Optical communication system

Details Optical communication system Optical communication system

2005-02-15

2005-02-15

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

Harmonic generator

C359S332000

Reexamination Certificate

active

06856451

ABSTRACT:
An optical communication system is designed to suppress the generation of cross talk even in the case of small wavelength spacing and high bit-rate modulation. An Nth order harmonic generating device where N is an integer of 2 or larger is positioned before a demultiplexer to upconver the frequency or down convert the wavetlength of the light wave by N times. The frequency spacing between the carriers is increased and allows easier separation of the optical signal and permits denser WDM channels and/or higher data rate per channel. In addition, Si or GaAs based photodiodes may be used instead of InP based photodiodes since the 1550 nm bands are converted to 780 nm bands.

REFERENCES:
patent: 04107535 (1992-04-01), None

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