Optical modulating device and optical modulating method

Details Optical modulating device and optical modulating method Optical modulating device and optical modulating method

1997-03-31

1999-07-20

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359115, 359135, 359158, 359181, 359187, 359177, H04J 1400, H04B 1004, H04B 1002, H04B 1000

Patent

active

059262974

ABSTRACT:
An optical modulating method and an optical modulating device for optical time division multiplexing (OTDM). The optical modulating device comprises, for example, an optical switch for generating first and second optical clocks according to a carrier beam output from a light source, optical modulators for respectively switching on/off the optical clocks by data signals to thereby generate first and second signal beams, an optical multiplexer for combining the signal beams to generate an OTDM signal, and prechirp circuit for controlling, for example, the optical clocks so that the OTDM signal has a chirp parameter adapted to an optical transmission line. This optical modulation device is suitable for high-speed transmission and allows chromatic compensation.

REFERENCES:
patent: 5020872 (1991-06-01), DuPuy et al.
patent: 5522004 (1996-05-01), Djupsjobacka et al.
patent: 5726789 (1998-03-01), Horiuchi et al.
patent: 5805328 (1998-09-01), Satoh et al.

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