Control unit for optical modulators producing multiplexed optica

Details Control unit for optical modulators producing multiplexed optica Control unit for optical modulators producing multiplexed optica

1996-09-11

1998-09-08

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359124, 359161, 359181, H04J 1408, H04J 1402

Patent

active

058053212

ABSTRACT:
A control unit for controlling an optically modulating apparatus in an optical transmitter, including plural optical modulators producing an optical output signal consisting of a series of optical pulses for transmitting data under OTDM or WDM, so that pre-chirping magnitudes of the modulators are changed together with drift compensation, for preventing waveform deterioration due to an optical transmission line from occurring. The pre-chirping magnitudes are changed by shifting operating points of modulators only concerning pre-chirping, without affecting other transmitting characteristics of the optical output signal.

REFERENCES:
patent: 5170274 (1992-12-01), Kuwata et al.
patent: 5394261 (1995-02-01), Nakamura
patent: 5491576 (1996-02-01), Bergano

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