Optical transmitting device

Details Optical transmitting device Optical transmitting device

2007-07-17

2007-07-17

Tran, Dzung (Department: 2613)

Optical communications

Transmitter

Including compensation

C398S188000, C398S199000

Reexamination Certificate

active

10368346

ABSTRACT:
A demultiplex unit demultiplexes the optical output of a Mach-Zehnder optical modulator and inputs the demultiplexed optical output to a wavelength detection unit. The wavelength detection unit detects the wavelength deviations in the ascending or descending part of the optical signal and inputs the wavelength deviations to a detection unit. The detection unit detects the sign and magnitude of chirping in the magnitude of wavelength deviation and inputs the sign and magnitude of chirping to a driving voltage control unit. The driving voltage control unit compares the detected sign and amount of chirping with the target sign and magnitude of chirping, and a driving voltage generation circuit provides the Mach-Zehnder optical modulator with a suitable driving voltage.

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Japanese Office Action, dated Jul. 25, 2006 along with Notice of Rejection.
Japanese Patent Office Notice of Rejection Grounds, mailed Jan. 30, 2007, and issued in priority Japanese Patent Application No. 2002-236941.

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