Control system for a polar optical transmitter

Details Control system for a polar optical transmitter Control system for a polar optical transmitter

2010-07-06

2011-11-15

Bello, Agustin (Department: 2613)

Optical communications

Transmitter

Including compensation

C398S182000, C398S183000

Reexamination Certificate

active

08059970

ABSTRACT:
A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which defines a relationship between a control parameter of the optical transmitter and a power level of an output optical signal generated by the MZ modulator. A selected component of the electrical drive signals is dithered using a predetermined dither signal. A modulation depth of the output optical signal power level corresponding to the dither signal is detected, and the control parameter adjusted based on the cost function and the detection result.

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