Controlling laser optical output signal impulse response in an optical transmitter

The impulse response of the optical output of a laser 104 of an optical transmitter 100 is adaptively adjusted in a way that ensures that the optical waveform being transmitted from the optical transmitter into the optical waveguide of an optical link has a desired waveform shape that improves the p...

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Bibliographic Details
Main Authors FREDERICK W MILLER, RON KANESHIRO
Format Patent
LanguageEnglish
Published 01.12.2010
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Summary:The impulse response of the optical output of a laser 104 of an optical transmitter 100 is adaptively adjusted in a way that ensures that the optical waveform being transmitted from the optical transmitter into the optical waveguide of an optical link has a desired waveform shape that improves the performance of the optical link. The transmitter 100 comprises an input buffer 101, a multi-tap adaptive filter circuit 110, a laser driver circuit 103 controlling a laser diode 104, a monitor photodiode 112, a high-speed amplifier 120, a configurable filter 130, an error function block 140, and an algorithm and control block 150 which adjusts the tap weights of the multi-tap filter circuit 110 based on the error value produced by the error function block 140.
Bibliography:Application Number: GB20100007708