US Patent 11397363 Automatic bias control circuit
Patent 11397363 was granted and assigned to Nippon Telegraph and Telephone on July, 2022 by the United States Patent and Trademark Office.
All edits
US Patent 11397363 Automatic bias control circuit
A control processor performs, in a startup sequence of an IQ optical modulator using a nested MZI, a first-stage process of controlling, so that a signal quality of an optical QAM signal output from a monitor port of the IQ optical modulator approaches a target quality, a voltage applied by a Bias_I voltage generator to I-component MZ optical modulator, a voltage applied by a Bias_Q voltage generator to a Q-component MZ optical modulator, and a voltage applied by a Bias_Ph voltage generator to a Bias_Ph phase adjusting means for controlling an optical path length of a parent MZI. After a completion of the first-stage process, the control processor changes a voltage output from the Bias_Ph voltage generator by a predetermined amount.
Find more entities like US Patent 11397363 Automatic bias control circuit
