Patent ID: 11947200
Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A method of controlling an optical modulation device to induce a desired optical phase change of the optical modulation device, the method comprising the steps of:
providing a first current command to a heater circuit to alter a temperature of a heater resistance of an optical modulation device;
directly monitoring an electrical characteristic of the heater resistance;
determining that the monitored electrical characteristic indicates that a first optical phase change different from the desired optical phase change is being induced in the optical modulation device; and
in response to the determination that the first optical phase change is being induced, providing a second current command to the heater circuit, the second current command being different than the first current command;
wherein the step of determining that the monitored electrical characteristic indicates that the first optical phase change being induced in the optical modulation device is different from the desired optical phase change includes the steps of:
determining a first value based on the monitored electrical characteristic;
comparing the first value to a target value, the target value being representative of the desired optical phase change; and
when a difference between the first value and the target value has a first characteristic, determine that the first optical phase change is being induced.