Patent ID: 11888288
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 14:
15. A system adapted to mitigate silicon breakdown of a laser diode driver by controlling a bleed current through the laser diode, the system comprising:
a bleed resistor circuit having a switch control input, a first power input coupled to a first voltage source, a second power input coupled to a voltage source supply, and a power output coupled to an anode of the laser diode, the bleed resistor circuit configured to control the bleed current through the laser diode when a control signal received at the switch control input is activated; and
an overvoltage detector circuit having a detector input 161 configured to determine when a voltage between a cathode of the laser diode and the voltage source supply exceeds a predetermined voltage, the overvoltage detector circuit having an overvoltage output, the overvoltage detector circuit is configured to activate the control signal that is communicated from the overvoltage output to the switch control input in response to determining that the voltage between a cathode of the laser diode and a voltage source supply exceeds a predetermined voltage difference, wherein activation of the control signal causes a switch of the bleed resister circuit to selectively couple the first voltage source and the anode of the diode through one or more resistors that control the bleed current through the laser diode for mitigating silicon breakdown of the laser diode driver.