US 12,235,491 B2
High voltage monitoring for optical switching applications
Dennis Yen, Los Altos, CA (US); Scott McCauley, Sunnyville, CA (US); and Kevin Yasumura, Lafayette, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Jan. 12, 2022, as Appl. No. 17/573,952.
Claims priority of provisional application 63/215,678, filed on Jun. 28, 2021.
Prior Publication US 2022/0413225 A1, Dec. 29, 2022
Int. Cl. G02B 6/35 (2006.01); G01R 31/52 (2020.01); G01R 31/28 (2006.01)
CPC G02B 6/3518 (2013.01) [G01R 31/52 (2020.01); G01R 31/2829 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an optical circuit switch (OCS), the OCS comprising:
an OCS control system; and
a mirror array, wherein:
individual mirrors within the mirror array are coupled with at least one actuator controlled by the OCS control system, and
wherein the mirror array is a driver actuated mirror array or an actuator actuated mirror array; and
at least one diagnostic circuit coupled to the at least one actuator via a drive circuit, the at least one diagnostic circuit being separate from the OCS control system, the at least one diagnostic circuit comprising:
a first analog to digital converter (ADC), wherein the first analog to digital convertor is coupled to a processor or the OCS control system and configured to output electrical information related to the drive circuit, and
a drive circuit component configured to provide power to the mirror array, the drive circuit component being a drive field-effect transistor or a power supply rail.