Patent number: 9209815

Abstract: A charge pump circuit for an optical phase lock loop, which includes first and second optical thyristors configured to receive respective first and second digital optical signal inputs. A first control circuit receives a first digital electrical signal input corresponding to the second digital optical signal input, and a second control circuit receives a second digital electrical signal input corresponding to the first digital optical signal input. The first control circuitry controls switching operation of the first optical thyristor that sources current to a first filter circuit in response to the levels of the first digital optical signal input and the first digital electrical signal input. The second control circuitry control switching operation of the second optical thyristor that sinks current from a second filter circuit in response to the levels of the second digital optical signal input and the second digital electrical signal input.

Type: Grant

Filed: December 22, 2014

Date of Patent: December 8, 2015

Assignees: Opel Solar, Inc., The University of Connecticut

Inventor: Geoff W. Taylor