Optical phase detector for an optical phase lock loop
US9553715B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Mar 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0331
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical phase detector circuit is provided that is suitable for use in an optical phase lock loop. The optical phase detector includes a first optical flip-flop circuit configured to produce a first digital output based on ON/OFF state of a first digital optical input and a digital electrical control signal. A second optical flip-flop circuit is configured to produce a second digital output based on ON/OFF state of a second digital optical input and the digital electrical control signal. An AND gate is operably coupled to both the first and second optical flip-flops. The AND gate produces the digital electrical control signal for supply to the first and second optical flip-flop circuits according to an AND function of the first and second digital outputs produced by the first and second optical flip-flop circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.