Optical synthesizer tuning using fine and coarse optical frequency combs
US9407373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2014 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/508
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments herein provide for an optical frequency synthesizer including a coarse optical frequency comb, a fine optical frequency comb, and an output laser. The coarse comb is pumped with a first pump laser, and an absolute frequency of at least one tooth of the coarse optical frequency comb is set. The fine comb is pumped with a second pump laser and has a frequency spacing between teeth that is locked to a fractional or integer multiple of a radio frequency reference. Initially, the second pump laser is locked to a first tooth of the coarse optical frequency comb. The optical frequency synthesizer can be tuned by sweeping the second pump laser and locking the second pump laser to a desired tooth. An output signal can then be generated with the output laser based on a tooth of fine comb after the second pump is locked to the desired tooth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.