Digitally controlled chirped pulse laser for sub-terahertz range fiber structure interrogation
US9841301B2 · kind B2 · utility
3Cited by
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14Claims
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Key dates
| Filing date | Jan 27, 2017 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure provides a sweep velocity-locked laser pulse generator (SV-LLPG) controlled using a digital phase locked loop (DPLL) circuit. The SV-LLPG is utilized for the interrogation of sub-terahertz-range fiber structures for sensing applications that require real-time data collection with mm-level spatial resolution. A laser generates chirped laser pulses via injection current modulation and a DPLL circuit locks the optical frequency sweep velocity. A high-quality linearly chirped laser pulse with a frequency excursion of 117.69 GHz at optical communication bands using a distributed feedback laser is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.