Ultra-high resolution fiber laser strain sensor based on optical injection phase-lock loop
We propose an ultrahigh resolution distributed-feedback fiber laser (DFB-FL) based strain sensor based on optical injection phase-lock loop (OIPLL). For optical injection-locking (OIL) path, we obtain a high quasi-strain spectral resolution of 2.16 pε/√Hz at 80 Hz, and for optical phase-locked loop (OPLL) path we realize an ultrahigh dynamic strain spectral resolution of 125.89 fε/√Hz at 1 kHz at the same time, which appears to be extremely auspicious for applications in geophysical research.
Authors
- Shengdong Zhang (ORCID: https://orcid.org/0000-0002-1815-8661)
- Yifei Lu (ORCID: https://orcid.org/0000-0001-8212-0556)
- Mengyao Zhang (ORCID: https://orcid.org/0009-0002-7175-8006)
- Wei Jin (ORCID: https://orcid.org/0000-0003-4552-5890)
- Zhihai Liu (ORCID: https://orcid.org/0000-0003-3160-6550)
- Jiaxing Gao (ORCID: https://orcid.org/0000-0001-7764-5542)
Institutions
- Harbin Engineering University (CN)
Publication Details
- Published
- 2025-05-22
- DOI
- https://doi.org/10.1117/12.3061073
- Primary Topic
- Advanced Fiber Optic Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00