Highly sensitive dynamic strain measurements by locking lasers to fiber Bragg gratings

B. Lissak, A. Arie, M. Tur
1998 Optics Letters  
A novel, sensitive, simple, and robust strain interrogation technique is analyzed and experimentally tested. By locking a laser wavelength to the midref lection wavelength of a standard f iber Bragg grating and measuring the error signal, we achieve high dynamic strain sensitivity of 45 picostrain͞ p Hz rms at 3 kHz, where the dominant noise in the experiment is the laser frequency noise.
doi:10.1364/ol.23.001930 pmid:18091959 fatcat:glqyqr5cgrbmfbxd2wz4f7llju