Dual-Polarization Distributed Feedback Fiber Laser Sensor Based on Femtosecond Laser-Inscribed In-Fiber Stressors for Simultaneous Strain and Temperature Measurements

• Published in: IEEE access Vol. 8; pp. 97823 - 97829
• Main Authors: Guo, Kuikui, He, Jun, Xu, Gaixia, Wang, Yiping
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Automation; Axial strain; Beat frequencies; Birefringence; Bragg gratings; Cladding; Doped fibers; Dual polarization (waves); Erbium; Erbium-doped fiber lasers; Feedback; Fiber gratings; Fiber lasers; Infrared lasers; Laser beams; Lasers; Manufacturing engineering; Optical fiber polarization; Optical fiber sensors; Orthogonality; Polarization; Robotics; Sensors; Smart structures; Strain; Temperature measurement; Temperature sensors; Ultraviolet lasers

We propose and experimentally demonstrate a novel dual-polarization distributed feedback fiber laser (DFB-FL) sensor based on femtosecond laser-inscribed in-fiber stressors. The resonant cavity of the DFB-FL sensor consists of a phase-shifted fiber Bragg grating (PS-FBG) in the fiber core of a secti...