Chinese Optics Letters, Volume. 19, Issue 9, 091204(2021)
Review of femtosecond laser fabricated optical fiber high temperature sensors [Invited]
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![Optical microscope images of FBGs inscribed by IR fs lasers[13]. (a) Type I grating; (b) type II grating.](/Images/icon/loading.gif){kind=icon}
Fig. 1. Optical microscope images of FBGs inscribed by IR fs lasers[13]. (a) Type I grating; (b) type II grating.
Fig. 2. Change in the reflectivity of the type II-IR FBGs inscribed in normal and pre-annealed fibers over a 1300 min period at an annealing temperature of 1200°C[12].
Fig. 3. Evolutions of (a) the reflection and (b) the resonant wavelength of the pre-stressed FBGs (fabricated using 550 µJ pulse energy) over 26 h at the annealing temperature of 1200°C.
Fig. 4. Schematics of the femtosecond laser fabricated fiber in-line interferometers. (a) FPI, (b) MZI, and (c) MI.
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Dong-Ning Wang, "Review of femtosecond laser fabricated optical fiber high temperature sensors [Invited]," Chin. Opt. Lett. 19, 091204 (2021)
Paper Information
Category: Instrumentation, Measurement, and Optical Sensing
Received: Dec. 6, 2020
Accepted: Mar. 17, 2021
Published Online: Jul. 8, 2021
The Author Email: Dong-Ning Wang (dnwang@cjlu.edu.cn)
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