• Chinese Optics Letters
  • Vol. 19, Issue 9, 091204 (2021)
Dong-Ning Wang*
Author Affiliations
  • College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
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    DOI: 10.3788/COL202119.091204 Cite this Article Set citation alerts
    Dong-Ning Wang. Review of femtosecond laser fabricated optical fiber high temperature sensors [Invited][J]. Chinese Optics Letters, 2021, 19(9): 091204 Copy Citation Text show less
    Optical microscope images of FBGs inscribed by IR fs lasers[13]. (a) Type I grating; (b) type II grating.
    Fig. 1. Optical microscope images of FBGs inscribed by IR fs lasers[13]. (a) Type I grating; (b) type II grating.
    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. 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].
    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. 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.
    Schematics of the femtosecond laser fabricated fiber in-line interferometers. (a) FPI, (b) MZI, and (c) MI.
    Fig. 4. Schematics of the femtosecond laser fabricated fiber in-line interferometers. (a) FPI, (b) MZI, and (c) MI.
    Dong-Ning Wang. Review of femtosecond laser fabricated optical fiber high temperature sensors [Invited][J]. Chinese Optics Letters, 2021, 19(9): 091204
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