Enhanced cryogenic temperature sensor from 320 to 20 K amplified by Vernier effect DOI Creative Commons
Meiyu Cai, Hailiang Chen, Sa Zhang

et al.

APL Photonics, Journal Year: 2025, Volume and Issue: 10(3)

Published: March 1, 2025

There are urgent needs for cryogenic temperature sensing in the monitoring of liquefied gas energy, spacecraft, and cryobiology, with properties electromagnetic immunity, chemical corrosion, high sensitivity, a wide measurement range. In this paper, we proposed an improved sensor sensitivity ultra-wide range based on Vernier effect (VE) fiber Bragg grating (FBG). Owing to amplifying VE cascaded Sagnac interferometers (CSIs), showed average 6.73 nm/K. FBG was used mark dip wavelength as it exceeded free spectral output spectra CSIs. Finally, 320–20 K achieved. The also demonstrated good hysteresis, repeatability, stability. To best our knowledge, is first report utilizing excellent characteristics make CSIs competitive candidate various fields.

Language: Английский

Enhanced cryogenic temperature sensor from 320 to 20 K amplified by Vernier effect DOI Creative Commons
Meiyu Cai, Hailiang Chen, Sa Zhang

et al.

APL Photonics, Journal Year: 2025, Volume and Issue: 10(3)

Published: March 1, 2025

There are urgent needs for cryogenic temperature sensing in the monitoring of liquefied gas energy, spacecraft, and cryobiology, with properties electromagnetic immunity, chemical corrosion, high sensitivity, a wide measurement range. In this paper, we proposed an improved sensor sensitivity ultra-wide range based on Vernier effect (VE) fiber Bragg grating (FBG). Owing to amplifying VE cascaded Sagnac interferometers (CSIs), showed average 6.73 nm/K. FBG was used mark dip wavelength as it exceeded free spectral output spectra CSIs. Finally, 320–20 K achieved. The also demonstrated good hysteresis, repeatability, stability. To best our knowledge, is first report utilizing excellent characteristics make CSIs competitive candidate various fields.

Language: Английский

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