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Dense Temporally Multiplexed Fiber Bragg Grating Sensing Based on Single-Photon Detection

Temporal multiplexed fiber Bragg grating (FBG) sensing system for detecting physical parameters with a high spatial resolution is desirable for applications such as structure health monitoring, oil and gas exploration, geophysical research, etc. However, due to the trade-off between bandwidth and sensitivity of the linear photodetection, the wavelength resolution of dense temporally multiplexed FBG sensing system is severely affected under a spatial resolution of centimeters. In this paper, we propose and demonstrate a dense temporal multiplexed FBG sensing scheme with single-photon detection at 1.5 μm. A proof-of-principle demonstration is implemented by using three FBG sensors spliced along a piece of fiber. The spatial resolution can reach 5.0 cm which is determined by a time jitter of superconducting nanowire single-photon detector and a pulse width of laser. In our experiment, by using the dual-wavelength differential detection method, a wavelength resolution of 0.5 pm over a range of 550 pm is obtained with a corresponding temperature resolution of 0.05 °C, which could be further improved to 0.01 °C by increasing the repetition rate of laser pulse.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.13 July 1 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 4458-4466

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

SUPERCONDUCTING NANOWIRE SINGLE-PHOTON DETECTOR
SINGLE-PHOTON DETECTION
DENSE TEMPORAL MULTIPLEXED FBG SENSING
DUAL-WAVELENGTH DIFFERENTIAL INTERROGATION

Info Detail Spesifik

DOI: 10.1109/JLT.2022.3158074

Pernyataan Tanggungjawab

Xiaodong Fan, Zhonghua Ou, Lixun Zhang, Ruiming Zhang, Chenzhi Yuan, Guangwei Deng, You Wang, Haizhi Song, Lixing You, Yong Liu, Guangcan Guo, Qiang Zhou

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