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Pico-Strain Resolution Multiplexed Fiber Grating Sensor Array Interrogated With Mode-Locked Laser

A multiplexed fiber grating sensor system based on injection-locking and high-order Pound-Drever-Hall techniques is presented. In the sensor system, two distributed feedback fiber lasers and a mode-locked laser are employed as the sensor array and probe laser, respectively. The weak comb teeth of the modelocked laser are injection locked to corresponding sensing elements, to suppress the free running noise of the laser sensors and thus interrogate the sensor array. A high strain resolution of 72 pε in 100 s and 4 pε/√ Hz above 10 Hz is proved. The proposed method allows the direct use of optical frequency comb as the light source in fiber grating sensor system. We believe this achievement is of great significance for fiber grating sensors in both sensing resolution and multiplexing scale.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.37 No.18 September 15 2019

No. Panggil

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Penerbit

: .,

Deskripsi Fisik

p. 4838 - 4843

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

INJECTION LOCKING
FIBER BRAGG GRATING (FBG) SENSOR
MULTIPLEXED SENSING SYSTEM
OPTICAL FREQUENCY COMB (OFC)
POUND–DREVER–HALL (PDH) TECHNIQUE

Info Detail Spesifik

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Pernyataan Tanggungjawab

Shuangxiang Zhao, Qingwen Liu, Jiageng Chen, Zuyuan He

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