Microbending optical fiber sensor for the detection of low-level heart sound

Chang Da Tsai; Shyh Lin Tsao; Hsiao Lung Chan; Wen Chon Shen; Chien Ping Wu

Microbending optical fiber sensor for the detection of low-level heart sound

Chang Da Tsai^*
, Shyh Lin Tsao
, Hsiao Lung Chan
, Wen Chon Shen
, Chien Ping Wu

^*Corresponding author for this work

National Taiwan University

Research output: Contribution to conference › Conference Paper › peer-review

Abstract

A microbending optical fiber sensor is developed for the detection of low level heart sound. The power of light coming from an He-Ne laser operating at 632.8 nm is 5 mW. A graded-index multimode fiber with a 62.5/125 (core/cladding) diameter is used as a microbending sensor. Various microbending deformers with different periodic perturbation pitches are studied. A high sensitivity photodetector following the fiber sensor can detect small optical power variation to achieve low-level heart sound detection. Comparison of results obtained shows that the microbending optical fiber sensor can provide more information about low-level heart sound than with a piezoelectric accelerometer.

Original language	English
Pages	312
Number of pages	1
State	Published - 1997
Externally published	Yes
Event	Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim - Chiba, Jpn Duration: 14 07 1997 → 18 07 1997

Conference

Conference	Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim
City	Chiba, Jpn
Period	14/07/97 → 18/07/97

Cite this

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title = "Microbending optical fiber sensor for the detection of low-level heart sound",

abstract = "A microbending optical fiber sensor is developed for the detection of low level heart sound. The power of light coming from an He-Ne laser operating at 632.8 nm is 5 mW. A graded-index multimode fiber with a 62.5/125 (core/cladding) diameter is used as a microbending sensor. Various microbending deformers with different periodic perturbation pitches are studied. A high sensitivity photodetector following the fiber sensor can detect small optical power variation to achieve low-level heart sound detection. Comparison of results obtained shows that the microbending optical fiber sensor can provide more information about low-level heart sound than with a piezoelectric accelerometer.",

author = "Tsai, \{Chang Da\} and Tsao, \{Shyh Lin\} and Chan, \{Hsiao Lung\} and Shen, \{Wen Chon\} and Wu, \{Chien Ping\}",

year = "1997",

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note = "Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim ; Conference date: 14-07-1997 Through 18-07-1997",

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T1 - Microbending optical fiber sensor for the detection of low-level heart sound

AU - Tsai, Chang Da

AU - Tsao, Shyh Lin

AU - Chan, Hsiao Lung

AU - Shen, Wen Chon

AU - Wu, Chien Ping

PY - 1997

Y1 - 1997

N2 - A microbending optical fiber sensor is developed for the detection of low level heart sound. The power of light coming from an He-Ne laser operating at 632.8 nm is 5 mW. A graded-index multimode fiber with a 62.5/125 (core/cladding) diameter is used as a microbending sensor. Various microbending deformers with different periodic perturbation pitches are studied. A high sensitivity photodetector following the fiber sensor can detect small optical power variation to achieve low-level heart sound detection. Comparison of results obtained shows that the microbending optical fiber sensor can provide more information about low-level heart sound than with a piezoelectric accelerometer.

AB - A microbending optical fiber sensor is developed for the detection of low level heart sound. The power of light coming from an He-Ne laser operating at 632.8 nm is 5 mW. A graded-index multimode fiber with a 62.5/125 (core/cladding) diameter is used as a microbending sensor. Various microbending deformers with different periodic perturbation pitches are studied. A high sensitivity photodetector following the fiber sensor can detect small optical power variation to achieve low-level heart sound detection. Comparison of results obtained shows that the microbending optical fiber sensor can provide more information about low-level heart sound than with a piezoelectric accelerometer.

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M3 - 论文

AN - SCOPUS:0030721368

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T2 - Proceedings of the 1997 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim

Y2 - 14 July 1997 through 18 July 1997

ER -

Microbending optical fiber sensor for the detection of low-level heart sound

Abstract

Conference

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