Presentation 2007-06-29
Design for glass-based guided-wave optical microphone with a diaphragm : Sensitivity dependence with respect to thickness and side length ratio of the diaphragm
Hiroyuki NIKKUNI, Yu WATANABE, Masashi OHKAWA, Seishi SEKINE, Takashi SATO,
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Abstract(in English) Sensitivity of a guided-wave optical microphone is theoretically found to be inversely proportional to the square of the diaphragm thickness. Also, according to the theoretical analysis, sensitivity increases with an increase in side length ratio for the side length ratio of less than unity, but the sensitivity shows a plateau for the ratio of more than unity. These dependencies, however, have not been demonstrated experimentally, although they are important in the designing of the optical microphone. In this study, these dependencies were examined experimentally. Based on the sensitivity dependence with respect to the diaphragm dimensions, the optical microphone with a 20 mm×20 mm×0.15 mm diaphragm was fabricated, and then successfully detected a sound wave of 100 dB-SPL.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) optical microphone / optical waveguide / glass / diaphragm / elasto-optic effect
Paper # OPE2007-26,LQE2007-27
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Committee LQE
Conference Date 2007/6/22(1days)
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Paper Information
Registration To Lasers and Quantum Electronics (LQE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Design for glass-based guided-wave optical microphone with a diaphragm : Sensitivity dependence with respect to thickness and side length ratio of the diaphragm
Sub Title (in English)
Keyword(1) optical microphone
Keyword(2) optical waveguide
Keyword(3) glass
Keyword(4) diaphragm
Keyword(5) elasto-optic effect
1st Author's Name Hiroyuki NIKKUNI
1st Author's Affiliation Graduate School of Science and Technology, Niigata University()
2nd Author's Name Yu WATANABE
2nd Author's Affiliation Graduate School of Science and Technology, Niigata University
3rd Author's Name Masashi OHKAWA
3rd Author's Affiliation Faculty of Engineering, Niigata University
4th Author's Name Seishi SEKINE
4th Author's Affiliation Faculty of Engineering, Niigata University
5th Author's Name Takashi SATO
5th Author's Affiliation Faculty of Engineering, Niigata University
Date 2007-06-29
Paper # OPE2007-26,LQE2007-27
Volume (vol) vol.107
Number (no) 125
Page pp.pp.-
#Pages 6
Date of Issue