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  1. 060 工学部
  2. 40 学会発表資料
  3. 06 SPIE
  1. 0 資料タイプ別
  2. 04 会議発表論文

Improvement of the signal-to-noise ratio in a glass-based guided-wave optical microphone

http://hdl.handle.net/10191/31209
http://hdl.handle.net/10191/31209
c7effe29-1e6c-4952-b4a4-73d012dc16b5
名前 / ファイル ライセンス アクション
6475_647519.pdf 6475_647519.pdf (811.3 kB)
Item type 会議発表論文 / Conference Paper(1)
公開日 2014-12-24
タイトル
タイトル Improvement of the signal-to-noise ratio in a glass-based guided-wave optical microphone
タイトル
言語 en
タイトル Improvement of the signal-to-noise ratio in a glass-based guided-wave optical microphone
言語
言語 eng
キーワード
主題Scheme Other
主題 optical microphone
キーワード
主題Scheme Other
主題 guided-wave optics
キーワード
主題Scheme Other
主題 glass
キーワード
主題Scheme Other
主題 diaphragm
キーワード
主題Scheme Other
主題 elasto-optic effect
資源タイプ
資源 http://purl.org/coar/resource_type/c_5794
タイプ conference paper
著者 Nikkuni, Hiroyuki

× Nikkuni, Hiroyuki

WEKO 169414

Nikkuni, Hiroyuki

Search repository
Mogi, Yoshiaki

× Mogi, Yoshiaki

WEKO 169415

Mogi, Yoshiaki

Search repository
Hayashi, Manabu

× Hayashi, Manabu

WEKO 169416

Hayashi, Manabu

Search repository
Ohkawa, Masashi

× Ohkawa, Masashi

WEKO 169417

Ohkawa, Masashi

Search repository
Sekine, Seishi

× Sekine, Seishi

WEKO 169418

Sekine, Seishi

Search repository
Sato, Takashi

× Sato, Takashi

WEKO 169419

Sato, Takashi

Search repository
抄録
内容記述タイプ Abstract
内容記述 In this study, the signal-to-noise ratio of a glass-based guided-wave optical microphone was successfully improved by both increasing sensitivity and reducing noise. The optical microphone has a square diaphragm as a pressure-sensitive structure and a straight single-mode waveguide across the diaphragm. Sensitivity of the microphone and resonance frequency of the diaphragm are dependent on the area and thickness of the diaphragm. In this study, in order to increase sensitivity, the diaphragm dimensions were enlarged from 16 mmx16 mmx0.15 mm in the previous study to 20 mmx20 mmx0.15 mm. According to theoretical calculations, the phase sensitivity and resonance frequency were 2.5 mrad/Pa and 3.4 kHz for a 20 mmx20 mmx0.15 mm diaphragm, respectively. The sensitivity was theoretically expected to be twice as high as that in the previous study. To reduce noise, a bandpass filter with passband from 300 Hz to 3 kHz was employed. After fabrication of the optical microphone, sound pressure, ranging from 100 to 122 dB-SPL, was applied to the microphone with a frequency of 1 kHz. The measured output of the optical microphone was almost proportional to the sound pressure, and the minimum detectable sound pressure level of the microphone was experimentally evaluated to be 100 dB-SPL.
内容記述
内容記述タイプ Other
内容記述 Integrated optics: devices, materials, and technologies 11 : 22-24 January 2007 : San Jose, California, USA. : Jan 2007, San Jose, CA
書誌情報 Proceedings of SPIE - the International Society for Optical Engineering
en : Proceedings of SPIE - the International Society for Optical Engineering

巻 6475, p. 647519-1-647519-8, 発行日 2007-02
出版者
出版者 International Society for Optical Engineering, SPIE
ISSN
収録物識別子タイプ ISSN
収録物識別子 0277786X
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10619755
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1117/12.698904
権利
権利情報 Copyright 2007 Society of Photo-Optical Instrumentation Engineers
著者版フラグ
値 publisher
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