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Title:
OPTICAL FIBRE SENSOR AND SOUND WAVE DETECTION APPLICATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/010701
Kind Code:
A1
Abstract:
An optical fibre sensor and a sound wave detection application method therefor. The optical fibre sensor comprises: an optical fibre (101) and a metal micro-nano structure located on an optical fibre end surface. When broad-spectrum optical fibre guided waves are incident on the metal micro-nano structure, a reflection spectrum or transmission spectrum has spectral valleys or spectral peaks caused by surface plasmon resonance. The optical fibre sensor (205) is used for sound wave detection, the optical fibre sensor (205) using light having a wavelength located within a surface plasmon resonance spectral valley or spectral peak range as incident light entering the optical fibre (101), and measuring sound wave signal-based reflection power or transmission power changes in real time so as to detect sound wave signal information. The present invention integrates the sound wave detection and the optical fibre sensor (205) with a high degree of integration, and has advantages such as a wide frequency response, a flat angular response, response stability and low noise.

Inventors:
YANG TIAN (CN)
ZHOU XIN (CN)
Application Number:
PCT/CN2017/100770
Publication Date:
January 18, 2018
Filing Date:
September 06, 2017
Export Citation:
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Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
G01D5/353
Domestic Patent References:
WO2005121697A12005-12-22
Foreign References:
CN104165840A2014-11-26
CN104596559A2015-05-06
CN104165841A2014-11-26
CN104458587A2015-03-25
CN104345358A2015-02-11
JP2001280922A2001-10-10
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (CN)
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