Title:
CHEMICAL SUBSTANCE SENSING DEVICE, SYSTEM AND METHOD OF OPTICAL FIBER TYPE
Document Type and Number:
Japanese Patent JP2007101547
Kind Code:
A
Abstract:
To provide a chemical substance sensing technique based on a fiber grating and superior in flexibility, without requiring to etch the fiber cladding or to mechanically deform the fiber grating.
A chemical substance sensing device (10) comprises a fiber core (12) and the fiber cladding (14). The fiber core comprises refractive-index modulation grating region (16), having an apodized profile constituted for increasing the deviation of light (18) into the fiber cladding, the fiber cladding in the chemical substance sensing device is constituted, such that at least a part of deviation light is reflected in reverse, directed to the fiber core. The sensing device is applicable to the method and system for sensing the chemical substance.
Inventors:
XIA HUA
GUIDA RENATO
DENG KUNG LI
GUIDA RENATO
DENG KUNG LI
Application Number:
JP2006268085A
Publication Date:
April 19, 2007
Filing Date:
September 29, 2006
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
G01N21/27; G01N21/35; G01N21/41; G02B6/02
Domestic Patent References:
| JP2008528983A | 2008-07-31 | |||
| JP2005114702A | 2005-04-28 | |||
| JP2004103682A | 2004-04-02 | |||
| JPH08338806A | 1996-12-24 | |||
| JP2004170313A | 2004-06-17 | |||
| JP2003156643A | 2003-05-30 |
Foreign References:
| US6950578B1 | 2005-09-27 |
Other References:
JPN6012035421; ＣＨＥＮ，Ｘ． 他: '"Ｓｉｍｕｌｔａｎｅｏｕｓ ｍｅａｓｕｒｅｍｅｎｔ ｏｆ ｔｅｍｐｅｒａｔｕｒｅ ａｎｄ ｅｘｔｅｒｎａｌ ｒｅｆｒａｃｔｉｖｅ ｉｎｄｅｘ ｂｙ ｕｓｅ ｏｆ ａ ｈｙｂｒｉｄ ｇｒａｔｉｎｇ ｉ' ＡＰＰＬＩＥＤ ＯＰＴＩＣＳ Ｖｏｌ．４４， Ｎｏ．２, 20050110, ｐｐ．１７８-１８２
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi