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Title:
IMPROVED FIBER OPTIC CHEMICAL SENSOR
Document Type and Number:
Japanese Patent JP2009075065
Kind Code:
A
Abstract:

To provide an optical system for sensing chemical substances.

An example system includes a light source, a light sensor, a processing device in signal communication with the light source and the light sensor, and a fiber optic cable 20 that receives light from the light source and delivers light to the light sensor. The fiber optic cable includes a cladding material 26 that is permeable to a predefined substance and an optical fiber core 24 surrounded by the cladding material. The optical fiber core is a single mode optical fiber having a diameter greater than 30 m. The optical fiber core includes a hollow center having a diameter of 1-50 m. The optical fiber core includes a plurality of lengthwise holes positioned to provide single mode light propagation properties. The plurality of lengthwise holes have a diameter of 0.2-4 m.


Inventors:
SANDERS GLEN A
Application Number:
JP2008146734A
Publication Date:
April 09, 2009
Filing Date:
June 04, 2008
Export Citation:
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Assignee:
HONEYWELL INT INC
International Classes:
G01N21/27; G02B6/00; G02B6/02; G02B6/032; G02B6/42
Domestic Patent References:
JP2005512079A2005-04-28
JP2000275174A2000-10-06
JP2005538029A2005-12-15
JPH10332584A1998-12-18
JPS63307335A1988-12-15
Foreign References:
WO2006108096A22006-10-12
US6694067B12004-02-17
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Otsuka Sumie



 
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