OSA's Digital Library

Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 8, Iss. 5 — May. 1, 2010
  • pp: 482–484

An optical fiber methane gas sensing film sensor based on core diameter mismatch

Jianchun Yang, Longjun Xu, and Weimin Chen  »View Author Affiliations


Chinese Optics Letters, Vol. 8, Issue 5, pp. 482-484 (2010)


View Full Text Article

Acrobat PDF (257 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

An optical fiber evanescent wave methane gas sensor based on core diameter mismatch is reported. The sensor consists of a multimode fiber in which a short section of standard single-mode fiber, coated with the inclusion of cryptophane molecules E in a transparent polysiloxane film, is inserted. The sensing principle is analyzed by optical waveguide theory. For different sensing film thicknesses and interaction lengths, the sensor signal is investigated within the methane concentration range of 0-14.5% (v/v). It is shown that the sensor signal with the thickness of 5 \mu m and the interaction length of 3 mm strengthens linearly with the increasing concentration of methane, with a slope of 0.0186. The best detection limit of the sensor for methane is 2.2% (v/v) with a response time of 90 s. This sensor is suitable for the detection of methane concentration below the critical value of 5%.

© 2010 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.1880) Instrumentation, measurement, and metrology : Detection
(130.6010) Integrated optics : Sensors

Citation
Jianchun Yang, Longjun Xu, and Weimin Chen, "An optical fiber methane gas sensing film sensor based on core diameter mismatch," Chin. Opt. Lett. 8, 482-484 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-5-482

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited