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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 10 — May. 15, 2011
  • pp: 1752–1754

Humidity sensor based on a single-mode hetero-core fiber structure

Qiang Wu, Yuliya Semenova, Jinesh Mathew, Pengfei Wang, and Gerald Farrell  »View Author Affiliations


Optics Letters, Vol. 36, Issue 10, pp. 1752-1754 (2011)
http://dx.doi.org/10.1364/OL.36.001752


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Abstract

Using a small-core single-mode fiber (SCSMF), a novel relative humidity (RH) sensor based on an SMF28-SCSMF-SMF28 fiber structure was proposed in this paper. By depositing a humidity sensitive material, such as poly (ethylene oxide) (PEO) on the bare SCSMF fiber, the proposed structure can act as an RH sensor with high sensitivity. Experiments demonstrated that the proposed RH sensor with PEO coating can achieve a sensitivity of 430 nm per relative humidity unit (RHU) in the RH range from 80% to 83% RH and a sensitivity of 50 nm per RHU in the RH range from 83% to 95% RH.

© 2011 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 9, 2011
Revised Manuscript: March 23, 2011
Manuscript Accepted: April 5, 2011
Published: May 4, 2011

Citation
Qiang Wu, Yuliya Semenova, Jinesh Mathew, Pengfei Wang, and Gerald Farrell, "Humidity sensor based on a single-mode hetero-core fiber structure," Opt. Lett. 36, 1752-1754 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-10-1752

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