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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 1940–1942

Femtosecond laser fabricated micro Mach-Zehnder interferometer with Pd film as sensing materials for hydrogen sensing

Min Wang, Minghong Yang, Jie Cheng, Jixiang Dai, Minwei Yang, and D. N. Wang  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 1940-1942 (2012)
http://dx.doi.org/10.1364/OL.37.001940


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Abstract

In this paper, a femtosecond laser fabricated fiber inline micro Mach-Zehnder interferometer with deposited palladium film for hydrogen sensing is presented. Simulation results show that the transmission spectrum of the interferometer is critically dependent on the microcavity length and the refractive index of Pd film and a short microcavity length corresponds to a high sensitivity. The experimental results obtained in the wavelength region of 1200–1400 nm, and in the hydrogen concentration range of 0–16%, agree well with that of the simulations. The developed system has high potential in hydrogen sensing with high sensitivity.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(310.6860) Thin films : Thin films, optical properties
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7140) Ultrafast optics : Ultrafast processes in fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 17, 2012
Revised Manuscript: March 8, 2012
Manuscript Accepted: April 6, 2012
Published: May 25, 2012

Citation
Min Wang, Minghong Yang, Jie Cheng, Jixiang Dai, Minwei Yang, and D. N. Wang, "Femtosecond laser fabricated micro Mach-Zehnder interferometer with Pd film as sensing materials for hydrogen sensing," Opt. Lett. 37, 1940-1942 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-1940


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