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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3581–3583

Recapturing lost evanescent power by tuning end face total internal reflection capable tunneling modes at a roughened fiber end face

Jianjun Ma, Yasser Chiniforooshan, Jiahua Chen, Wojtek J. Bock, Wenhui Hao, and Zhi Yuan Wang  »View Author Affiliations


Optics Letters, Vol. 36, Issue 18, pp. 3581-3583 (2011)
http://dx.doi.org/10.1364/OL.36.003581


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Abstract

We reveal that the overall evanescent wave (EW) power captured by an unclad multimode fiber employed in a sensing configuration is determined by the tunneling modes, not the guided modes. While enormous in strength, most of this power is inaccessible using traditional EW power enhancers. However, we found that by roughening the fiber end face, this supposedly lost power can be recaptured and thus can boost the detectable power level significantly. Intensive mode mixing events across various mode categories are proposed to interpret the observed phenomenon.

© 2011 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 7, 2011
Manuscript Accepted: August 13, 2011
Published: September 9, 2011

Citation
Jianjun Ma, Yasser Chiniforooshan, Jiahua Chen, Wojtek J. Bock, Wenhui Hao, and Zhi Yuan Wang, "Recapturing lost evanescent power by tuning end face total internal reflection capable tunneling modes at a roughened fiber end face," Opt. Lett. 36, 3581-3583 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3581

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