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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 10 — Oct. 1, 2009
  • pp: 909–911

Improving the sensitivity of fiber-optic SPR sensor via radially polarized beam excitation

Jie Yan, Yonghua Lu, Pei Wang, Chun Gu, Rongsheng Zheng, Yong Chen, Hai Ming, and Qiwen Zhan  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 10, pp. 909-911 (2009)


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Abstract

We study the sensing properties of an intensity-modulated fiber-optic surface plasmon resonance (SPR) sensor using radially polarized beam (RPB). Because of the rotational symmetry of fiber and RPB, surface plasmon can be excited more efficiently at the sensor surface, which results in an obvious improvement of the sensitivity. Our experiments demonstrate that the sensitivity in the case of RPB illumination is three times higher than that of linearly polarized beam illumination.

© 2009 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(240.6680) Optics at surfaces : Surface plasmons
(310.5448) Thin films : Polarization, other optical properties

Citation
Jie Yan, Yonghua Lu, Pei Wang, Chun Gu, Rongsheng Zheng, Yong Chen, Hai Ming, and Qiwen Zhan, "Improving the sensitivity of fiber-optic SPR sensor via radially polarized beam excitation," Chin. Opt. Lett. 7, 909-911 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-10-909

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