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