An alternative wavelength-modulated heterodyne interferometry based on surface plasmon resonance is proposed for in-situ monitoring of variations in the refractive index of a test sample. Phase variations in surface plasmon resonance are detected by the heterodyne detection system, which uses a wavelength-modulated light source and an unequal-path-length optical configuration. The measurement sensitivity and resolution of the refractive index are greatly enhanced by inserting a quarter-wave plate with a suitable azimuthal angle in front of the SPR sensor. The experimental results indicate that the resolution is better than 3 x 10(-7) RIU. (C) 2012 Elsevier B.V. All rights reserved.
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Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Ho, HP
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Law, WC
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Law, WC
;
Wu, SY
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Wu, SY
;
Liu, XH
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Liu, XH
;
Wong, SP
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Wong, SP
;
Lin, CL
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Lin, CL
;
Kong, SK
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机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
机构:
Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China
Ho, HP
;
Lam, WW
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机构:Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China
机构:
Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Ho, HP
;
Law, WC
论文数: 0引用数: 0
h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Law, WC
;
Wu, SY
论文数: 0引用数: 0
h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Wu, SY
;
Liu, XH
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h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Liu, XH
;
Wong, SP
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h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Wong, SP
;
Lin, CL
论文数: 0引用数: 0
h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
Lin, CL
;
Kong, SK
论文数: 0引用数: 0
h-index: 0
机构:Chinese Univ Hong Kong, Ctr Adv Res Photon, Hong Kong, Hong Kong, Peoples R China
机构:
Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China
Ho, HP
;
Lam, WW
论文数: 0引用数: 0
h-index: 0
机构:Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China