Enhanced sensitivity to surface plasmon resonance phase in wavelength-modulated heterodyne interferometry

Ju Yi Lee; Li Wei Mai; Cheng Chih Hsu; Yuan Yuan Sung

doi:10.1016/j.optcom.2012.10.005

Enhanced sensitivity to surface plasmon resonance phase in wavelength-modulated heterodyne interferometry

Ju Yi Lee, Li Wei Mai, Cheng Chih Hsu, Yuan Yuan Sung

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

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 3×10^-7 RIU.

Original language	English
Pages (from-to)	28-32
Number of pages	5
Journal	Optics Communications
Volume	289
DOIs	https://doi.org/10.1016/j.optcom.2012.10.005
State	Published - 15 Feb 2013

Keywords

Refractive index
Surface plasmon resonance
Wavelength-modulated heterodyne interferometry

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10.1016/j.optcom.2012.10.005

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abstract = "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 3×10-7 RIU.",

keywords = "Refractive index, Surface plasmon resonance, Wavelength-modulated heterodyne interferometry",

author = "Lee, {Ju Yi} and Mai, {Li Wei} and Hsu, {Cheng Chih} and Sung, {Yuan Yuan}",

note = "Funding Information: This study was supported by the National Science Council, Taiwan , under contract number NSC 100-2221-E-008-074-MY3 , and the Central Taiwan Science Park Administration under the contract number 302201802 .",

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AU - Lee, Ju Yi

AU - Mai, Li Wei

AU - Hsu, Cheng Chih

AU - Sung, Yuan Yuan

N1 - Funding Information: This study was supported by the National Science Council, Taiwan , under contract number NSC 100-2221-E-008-074-MY3 , and the Central Taiwan Science Park Administration under the contract number 302201802 .

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N2 - 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 3×10-7 RIU.

AB - 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 3×10-7 RIU.

KW - Refractive index

KW - Surface plasmon resonance

KW - Wavelength-modulated heterodyne interferometry

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VL - 289

SP - 28

EP - 32

JO - Optics Communications

JF - Optics Communications

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Enhanced sensitivity to surface plasmon resonance phase in wavelength-modulated heterodyne interferometry

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Keywords

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