title: Wavelength-multiplexing phase-sensitive surface plasmon imaging sensor.
abstract: A wavelength-multiplexing phase-sensitive surface plasmon resonance (SPR) imaging sensor offering wide dynamic detection range and microarray capability is reported. Phase detection is accomplished by performing self-interference between the s- and p- polarizations within the signal beam. A liquid crystal tunable filter is used to sequentially select the SPR excitation wavelength from a white light source. This wavelength-multiplexing approach enables fast detection of the sensor's SPR phase response over a wide range of wavelengths, thereby covering literally any regions of interest within the SPR dip and thus maintaining the highest sensitivity point at all times. The phase-sensitive approach is particularly important for imaging SPR sensing applications because of its less stringent requirements for intensity signal-to-noise ratio, which also means the possibility of using uncooled modest resolution analog-to-digital conversion imaging devices. Experimental results demonstrate a resolution of 2.7×10(-7) RIU with a dynamic range of 0.0138 RIU.
authors: College of Optoelectronics Engineering, Key Laboratory of Optoelectronic Devices and Systems, Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China. shaoyh@szu.edu.cn
authors: Yonghong
authors: Y
authors: Shao
authors: Yan
authors: Y
authors: Li
authors: Dayong
authors: D
authors: Gu
authors: Kai
authors: K
authors: Zhang
authors: Junle
authors: J
authors: Qu
authors: Jianan
authors: J
authors: He
authors: Xuejin
authors: X
authors: Li
authors: Shu-Yuen
authors: SY
authors: Wu
authors: Ho-Pui
authors: HP
authors: Ho
authors: Michael G
authors: MG
authors: Somekh
authors: Hanben
authors: H
authors: Niu
mesh_terms: D000818:Animals; D005990:Glycerol / Q000737:chemistry; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D061848:Optical Imaging / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D007074:Immunoglobulin G; D014867:Water; D005990:Glycerol