Spectral interferometric measurement of wavelength-dependent phase response for surface plasmon resonance sensors.
Here we experimentally demonstrate measurements of the wavelength-dependent phase response of a surface plasmon resonance sensor using a spectral interferometric technique. By using a broadband incoherent fiber light source and a polarimetry configuration with a high-birefringence component, the spectral phase response of a surface plasmon resonance sensor can be retrieved. A combination of wavelength interrogation and phase detection is enabled by our proposed scheme. In contrast to the previously demonstrated heterodyne or spatial fringe detection schemes, this in-line optical configuration is much simpler and can be very compact when implemented with advanced fiber optic and integrated components.
School of Electronic and Information Engineering, Beihang University, 37 Xueyuan Road, Beijing 100191, China. zhengzheng@buaa.edu.cn
Zheng
Z
Zheng
Yuhang
Y
Wan
Xin
X
Zhao
Jinsong
J
Zhu