title: High-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry.
abstract: A high-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry is proposed that uses a new technique with two right-angle prisms. Interestingly, the technique provides a novel method for designing small-angle sensors with high sensitivity and high resolution. Its theoretical resolution can reach 1.2x10(-7) rad over the measurement range of -0.15 degrees < or =theta< or =0.15 degrees . The method has some merits, e.g., a simple optical setup, easy operation, high resolution, high sensitivity, and rapid measurement. Its feasibility is demonstrated.
authors.affiliation: Department of Electronic Engineering, Ching Yun University, Jhongli City, Taoyuan, Taiwan, ROC.
authors.forename: Shinn-Fwu
authors.initials: SF
authors.lastname: Wang
authors.forename: Ming-Hung
authors.initials: MH
authors.lastname: Chiu
authors.forename: Chih-Wen
authors.initials: CW
authors.lastname: Lai
authors.forename: Rong-Seng
authors.initials: RS
authors.lastname: Chang