High-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry

Shinn Fwu Wang, Ming Hung Chiu, Chih Wen Lai, Rong Seng Chang

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

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 1.2 × 10-7 rad over the measurement range of -0.15° ≤ θ ≤ 0.15°. The method has some merits, e.g., a simple optical setup, easy operation, high resolution, high sensitivity, and rapid measurement. Its feasibility is demonstrated.

Original languageEnglish
Pages (from-to)6702-6707
Number of pages6
JournalApplied Optics
Volume45
Issue number26
DOIs
StatePublished - 10 Sep 2006

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