A surface plasmon resonance sensor based on a single mode D-shape polymer optical fiber. (23rd December 2016)

• Record Type: Journal Article
• Authors: Gasior, Katarzyna; Martynkien, Tadeusz; Napiorkowski, Maciej; Zolnacz, Kinga; Mergo, Pawel; Urbanczyk, Waclaw
• Is Part Of: Journal of optics. Volume 19:Number 2(2017:Feb.)
• Publication Date: 2016-12-23
• Subjects: optical fiber sensor -- polymer optical fiber -- surface plasmon resonance; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/19/2/025001
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: For the first time to our knowledge, we report a successful fabrication of surface plasmon resonance (SPR) sensors in a specially developed single-mode birefringent polymer D-shape fiber with a core made of PMMA/PS copolymer. A small distance between the core and the cladding boundary allows to deposit a gold layer directly onto the flat fiber surface, which significantly simplifies the sensors fabrication process. The developed SPR sensor exhibits a sensitivity of 2765 nm RIU −1 for the refractive index of external medium equal to 1.410, which is similar to the sensitivity of the SPR sensors based on conventional side-polished single-mode silica fibers. Using the finite element method, we also numerically studied the sensor performance. The sensor characteristics obtained in the simulations are in a relatively good agreement with the experimental results.