[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5394/KINPR.2008.32.9.723

Length Effects of Hetero-Core Optical Biosensor based on Evanescent Field Absorption

Shim, Joon-Hwon (Division of Computer, Control and Electronic Communications Engineering, Korea Maritime University)
Chan, Joo-Kwong (Division of Computer, Control and Electronic Communications Engineering, Korea Maritime University)
Sohn, Kyung-Rak (Division of Computer, Control and Electronic Communications Engineering, Korea Maritime University)

Publication Information

Journal of Navigation and Port Research / v.32, no.9, 2008 , pp. 723-727 More about this Journal

Abstract

Sensing performances of evanescent field absorption (EFA) hetero-core fiber sensor has been presented based on EFA by changing the length and the core diameter of the single mode fiber. Experimental results have demonstrated a good feature in their relationship between the length and the core diameter of the single mode fiber. The sensor consists of 2 fiber optics which have the same cladding diameter of $125{\mu}m$ However one fiber optic used is single mode and has varying core diameter ranging from 3.3 to $5.6{\mu}m$ . The other fiber is multimode type and has a thicker fixed core diameter of $62.5{\mu}m$ . The 2 fiber optics are thermally spliced together. Experiments conducted to measure the resonance wavelength were carried out over a range of refractive index, to find the optimum sensing length Experiments show that core diameter of the single mode fiber and sensing length offects the linearity and sensitivity.

Keywords

evanescent field absorption; hetero-core structure; resonance wavelength; biosensor; optical fiber sensor;

Citations & Related Records

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