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

• 발행기관: 한국항해항만학회
• 저자명: Joon-Hwon Shim Joo-Kwang Chan Kyung-Rak Sohn
• 간행물 정보: 『한국항해항만학회지』제32권 제9호, 723~727쪽, 전체 5쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2008.12.20

영문 초록

Sensing perpormances 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 um However one fiber optic used is single mode and has varying core diameter ranging from 3.3 to 5.6 um The other fiber is multimode type and has a thicker fixed core diameter of 62.5 um 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 affects the linearity and sensitivity.

목차

1. Introduction

2. Experiment

3. Results and Discussion

4. Conclusion

키워드

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