RT - Journal Article T1 - Design and Fabrication of Tapered Fiber Optics Sensor for Biosensing Application JF - opsi YR - 2017 JO - opsi VO - 23 IS - 0 UR - http://opsi.ir/article-1-1206-en.html SP - 1065 EP - 1068 K1 - Tapered fiber K1 - biosensor K1 - refractive index K1 - biological buffers AB - This article presents design and fabrication of a biosensor based on tapered fiber by measuring the output spectrum in the presence of liquids with different refractive indices. The fiber taper was made by oxy-butane torch. The spectrum is obtained using a broadband light source and an optical spectrum analyzer (OSA), in the wavelength range of 40nm. The effect of changing the refractive index on output spectrum was investigated. It is shown that by increasing the refractive index of the surrounding environment, the output spectrum is shifted and a sensitivity of the order of 0.1 nm/RIU is obtained. LA eng UL http://opsi.ir/article-1-1206-en.html M3 ER -