نوع مقاله : مقاله پژوهشی
نویسندگان
1 فیزیک دانشگاه علم و صنعت ایران، تهران
2 شیمی دانشگاه علم و صنعت ایران/تهران
3 مرکز تحقیقات علوم و فناوری اپتیک و لیزر، دانشگاه صنعتی مالک اشتر/ اصفهان
کلیدواژهها
عنوان مقاله English
نویسندگان English
This paper presents the fabrication process and operation of a bio-sensor based on tapered optical fiber by using optical spectrum shift in the presence of PBS buffer and dissolved streptavidin. The taper-fiber sensors are 18 and 24 μm in diameter and are fabricated by use of an oxy-butane torch. The optical spectrum is obtained using a broadband light source and an optical spectrum analyzer (OSA) in a 40 nm wavelength range. The existence of streptavidin on the tapered fiber surface is confirmed. The experiments on PBS buffer have shown that, the output spectrum demonstrates a red-shift by adding the streptavidin. The maximum sensitivity obtained is 29000 nm/RIU.
کلیدواژهها English