Volume 11, Issue 1 (International Journal of Optics and Photonics (IJOP) Vol 11, No 1, Winter-Spring 2017 2017)                   IJOP 2017, 11(1): 19-24 | Back to browse issues page

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Jafari J, Nouroozi R. Fabrication and Characterization of the Fiber Optical Taper for a Surface Plasmon Resonance Sensor. IJOP. 2017; 11 (1) :19-24
URL: http://ijop.ir/article-1-267-en.html
1- Physics Department, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan
Abstract:   (3946 Views)

For a fiber optical surface plasmon resonance (SPR) sensor a short part of its cladding should be removed to coat a thin layer of a metal. Usually this is problematic when an optical fiber with small core diameter is used. In this paper, a new method using µliter droplet of the HF acid for short fiber optical taper fabrication is reported. Using this method in a multi-mode optical fiber with the core/cladding size of 50/125 µm a 2 mm long taper with 40 µm diameter is fabricated. Roughness of its surface is investigated using an atomic force microscopy. The measured mean value of the roughness is about 8 nm. A 60 nm thin layer of pure silver is coated on the taper surface in order to investigate its performance using a fiber optical SPR sensor.  Using this SPR fiber sensor measurement of the lead concentrations in water ranging from 0.1 to 10 part per million (ppm) is reported.

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Type of Study: Research | Subject: Special
Received: 2016/05/2 | Revised: 2016/06/13 | Accepted: 2016/08/28 | Published: 2017/01/28

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