This document summarizes a research paper on nano-optical fiber evanescent field sensors. The paper numerically presents a sensor based on a modified cladding section of an optical fiber. It studies how the numerical aperture, core radius, wavelength, and diameter of submicron fibers affect the sensor's sensitivity. The results show that sensitivity increases with higher numerical aperture and smaller core radius. For uniform core fibers, a higher numerical aperture increases sensitivity by enhancing the evanescent absorption field. Therefore, fibers with high numerical aperture are better for evanescent wave absorption sensor design.

1. 10/30/13 Nano-Optical Fiber Evanescent Field Sensors
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Home > Advanced Materials Research > Advanced Materials Engineering and Technology > Nano-Optical
Fiber Evanescent Field Sensors
Paper Title:
Periodical Advanced Materials Research (Volume 626)
Main Theme Advanced Materials Engineering and Technology
Edited by
Mohd Mustafa Al Bakri Abdullah, Liyana
Jamaludin, Rafiza Abdul Razak, Zarina
Yahya and Kamarudin Hussin
Pages 1027-1032
DOI 10.4028/www.scientific.net/AMR.626.1027
Citation
Radhi M. Chyad et al., 2012, Advanced
Materials Research, 626, 1027
Online since December, 2012
Authors Radhi M. Chyad, Mohd Zubir Mat Jafri, Kamarulazizi
Ibrahim
Keywords
Biosensor, Chemical Sensors, Fiber Optic
Sensor,Nanofiber Optic
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The
nanofiber optic evanescent field sensor based on a changed cladding
part as a sensor presented numerically. The influences of numerical opening, core radius of
the fiber, the wavelength is effected on the light source and the submicron fiber on the
sensors are promise to studied in this work. The results pointed out the sensitivity of the
sensor increases when the numerical opening of the fiber is increases and the core radius
is decreases. The NA of the fiber affects the sensitivity of the sensor. In the uniform core
fiber, the increase in the NA increases the sensitivity of the sensor. Therefore, one should
choose a fiber with high NA for the design of an evanescent-wave-absorption sensor if the
core of the sensing segment uniform in diameter, so that the increase in the penetration
depth or number of ray reflections or both, increases the evanescent absorption field and
hence the sensitivity of the sensors. Keywords: fiber optic sensor, chemical sensors,
biosensors, nanofiber optic.
Abstract
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2. 10/30/13 Nano-Optical Fiber Evanescent Field Sensors
www.scientific.net/AMR.626.1027 2/2
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