Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12379
Title: Slightly tapered optical fiber with inner air-cavity as a miniature and versatile sensing device
Authors: Chen, HF
Wang, DN 
Hong, W
Keywords: Air-cavity
Fiber sensor
Refractive index sensing
Strain sensing
Temperature sensing
Issue Date: 2014
Publisher: Institute of Electrical and Electronics Engineers
Source: Journal of lightwave technology, 2014, v. 33, no. 1, 6966723, p. 62-68 How to cite?
Journal: Journal of lightwave technology 
Abstract: A long-standing goal of optical fiber sensors is the development of a miniature and versatile optical fiber device, which is capable of performing multiple sensing functions, and supporting a simple and efficient system. Here, we demonstrate an elegant way of achieving such a device by use of an inner air-cavity in a slightly tapered optical fiber. Owing to the small size of only a few tens microns and inner cavity structure, a spatially precise 'point sensing' with high sensitivity and good robustness can be readily achieved. The refractive index, strain, and temperature sensitivities obtained are ?1060 nm/RIU (refractive index unit), 22.5 pm/£g£`, and 80 pm/¢XC, respectively. The inner air-cavity-based device is flexible, ultracompact, versatile, and highly efficient, which provides a promising new way for a wide range of optical fiber sensing applications.
URI: http://hdl.handle.net/10397/12379
ISSN: 0733-8724
EISSN: 1558-2213
DOI: 10.1109/JLT.2014.2372057
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