Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5657
Title: Optical fiber Fabry-Perot interferometer cavity fabricated by femtosecond laser micromachining and fusion splicing for refractive index sensing
Authors: Liao, C
Hu, TY
Wang, D 
Keywords: Fabry-Perot interferometers
Optical fiber fabrication
Optical fibers
Issue Date: 24-Sep-2012
Publisher: Optical Society of America
Source: Optical express, 24 Sept. 2012, v. 20, no. 20, p. 22813-22818 How to cite?
Journal: Optical express 
Abstract: We demonstrate a fiber in-line Fabry-Perot interferometer cavity sensor for refractive index measurement. The interferometer cavity is formed by drilling a micro-hole at the cleaved fiber end facet, followed by fusion splicing. A micro-channel is inscribed by femtosecond laser micromachining to vertically cross the cavity to allow liquid to flow in. The refractive index sensitivity obtained is ~994 nm/RIU (refractive index unit). Such a device is simple in configuration, easy for fabrication and reliable in operation due to extremely low temperature cross sensitivity of ~4.8 × 10⁻⁶ RIU/°C.
URI: http://hdl.handle.net/10397/5657
EISSN: 1094-4087
DOI: 10.1364/OE.20.022813
Rights: © 2012 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-20-20-22813. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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