Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4755
Title: Photonic bandgap fiber tapers and in-fiber interferometric sensors
Authors: Ju, J
Ma, L
Jin, W 
Hu, Y
Keywords: Energy gap
Fiber optic components
Fibers
Interferometers
Interferometry
Optical waveguides
Silica
Spontaneous emission
Temperature measurement
Issue Date: 15-Jun-2009
Publisher: Optical Society of America
Source: Optics letters, 15 June 2009, v. 34, no. 12, p. 1861-1863 How to cite?
Journal: Optics letters 
Abstract: Nonadiabatic tapers in hollow-core air-silica photonic bandgap fibers (PBFs) were fabricated by the use of a fiber fusion splicer. In addition to the well-known scaling down of fiber dimensions, the innermost rings of air holes were found collapsed or significantly deformed, which results in almost doubling the diameter of the hollow core in the tapered region. The tapering of the PBF causes coupling of the fundamental core mode to a surface mode with ~10% higher effective mode index. An in-fiber core-surface mode interferometer was constructed by cascading two such tapers along the PBF. The interferometer was experimentally demonstrated for strain and temperature measurement, and the sensitivities of the interferometric peak wavelength to strain and temperature are measured to be −0.64 pm/με and 495.6 pm/(°C m), respectively.
URI: http://hdl.handle.net/10397/4755
ISSN: 0146-9592
DOI: 10.1364/OL.34.001861
Rights: © 2009 Optical Society of America. This paper was published in Optics Letters 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/ol/abstract.cfm?URI=ol-34-12-1861. 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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