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Fiber bending sensor based on a two mode fiber
Author(s) -
Chen Daru,
Xu Fei,
Hu Gufeng,
Chen Lingxia,
Peng Baojin
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26734
Subject(s) - fiber , materials science , bending , dispersion shifted fiber , mode field diameter , polarization maintaining optical fiber , mode volume , fiber optic sensor , plastic optical fiber , graded index fiber , optics , core (optical fiber) , mode (computer interface) , single mode optical fiber , optical fiber , physics , computer science , composite material , operating system
A fiber bending sensor by splicing a segment of two mode fiber to the single mode fiber is proposed.The two mode fiber with an external diameter (fiber core diameter) of 145 μm (17.65 μm) can only support the fundamental mode (LP 01 mode) and the second mode (LP 11 mode), which results in an interfering spectrum of the fiber bending sensor. The interfering spectrum has an extinction ratio of about 10 dB in 1.55 μm window, and the fiber bending curvature is measured corresponding to the shift of the interfering spectrum. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1047–1049, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26734