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Title: Long period gratings written into a photonic crystal fibre by a femtosecond laser as directional bend sensors
Authors: Allsop, Thomas D P 
Kalli, Kyriacos 
Zhou, Kaiming
Lai, Yicheng
Smith, Graham N. 
Dubov, Mykhaylo V.
Webb, David J. 
Bennion, Ian 
Category: Electrical Engineering, Electronic Engineering, Information Engineering
Field: Engineering and Technology
Issue Date: 2008
Publisher: Elsevier B.V.
Source: Optics Communications. Volume 281, Issue 20, 15 October 2008, Pages 5092-5096
Abstract: A series of symmetric and asymmetric LPGs were inscribed in photonic crystal fibre by a low repetition rate femtosecond laser system. The asymmetric LPGs were found to be spectrally sensitive to bend orientation, with some of the attenuation bands producing both red and blue wavelength shifts, whilst the symmetric devices produced only a unidirectional wavelength shift. Both sets of devices displayed strong polarisation dependence.
ISSN: 0030-4018
Rights: © 2008 Elsevier B.V.
Type: Article
Appears in Collections:Άρθρα/Articles

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