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Title: Selected cladding mode recoupling based on cascaded LPG and TFBG for satellites vibration environment monitoring
Authors: Liu, W
Guo, T
Liu, C
Tam, HY 
Keywords: Cladding mode recoupling
Long period grating
Tilted fiber bragg grating
Vibration environment monitoring
Issue Date: 2015
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, v. 9679, 967909 How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: Selected cladding mode recoupling between a long period grating (LPG) and a tilted fiber Bragg grating (TFBG) is demonstrated for satellites vibration environment monitoring. The mode recoupling characteristic between LPGs with different resonance wavelengths and TFBGs with different tilt angles are investigated. Strong coupling occurs between the two associated cladding modes of the same order over the overlapped resonance bands of the two gratings. Suppression ratio of over 20 dB between the recoupled cladding mode and the core reflection mode is achieved when the resonance wavelength of the LPG matches the Bragg wavelength of the TFBG. The present sensor has the features of cost-effective power detection and tip-reflection sensing ability, and give a remarkably simple and elegant approach to dynamic vibration monitoring.
ISBN: 9781628419047
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.2197794
Appears in Collections:Conference Paper

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