Author:
Cao Ye ,Pei Yong-Wei ,Tong Zheng-Rong ,
Abstract
A local micro-structured long-period fiber grating (LMSLPFG) is proposed and investigated experimentally. The LMSLPFG is fabricated by using hydrofluoric acid (HF) to partially etch a standard long-period fiber grating (LPFG), thereby forming a local defect in the cladding. The theoretical analysis and experimental results show that partially etching will change the effective refractive index modulation in the cladding mode, which equivalently introduces a phase shift into the part of defect and manifests, in the spectrogram, as openning a transmission window between the stopbands, forming two transmission stopbands and one transmission passband. On this basis we study the temperatures and bending characteristics of the two stopbands and one passband. The results show that the temperature sensitivities of the two stopbands and one passband are all approximately 0.05 nm/℃; the bending sensitivity of the passband (2.61 nm/m-1) is less than those of two stopbands (4.71 nm/m-1). Thus by using the sensitive matrix, we can simultaneously measure the curvature and temperature, with only one grating used.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Reference18 articles.
1. Hiroshi T, Kei U 2009 Sensors 9 4559
2. Sun A, Wu Z 2012 Opt. Engng. 51 04402
3. Chan C C, Tan K M, Tay C M, Tjin S C 2004 Proc. SPIE 5590 105
4. Zhou Y, Zhou W, Chan C C, Wong W C, Shao L Y, Cheng J, Dong X Y 2011 Opt. Commun. 284 5669
5. Sun J, Chan C C, Tan K M, Dong X Y, Shum P 2007 Sensor Actuat. A: Phys. 137 262
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