Potential bending sensor based on small-period long-period gratings

Changle Wang, Yunhe Zhao, Fangcheng Shen, Zhijun Yan, Biqiang Jiang, Kaiming Zhou, Xuewen Shu, Lin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. Small-period long-period gratings (SP-LPGs) have been fabricated by a UV laser of 244 nm in hydrogen-loaded single mode fibers (SMFs). The period of the SP-LPG is determined to be 25 μm by a custom-designed amplitude mask, which is placed close to the SMF. The fabricated SP-LPGs were annealed at 80°C for 48 h to stabilize the property. The transmission spectrum measured with non-polarized light clearly shows a series resonances of dual-peak pairs (DPPs). Fig. 1(a) bottom trace depicts the typical transmission spectrum showing two pairs of dual-peaks at1474.7 nm and 1481.0 nm as one pair and 1575.6 nm and 1582.1 nm as the other pair, which agrees well with the simuSmall-period long-period gratings (SP-LPGs) have been fabricated by a UV laser of 244 nm in hydrogen-loaded single mode fibers (SMFs). The period of the SP-LPG is determined to be 25 μm by a custom-designed amplitude mask, which is placed close to the SMF. The fabricated SP-LPGs were annealed at 80°C for 48 h to stabilize the property. The transmission spectrum measured with non-polarized light clearly shows a series resonances of dual-peak pairs (DPPs). Fig. 1(a) bottom trace depicts the typical transmission spectrum showing two pairs of dual-peaks at1474.7 nm and 1481.0 nm as one pair and 1575.6 nm and 1582.1 nm as the other pair, which agrees well with the simulation in ref [1], in which only cladding modes with the lowest azimuthal order are taken into account. Coupling to high azimuthal order cladding modes should be zero in a circularly symmetrical refractive index (RI) perturbation for the SP-LPGs [2], thus we see from Fig. 1(a) very weak DPP appears around the 1525nm.lation in ref [1], in which only cladding modes with the lowest azimuthal order are taken into account. Coupling to high azimuthal order cladding modes should be zero in a circularly symmetrical refractive index (RI) perturbation for the SP-LPGs [2], thus we see from Fig. 1(a) very weak DPP appears around the 1525nm.
Original languageEnglish
Title of host publicationThe European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
PublisherOptical Society of America
VolumePart F82-CLEO_Europe 2017
ISBN (Electronic)9781557528209
Publication statusPublished - 29 Jun 2017
EventThe European Conference on Lasers and Electro-Optics, CLEO_Europe 2017 - Munich, Germany
Duration: 25 Jun 201729 Jun 2017

Conference

ConferenceThe European Conference on Lasers and Electro-Optics, CLEO_Europe 2017
CountryGermany
CityMunich
Period25/06/1729/06/17

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  • Cite this

    Wang, C., Zhao, Y., Shen, F., Yan, Z., Jiang, B., Zhou, K., Shu, X., & Zhang, L. (2017). Potential bending sensor based on small-period long-period gratings. In The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017 (Vol. Part F82-CLEO_Europe 2017). Optical Society of America.