In situ monitoring of photostriction in chalcogenide glass film using fiber Bragg grating sensors

IF 6.7 3区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Optomechatronics Pub Date : 2017-01-02 DOI:10.1080/15599612.2017.1374490

Sivakumar Gayathri, G. S. Varma, Gagandeep Singh, B. N. Shivananju, S. Sridevi, S. Umapathy, S. S. Gorthi, S. Asokan

引用次数: 2

Abstract

ABSTRACT The reversible photostriction (photomechanical strain) in Ge35S65 chalcogenide thin film deposited by a solvent casting method has been monitored using a fiber Bragg grating (FBG) sensor. The shift in Bragg wavelength is used as a probing parameter to quantitatively measure the photoinduced strain arising because of structural modifications in these films under illumination. Exposure to band gap light (405 nm) and above band gap light (302 and 254 nm) leads to a reversible photostriction effect of the order of 100 µε. The present study shows that FBG sensors can be used to effectively measure the optomechanical actuation in chalcogenide films caused by the reversible photostriction effect in the visible and ultraviolet wavelength region.

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利用光纤光栅传感器原位监测硫系玻璃薄膜的光致伸缩

摘要利用光纤布拉格光栅（FBG）传感器对溶剂浇铸法沉积的Ge35S65硫族化合物薄膜的可逆光致伸缩（光机械应变）进行了监测。布拉格波长的偏移被用作探测参数，以定量测量由于这些膜在光照下的结构修饰而产生的光致应变。暴露于带隙光（405 nm）和带隙以上的光（302和254 nm）导致100量级的可逆光致伸缩效应 µε。本研究表明，FBG传感器可用于有效测量在可见光和紫外波长范围内由可逆光致伸缩效应引起的硫族化物薄膜的光机械致动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Optomechatronics 工程技术-工程：电子与电气

CiteScore

9.30

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： International Journal of Optomechatronics publishes the latest results of multidisciplinary research at the crossroads between optics, mechanics, fluidics and electronics. Topics you can submit include, but are not limited to: -Adaptive optics- Optomechanics- Machine vision, tracking and control- Image-based micro-/nano- manipulation- Control engineering for optomechatronics- Optical metrology- Optical sensors and light-based actuators- Optomechatronics for astronomy and space applications- Optical-based inspection and fault diagnosis- Micro-/nano- optomechanical systems (MOEMS)- Optofluidics- Optical assembly and packaging- Optical and vision-based manufacturing, processes, monitoring, and control- Optomechatronics systems in bio- and medical technologies (such as optical coherence tomography (OCT) systems or endoscopes and optical based medical instruments)