光学精密工程2011，Vol.19Issue(1)：1-9,9.DOI:10.3788/OPE.20111901.0001
双芯光纤马赫-曾德尔干涉仪的温度特性
Temperature characteristic of in-fiber Mach-Zehnder interferometer using twin-core fiber
摘要
Abstract
A Mach-Zehnder interferometer using a Twin-core Fiber(TCF) was researched for temperature sensing and a comb-filter based on the in-fiber Mach-Zehnder Interferometer (MZI) was fabricated by splicing a section of single mode TCF between two single mode fibers (SMFy). The Free Spectral Range(FSR) of the transmission spectrum for the device versa the wavelength, the length of TCF and the effective index difference between the two cores were analyzed and the temperature characteristic of the device was experimentally tested. The tested results indicate that the transmission spectrum of the device has a red shift and a quadratic curve with the temperature increasing. Under the same temperature difference, the wavelength shifts are different at different wavelengths and the wavelength shift at short wavelength is smaller than that at longer wavelength. The sensitivity of the device is different at different wavelengths, and it is proportional to the temperature at a fixed wavelength. Furthermore,the insertion loss of the device is decreased effectively by tapering the splicing regions between SMFs and TCF. Finally a device with insertion loss about 7 dB was implemented.This device is relatively small, simple, compatible and suitable for fiber optic temperature sensors.关键词
温度传感/光纤传感/马赫-曾德尔干涉仪/双芯光纤/梳状滤波器Key words
temperature sensing/ fiber optic sensing/ Mach-Zehnder Interferometer(MZI) / Twin-core Fiber(TCF) /j comb-filter分类
电子信息工程引用本文复制引用
范林勇,江微微,赵瑞峰,裴丽,简水生..双芯光纤马赫-曾德尔干涉仪的温度特性[J].光学精密工程,2011,19(1):1-9,9.基金项目
国家973重点基础研究发展规划资助项目(No.2010CB328206) （No.2010CB328206）
国家863高技术研究发展计划资助项目(No.2008AA01Z215) （No.2008AA01Z215）
国家自然科学基金重点资助项目(No.60837002) （No.60837002）
