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Novel method for measurement of effective cavity length of DBR fiber

Novel method for measurement of effective cavity length of DBR fiber
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摘要 A novel method to measure the effective cavity length of distributed Bragg reflector（DBR） fiber laser with fiber Bragg grating（FBG） Fabry-Perot cavity as the resonator is proposed.The effective cavity length of DBR fiber laser is accurately measured by measuring the frequency spacing of two adjacent longitudinal modes in the cavity without the precise physical length of FBGs.The measuring accuracy as high as 10^（-5） mm can be obtained by setting the resolution bandwidth of the spectrum analyzer. A novel method to measure the effective cavity length of distributed Bragg reflector（DBR） fiber laser with fiber Bragg grating（FBG） Fabry-Perot cavity as the resonator is proposed.The effective cavity length of DBR fiber laser is accurately measured by measuring the frequency spacing of two adjacent longitudinal modes in the cavity without the precise physical length of FBGs.The measuring accuracy as high as 10^（-5） mm can be obtained by setting the resolution bandwidth of the spectrum analyzer.
作者 冀青 马秀荣 孙静 张昊 姚颖
机构地区 School of Computer and Communication Engineering Tianjin University of Technology Tianjin Key Laboratory of Film Electronic and Communication Devices Institute of Modern Optics Nankai University
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2010年第4期398-400,共3页 中国光学快报（英文版）
基金 supported by the Tianjin Key Project of Applied and Basic Research Programs(No. 07JCZDJC06000) the Key Project of Ministry of Education of China(No.206006)
关键词 Fiber Bragg gratings Fiber lasers Fibers Spectrum analyzers Fiber Bragg gratings Fiber lasers Fibers Spectrum analyzers
分类号 TN248 [电子电信—物理电子学]
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参考文献12

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Chinese Optics Letters
2010年 第4期

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