Volume 16 Issue 2
Mar.  2023
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YOU Dao-ming, TAN Man-qing, GUO Wen-tao, CAO Ying-chun, WANG Zi-jie, YANG Qiu-rui, WAN Li-li, WANG Xin, LIU Heng. Design and fabrication of an optical film for fiber bragg grating external cavity diode lasers[J]. Chinese Optics, 2023, 16(2): 447-457. doi: 10.37188/CO.EN.2022-0010
Citation: YOU Dao-ming, TAN Man-qing, GUO Wen-tao, CAO Ying-chun, WANG Zi-jie, YANG Qiu-rui, WAN Li-li, WANG Xin, LIU Heng. Design and fabrication of an optical film for fiber bragg grating external cavity diode lasers[J]. Chinese Optics, 2023, 16(2): 447-457. doi: 10.37188/CO.EN.2022-0010

Design and fabrication of an optical film for fiber bragg grating external cavity diode lasers

Funds:  Supported by the Science & Technology Program of the State Grid Corporation of China Co., Ltd. (No. 5700-202058482A-0-0-00)
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  • Author Bio:

    YOU Dao-ming (1998—), born in Dexing, Jiangxi Province, got his BS from Harbin Institute of Technology in 2020. Now he is a postgraduate student at the University of Chinese Academy of Science and Institute of semiconductors. His research focuses on semiconductor optoelectronic devices and integration technology. E-mail: youdaoming20@semi.ac.cn

    TAN Man-qin (1967—), born in Hengyang, Hunan Province, got his Ph.D. from the Beijing Institute of Technology in 1996. Now he is a research fellow at the Institute of Semiconductors, CAS, and he is also a professor at the University of Chinese Academy of Science. His research focuses on semiconductor optoelectronic devices and modules for sensing. E-mail: mqtan@semi.ac.cn

    GUO Wen-tao (1987—), born in Hengyang, Shanxi Province, got his Ph.D. from the Institute of Semiconductors in 2014. Now he is a research assistant at the Institute of Semiconductors, CAS. His research focuses on semiconductor optoelectronic devices and modules for sensing. E-mail: wtguo@semi.ac.cn

  • Corresponding author: mqtan@semi.ac.cnwtguo@semi.ac.cn
  • Received Date: 07 Jul 2022
  • Rev Recd Date: 22 Jul 2022
  • Available Online: 27 Sep 2022
  • The cavity surface optical film is one of the most crucial components of the fiber bragg grating External Cavity diode Laser (ECL). Although, the Plane Wave Method (PWM) is widely used in the optical film preparation, it is not an ideal design method when applied in ECL preparation. The Finite-Difference Time-Domain (FDTD) method is used to analyze this problem by taking the effect of facet dimensions and structure into account. According to the simulation, PWM suffers from poor reflectivity and deviation of the reflection curve, which significantly affects performance. Therefore, the optical film design is optimized and verified by experiments. Magnetron sputtering is used to fabricate the optical film, which is then applied to ECL. The measurement results show that the reflectivity of Anti-Reflection (AR) film is reduced by 30% after optimization, while the reflectivity of High-Reflection (HR) film increased to 96%. The prepared ECL’s fiber output power exceeds 650 mW. In this paper, the optical film suitable for ECL is designed and fabricated, and provides a reference for optical films in ECLs and other semiconductor optoelectronic devices.

     

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