中国物理B ›› 2023, Vol. 32 ›› Issue (9): 94204-094204.doi: 10.1088/1674-1056/acc8c1

• • 上一篇    下一篇

High-speed directly modulated distributed feedback laser based on detuned loading and photon-photon resonance effect

Yun-Shan Zhang(张云山)1, Yi-Fan Xu(徐逸帆)1, Ji-Lin Zheng(郑吉林)2, Lian-Yan Li(李连艳)1, Tao Fang(方涛)3, and Xiang-Fei Chen(陈向飞)3,†   

  1. 1 College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    2 College of Communications Engineering, PLA Army Engineering University, Nanjing 210007, China;
    3 College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
  • 收稿日期:2022-12-30 修回日期:2023-03-17 接受日期:2023-03-30 发布日期:2023-08-23
  • 通讯作者: Xiang-Fei Chen E-mail:chenxf@nju.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFB2205804), the National Natural Science Foundation of China (Grant Nos. 61974165 and Grant 61975075), and the National Natural Science Foundation of China for the Youth, China (Grant No. 62004105).

High-speed directly modulated distributed feedback laser based on detuned loading and photon-photon resonance effect

Yun-Shan Zhang(张云山)1, Yi-Fan Xu(徐逸帆)1, Ji-Lin Zheng(郑吉林)2, Lian-Yan Li(李连艳)1, Tao Fang(方涛)3, and Xiang-Fei Chen(陈向飞)3,†   

  1. 1 College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    2 College of Communications Engineering, PLA Army Engineering University, Nanjing 210007, China;
    3 College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
  • Received:2022-12-30 Revised:2023-03-17 Accepted:2023-03-30 Published:2023-08-23
  • Contact: Xiang-Fei Chen E-mail:chenxf@nju.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFB2205804), the National Natural Science Foundation of China (Grant Nos. 61974165 and Grant 61975075), and the National Natural Science Foundation of China for the Youth, China (Grant No. 62004105).

摘要: A monolithic integrated two-section distributed feedback (TS-DFB) semiconductor laser for high-speed direct modulation is proposed and analyzed theoretically. The grating structure of the TS-DFB laser is designed by the reconstruction-equivalent-chirp (REC) technique, which can reduce the manufacturing cost and difficulty, and achieve high wavelength controlling accuracy. The detuned loading effect and the photon-photon resonance (PPR) effect are utilized to enhance the modulation bandwidth of the TS-DFB laser, exceeding 37 GHz, while that of the conventional one-section DFB laser is only 16 GHz. When the bit rate of the non-return-to-zero (NRZ) signal reaches 55 Gb/s, a clear eye diagram with large opening can still be obtained. These results show that the proposed method can enhance the modulation bandwidth of DFB laser significantly.

关键词: directly modulated laser (DML), detuned loading effect, photon-photon resonance (PPR) effect, reconstruction-equivalent-chirp (REC) technique

Abstract: A monolithic integrated two-section distributed feedback (TS-DFB) semiconductor laser for high-speed direct modulation is proposed and analyzed theoretically. The grating structure of the TS-DFB laser is designed by the reconstruction-equivalent-chirp (REC) technique, which can reduce the manufacturing cost and difficulty, and achieve high wavelength controlling accuracy. The detuned loading effect and the photon-photon resonance (PPR) effect are utilized to enhance the modulation bandwidth of the TS-DFB laser, exceeding 37 GHz, while that of the conventional one-section DFB laser is only 16 GHz. When the bit rate of the non-return-to-zero (NRZ) signal reaches 55 Gb/s, a clear eye diagram with large opening can still be obtained. These results show that the proposed method can enhance the modulation bandwidth of DFB laser significantly.

Key words: directly modulated laser (DML), detuned loading effect, photon-photon resonance (PPR) effect, reconstruction-equivalent-chirp (REC) technique

中图分类号:  (Lasers)

  • 42.55.-f
42.55.Px (Semiconductor lasers; laser diodes)