Narrow-Linewidth Tunable Lasers With Retro-Reflective External Cavity

被引:10
作者
Wang, Ning [1 ]
Feng, Ming [2 ]
Feng, Zhiqing [3 ]
Lam, Man Ying [1 ]
Gao, Lei [4 ]
Chen, Bo [4 ]
Liu, A. Q. [5 ]
Tsang, Yuen Hong [1 ]
Zhang, Xuming [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
[2] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
[3] Dalian Nationalities Univ, Dept Phys, Dalian 116600, Peoples R China
[4] Huawei Technol Ltd Co, Shenzhen 25536, Peoples R China
[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
关键词
Digital coherent communications; external cavity tunable laser; laser tuning; narrow linewidth;
D O I
10.1109/LPT.2012.2210200
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This letter presents the development of a fiber-pigtailed narrow-linewidth tunable laser that utilizes a retro-reflective optical system to construct the external cavity. For wavelength selection, a fixed etalon is employed to provide the International Telecommunication Union (ITU) grid with the 50-GHz spacing and a lead zirconate titanate-actuated tunable filter to select one ITU mode to resonate. The laser device measures a linewidth of 7 kHz, an output power of 14 dBm, a sidemode suppression ratio (SMSR) >55 dB, a tuning range >40 nm, and a response speed similar to 2 ms. The superior performance well demonstrates the advantages of external cavity construction for the narrow-linewidth tunable lasers and may find applications in the emerging digital coherent communications.
引用
收藏
页码:1591 / 1593
页数:3
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