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Frequency noise performance improvement of mutually injection-locked semiconductor lasers

Ma, Weichao ; Xiong, Bing ; Sun, Changzheng ; Ke, Xu ; Wang, Jian ; Wang, Lai ; Hao, Zhibiao ; Han, Yanjun ; Li, Hongtao ; Yu, Jiadong ; Luo, Yi

Applied physics express, 2019-05, Vol.12 (5), p.52002 [Periódico revisado por pares]

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Título:
Frequency noise performance improvement of mutually injection-locked semiconductor lasers
Autor: Ma, Weichao ; Xiong, Bing ; Sun, Changzheng ; Ke, Xu ; Wang, Jian ; Wang, Lai ; Hao, Zhibiao ; Han, Yanjun ; Li, Hongtao ; Yu, Jiadong ; Luo, Yi
Assuntos: frequency noise ; mutual coupling ; semiconductor lasers
É parte de: Applied physics express, 2019-05, Vol.12 (5), p.52002
Notas: APEX-101317.R1
Descrição: The frequency noise characteristic of lasers under mutual injection locking is investigated. Pronounced frequency noise suppression is demonstrated for two distributed feedback lasers mutually coupled through a fiber link with 60 ns delay, confirmed by both local oscillator heterodyne and delayed self-heterodyne methods. Locking can be secured for the weak-coupling regime and a locking map is derived. The frequency noise of the laser under mutual injection locking is found to improve with increasing coupling strength or injection current. The single-sided white frequency noise of the laser is estimated to be below 3 Hz2 Hz−1, corresponding to an intrinsic linewidth narrower than 9.4 Hz.
Editor: IOP Publishing
Idioma: Inglês

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