THz optical pulses from a coupled-cavity quantum-dot laser

被引：7
|
作者：
Liu, J. [1 ]
Lu, Z. G. [1 ]
Poole, P. J. [1 ]
Barrios, P. J. [1 ]
Poitras, D. [1 ]
Jiao, Z. [1 ,2 ]
Zhang, X. P. [2 ]
机构：
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
[2] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada
来源：
OPTICS COMMUNICATIONS | 2012年 / 285卷 / 06期
关键词：
Quantum-dot laser; Mode locking; THz repetition rate; Four-wave mixing; Fiber Bragg grating; MODE-LOCKING;
D O I：
10.1016/j.optcom.2011.10.037
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical pulses are generated from a coupled-cavity quantum-dot (QD) laser consisting of a short QD-waveguide Fabry-Perot (F-P) cavity and three long external fiber Bragg grating (FBG) cavities. When the laser is biased at low operation current, the feedback from the external cavities dominates and laser pulses have a 1.01 THz repetition rate, determined by the equal frequency difference of the three FBGs. We are thus able to decouple the repetition rate of a mode-locked laser from the cavity length. With much higher bias current, the QD F-P cavity dominates and the repetition rate is switched to 43.8 GHz, defined by the length of the F-P cavity. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1323 / 1325
页数：3
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