Optical microwave generation using two parallel DFB lasers integrated with Y-branch waveguide coupler
Xie Hong-Yun(谢红云)a)b)†, Wang Lu(王路)b), Zhao Ling-Juan(赵玲娟)b), Zhu Hong-Liang(朱洪亮)b), and Wang Wei(王圩)b)
a College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100022, China; b National Research Center of Optoelectronic Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
Abstract A new device of two parallel distributed feedback (DFB) lasers integrated monolithically with Y-branch waveguide coupler was fabricated by means of quantum well intermixing. Optical microwave signal was generated in the Y-branch waveguide coupler through frequency beating of the two laser modes coming from two DFB laser in parallel, which had a small difference in frequency. Continuous rapid tuning of optical microwave signal from 13 to 42GHz were realized by adjusting independently the driving currents injected into the two DFB lasers.
Received: 16 October 2006
Revised: 14 November 2006
Accepted manuscript online:
PACS:
84.40.-x
(Radiowave and microwave (including millimeter wave) technology)
Fund: Project supported by the
National Natural Science Foundation of China (Grant No 90401025).
Cite this article:
Xie Hong-Yun(谢红云), Wang Lu(王路), Zhao Ling-Juan(赵玲娟), Zhu Hong-Liang(朱洪亮), and Wang Wei(王圩) Optical microwave generation using two parallel DFB lasers integrated with Y-branch waveguide coupler 2007 Chinese Physics 16 1459
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