Reduction of harmonic distortion in injection-locked semiconductor lasers

S. K. Hwang, J. M. Liu, J. K. White

研究成果: Conference article同行評審

1 引文 斯高帕斯(Scopus)


The characteristics of the second harmonic distortion (SHD) and the third harmonic distortion (THD) are experimentally investigated in a semiconductor laser subject to external optical injection. Compared with the free-running laser, both SHD and THD in the injection-locked semiconductor laser are observed to reduce significantly and equally for a large range of modulation power at a modulation frequency of 5 GHz, which are 15-dB and 23-dB decreased, respectively. At a fixed modulation power of 6 dBm, the reduction of SHD and THD is, however, found to vary with modulation frequency. The reduction of SHD is more substantial at around one-half of the relaxation resonance frequency of the free-running laser. The decrease in THD is, however, more significant at around one-half and one-third of the relaxation resonance frequency of the free-running laser. The reduction in harmonic distortions is also found to vary with the operational parameters of the injection signal. The reduction of SHD increases with the decreasing injection strength and the negatively decreasing detuning frequency, while that of THD shows a completely opposite behavior.

頁(從 - 到)88-97
期刊Proceedings of SPIE - The International Society for Optical Engineering
發行號PART 1
出版狀態Published - 2004 十二月 1
事件Photonics North 2004: International Conference on Applications of Photonic Technology, ICAPT - Ottawa, Ont., Canada
持續時間: 2004 九月 262004 九月 29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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