Nonlinear distortion in directly modulated semiconductor lasers subject to external optical injection

Sheng-Kwang Hwang, Jian Ming Tian, Chih Feng Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nonlinear distortion in injection-locked semiconductor lasers under direct modulation is numerically studied as a function of operational parameters. Significant reduction up to 25 dB in nonlinear distortion is observed compared with the free-running condition. The reduction in distortion is rather uniform over a broad range of modulation power at a fixed modulation frequency. The distortion reduction, however, varies dramatically with modulation frequency at a fixed modulation power due to the resonance effect. The reduction in distortion generally decreases with bias current level. The reduction in nonlinear distortion as a function of injection strength and detuning frequency is observed for the entire region of stable injection locking, suggesting that the injection locking scheme is a very effective method for nonlinear distortion reduction. However, the reduction for different nonlinear distortions is different and complicated, implying a trade-off for reduction in different nonlinear distortions to simultaneously happen.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi-Conference on Wireless and Optical Commun., OCSN 2005
EditorsA.O. Fapojuwo
Pages19-24
Number of pages6
Publication statusPublished - 2005 Dec 1
EventIASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi-Conference on Wireless and Optical Commun., OCSN 2005 - Banff, AB, Canada
Duration: 2005 Jul 192005 Jul 21

Publication series

NameProceedings of the IASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi- Conference on Wireless and Optical Communications, OCSN 2005

Other

OtherIASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi-Conference on Wireless and Optical Commun., OCSN 2005
CountryCanada
CityBanff, AB
Period05-07-1905-07-21

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Hwang, S-K., Tian, J. M., & Lin, C. F. (2005). Nonlinear distortion in directly modulated semiconductor lasers subject to external optical injection. In A. O. Fapojuwo (Ed.), Proceedings of the IASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi-Conference on Wireless and Optical Commun., OCSN 2005 (pp. 19-24). (Proceedings of the IASTED International Conference on Optical Communication Systems and Networks, as part of the Fifth IASTED Int. Multi- Conference on Wireless and Optical Communications, OCSN 2005).