Effect of input pulse shape on FSK optical coherent communication system

Mehdi Shadaram; Eugene Britto John

doi:10.1117/12.24667

1 January 1991 Effect of input pulse shape on FSK optical coherent communication system

Mehdi Shadaram, Eugene Britto John

Proceedings Volume 1365, Components for Fiber Optic Applications V; (1991) https://doi.org/10.1117/12.24667
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

Directly modulated semiconductor lasers exhibit a dynamic wavelength shift arising from the gain-induced variations of the laser refractive index. It is an accepted fact that the input current pulse shape plays an important role in the frequency chirping (wavelength shift) of directly modulated semiconductor lasers. This paper gives large signal analysis of the dynamic frequency chirping due to the gain-induced variation of the laser refractive index for four different input current pulse shapes. The laser is biased above threshold for the analysis. The rate equations are solved numerically and the frequency chirping and carrier density variations for the four input current pulse shapes are compared.

Citation Download Citation

Mehdi Shadaram and Eugene Britto John "Effect of input pulse shape on FSK optical coherent communication system", Proc. SPIE 1365, Components for Fiber Optic Applications V, (1 January 1991); https://doi.org/10.1117/12.24667

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