Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.256369
Title: Simulation of distortion in multi-carrier subcarrier multiplexed optical communication systems employing direct intensity modulation of semiconductor lasers
Authors: Haldar, M.K. 
Garg, H.K. 
Chia, K.B.
Mendis, F.V.C. 
Keywords: CATV
Distortion
Intensity modulation
Overmodulation
Rate equations
Semiconductor lasers
Subcarrier multiplexing
Issue Date: 1996
Source: Haldar, M.K., Garg, H.K., Chia, K.B., Mendis, F.V.C. (1996). Simulation of distortion in multi-carrier subcarrier multiplexed optical communication systems employing direct intensity modulation of semiconductor lasers. Proceedings of SPIE - The International Society for Optical Engineering 2919 : 79-88. ScholarBank@NUS Repository. https://doi.org/10.1117/12.256369
Abstract: Direct intensity modulation of semiconductor lasers in subcarrier multiplexed (SCM) optical fibre communication systems is of interest because of its simplicity and the possibility of integration of the drive electronics with the laser diode. Direct modulation also produces distortion which degrades system performance. In this paper, we extend a static numerical simulation method for multi-carrier SCM systems to a dynamic simulation employing rate equations. We first show that the results of our simulation agree with analytical results for multi-carrier SCM systems obtained from perturbation theory in the absence of optical reflection into the semiconductor laser. We proceed with the calculation of distortion in the presence of weak reflections. We show that the distortion is lower than what is expected from previous analytical considerations for two subcarriers. Our simulation can also take into account the effect of overmodulation in a dynamic manner. However, our simulation does not take into account the distortion due to device imperfections.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/72920
ISSN: 0277786X
DOI: 10.1117/12.256369
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