Third order inter-modulation distortion simulation for a semiconductor laser in the fiber optic micro-cellular system

Suaidi, M. K.; Yong, Lisa; Jabar, Sharhid

doi:10.1109/icon.2001.962371

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…This is very important as the IM3 occurs in the same band as the fundamental signal and contributes to the distortions which then deteriorate the quality of the system. Increasing the bias current beyond a certain point can reduce IM3 and improve the SFDR and thus the overall system performance (as confirmed by the simulation in [6]). …”

Section: Discussionsupporting

confidence: 60%

Effect of Laser Bias Current to the Third Order Intermodulation in the Radio over Fibre System

Yaakob¹,

Abdullah²,

Osman³

et al. 2006

2006 International RF and Microwave Conference

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Third order intermodulation (IM3) can cause non-linearity effects which result in interference and crosstalk between the subcarriers in radio over fibre (ROF) transmissions. This paper presents the experimental results of the effect of varying the magnitude of the laser bias current on the IM3 in an ROF system with direct modulation. We also investigate the behaviour of the system spurious free dynamic range (SFDR) with the bias current variation. The results show that there will be an optimum bias current range for a given range of the radio frequency (RF) input power in order to minimise the IM3 effect and obtain the best possible SFDR for the system.

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Section: Discussionsupporting

confidence: 60%