Further Theoretical Investigations for Laser Relative Intensity Noise with Fiber Nonlinearities and Higher-Order Dispersion

Author: R. S. KALER

Source: Fiber And Integrated Optics, Volume 23, Number 6, November/December 2004 , pp. 479-489(11)

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Abstract:

In this article, we theoretically investigate relative intensity noise (RIN) in optical communication systems with fiber nonlinearities due to optical Kerr effects and higher-order dispersion. The impact of modulation frequencies, launch power, and laser bias current on RIN has been illustrated. We show that RIN increases with modulating frequencies up to the resonance frequency, launch power, and decrease in the laser bias current. We also show that higher-order dispersion terms have no impact on the RIN, but with first-order dispersion compensation the higher-order dispersion terms have significant impact at high modulating frequencies. The RIN with and without fiber nonlinearities is further investigated. It has been shown that the RIN with fiber nonlinearity is more than the RIN without nonlinearity and the effect of nonlinearity appears at higher modulation frequencies only.

Keywords: dispersion; fiber nonlinearity; relative intensity noise; higher-order dispersion

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01468030490510324

Affiliations: 1: Professor and Head, Department of Electronics & Communication Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab, India

Publication date: 2004-11-01

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