Theoretical Consideration of Nonlinear Compensation Method for Minimizing High-Order Intermodulation Distortion Nonlinear Compensation in a Direct Optical FM RoF System

Katsutoshi TSUKAMOTO

IEICE TRANSACTIONS on Electronics   Vol.E86-C    No.7    pp.1167-1174
Publication Date: 2003/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress in Microwave and Millimeter-wave Photonics Technologies)
Category: Photonic Links for Wireless Communications
radio-on-fiber (RoF),  optical FM,  optical frequency discriminator (OFD),  intermodulation distortion,  

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An optical FM system using an optical FM LD (laser diode) and an optical frequency discriminator (OFD), in which a nonlinear compensation scheme based on the interaction between its nonlinearities can minimize intermodulation distortion. This paper theoretically investigates the minimization influence for 3rd plus 5th order intermodulation distortion power for an optical FM radio-on-fiber system. The carrier to noise-plus-distortion power ratio (CNDR) is theoretically analyzed in employing the OFD whose transmission characteristic is controlled by a phase shifter. The results show that the designed receiver can achieve higher CNDR in the application of multicarrier transmission.