Suppression of Nonlinear Distortions in Radio-over-fiber System

In this research project initially, we have proposed to use fiber dispersion compensation method to improve the optics configuration system, the scheme shows that the maximum number of bits for RZ and NRZ formats, can be transmitted over a long-haul transmission link. For the second proposed method, we involve the deployment of GaAs dual electrode Mach-Zehnder Modulators (DE-MZM) for the mixing of RF signal with an optical wavelength. This model represents a multi-octave and multi-carrier linearized link, which is capable of transmitting multiple RF signals with highly suppressed IMDs and Harmonic distortions. We have also worked on the design of a novel photonic mixer for the elimination of the intermodulation distortions and it would also be able to downconvert and upconvert the multiple RF signals linearly. The use of all these proposed modulation techniques will suppress the intermodulation distortion (IMD) and enhance the key performance indicator of the RF over fiber which is Spurious-free dynamic range (SFDR). The above techniques contribute in making the photonics transceivers linear and highly efficient. Essentially, this research project will have a great impact on future generations of RF over fiber transmission systems and wireless systems including 5G and beyond.

The above techniques contribute in making the photonics transceivers linear and highly efficient. Essentially, this research project will have a great impact on future generations of RF over fiber transmission systems and wireless systems including 5G and beyond.

Microwave Photonics, Fibre Optics Communications, Intermodulation distortion (IMD), Spurious-free dynamic range (SFDR).