Radio frequency signal generation and wireless transmission using PANDA and add/drop systems

Abstract

The radio frequency (RF) signal generation and its modulation is the basic building block of wireless communication system. High frequency RF signals are desired in high speed systems but traditional methods to generate high frequency RF signals suffered from electronic devices data processing rate. On the other hand, spectral efficient modulation is also played vital rule in the high speed wireless communication where orthogonal frequency-division multiplexing (OFDM) transmission is mostly preferred. Due to the challenges regarding to electronic devices, optically generation and processing of RF OFDM signals has gained considerable attention. In this work microring resonator (MRR) system is used to implement all optically generation and modulation of RF OFDM signal. The MRRs can be used as filter devices where generation of high frequency (GHz) soliton signals as single and multi-carrier can be performed using suitable system parameters. The results show the generation of 64 multi-carriers evenly spaced in the range from 54.09 GHz to 55.01 GHz to generate OFDM signal all optically, where the RF modulation was achieved by two optical carriers with free spectral range (FSR) = by 5 GHz.