Enhanced NRZ multi-carriers modulation technologies for microresonators in THz technology applications

Abstract

Abstract Multi-optical carriers suitable for use in an optical communication system have been generated via integrated microring resonators. These carriers were sufficiently stable for travel in either a free space channel or waveguides while experiencing very low dispersion. Multiple carriers were created using the integrated microring resonators, with each carrier possessing a frequency at 193.012, 193.086, 193.186 and 193.268 terahertz (THz). The second part which is the non-return-to-zero (NRZ) modulation has been performed using the microring resonator modulators. The objective of the research is to generate multi-carriers at infrared region and modulate them for the optical communication application using the microring resonators. At the transmitter part, series of microring resonators have been used to generate four different THz frequencies which can be either de-multiplexed and modulated individually using the NRZ modulation format or modulated without de-multiplexing them as these enter a series of microring resonator modulators and microring resonator drop filters. As results, the detection of the four NRZ modulated frequencies has been performed successfully with high signal qualities. Therefore, in this research microring resonators are used for different purposes as to generate optical signals (at the transmitter part), modulate and filter them along an optical transmission link.