Integrated photonic ring resonator for application in optoelectronic oscillator

Abstract

As most of the improvements in silicon photonics, high quality factor Micro Ring Resonators are widely used in the integrated microwave photonic systems. Silicon photonics is advanced technology for the photonic integrated circuits (PIC) which has many applications in various fields. Now silicon-on-insulator (SOI) is mostly used platform for silicon photonics because of various optical and material characteristics of crystalline silicon. Silicon di Oxide(SiO2) is used as the integration platform to realize the OEO. Optoelectronic Oscillators are designed to produce high quality spectrally pure RF signal and mm wave signals by introducing a high-quality factor Ring Resonator of 3120 after the Optical Modulator which is realized as a bandpass microwave photonic filter with a 3 dB bandwidth of 100MHz. The optoelectronic oscillator(OEO) can be tunable because it is based on microwave photonic filter which is tunable. While the frequency tuning of OEO the measured side mode suppression ratio(SMSR) is 45dB. The calculated stop band rejection ratio(SRR) is 30dB. The optoelectronic oscillators are used in satellite communication links, wideband tunable frequency generation, aerospace engineering, navigation systems and wireless communication.