Design of Ultrafast All-Optical Pseudo Binary Random Sequence Generator, 4-bit Multiplier and Divider using 2 x 2 Silicon Micro-ring Resonators

TL;DR

This paper presents the design and analysis of ultrafast all-optical pseudo-random binary sequence generators, multipliers, and dividers using silicon microring resonators, achieving high-speed operation at 45 Gbps.

Contribution

It introduces the first designs of all-optical 4 x 4-bit multiplier and divider using silicon microring resonators, with detailed theoretical analysis and optimization for ultrafast, low-power performance.

Findings

Achieved logic operations at 45 Gbps.

Designed compact and low-power all-optical components.

Provided detailed theoretical analysis incorporating two-photon absorption and thermo-optic effects.

Abstract

All-optical devices are essential for next generation ultrafast, ultralow-power and ultrahigh bandwidth information processing systems. Silicon microring resonators (SiMRR) provide a versatile platform for all-optical switching and CMOS-compatible computing, with added advantages of high Q-factor, tunability, compactness, cascadability and scalability. A detailed theoretical analysis of ultrafast all-optical switching 2 x 2 SiMRRs has been carried out incorporating the effects of two photon absorption induced free-carrier injection and thermo optic effect. The results have been used to design simple and compact all-optical 3-bit and 4-bit pseudo-random binary sequence generators and the first reported designs of all-optical 4 x 4-bit multiplier and divider. The designs have been optimized for low-power, ultrafast operation with high modulation depth, enabling logic operations at 45 Gbps.