The phenomenon of “slow light” has received considerable attention over the last few years. The term slow light refers to the propagation of an optical signal through a medium with a speed considerably less than speed of light in vacuum. Controlling the speed of light is important for many applications such as optical communication systems, optical buffering, data synchronization, optical memories etc. Recent research has established that the velocity of light pulses can be controlled through micro-ring resonators (MRRs). This book is basically a research-based study on MRR systems and their utilization and application in optical communications. 

This small book of only nine chapters starts with the theory of the soliton generation and propagation, and gradually discusses the theory and analysis of MRRs, as well as the physics and fabrication of MRR systems; their application in optical communications; techniques of generating slow and fast pulses using MRRs and various semiconductor materials. The book also contains comprehensive details of feedback systems and their integration onto a single device using CMOS-compatible processes and materials. 

This book cannot be used as a textbook, but can be used as a reference for undergraduate and graduate researchers and for professional engineers with prior knowledge of applied optics and optical communication. While the book doesn’t describe any details about equations, figures and tables are depicted clearly, and all references are mentioned in the last chapter of this book.

Review by Ishtiaque Ahmed, Member OSA, IEEE, APS.

The opinions expressed in the book review section are those of the reviewer and do not necessarily reflect those of OPN or OSA.