In this book, recent application of micro ring resonators reported. This book have a review on many works of scientists which focus on micro ring resonators. Here we will using micro ring resonates as a setup of proposed system and we will generate required pulse using optical soliton and Gaussian pulse as input pulse. Here,by analysis of results which are generally applicable to a broad class of many applications such as fast and slow light devices. We observe an unexpected result by micro ring resonators at the output.