Peter D Roorda

Title: Innovations of Peter D Roorda

Introduction

Peter D Roorda is a notable inventor based in Hertford, GB. He has made significant contributions to the field of optical networks, holding a total of 4 patents. His work focuses on enhancing the efficiency and functionality of optical communication systems.

Latest Patents

One of Roorda's latest patents is the Integrated Photonic Switch. This innovative device is designed for use in all-optical networks. It separates incoming multiplexed signals from various input fiber ports into their component wavelengths. Individual wavelengths are then switched within the switch fabric towards the desired output. The wavelengths are subsequently multiplexed into WDM signals directed to the appropriate output ports. The multiplexer and demultiplexer are diffraction grating devices integrated with the switch fabric. The switch fabric includes two matrices of 3-D MEMS mirrors arranged in the same plane or in two parallel planes. The optical path between the input ports, the demultiplexer, and the input matrix is pre-set so that each wavelength is incident on a specific mirror. The geometry of the output matrix, the multiplexer, and the output ports uniquely determines the wavelengths on a certain port. However, the position of the mirrors can be adjusted with a control system, allowing the path of a wavelength within the switch fabric to be flexible. This means that a wavelength input on one port can be directed to any output port.

Another significant patent is the Constrained Optical Mesh Protection for Transmission Systems. This invention aims to improve protection bandwidth efficiency for rapid recovery from faults in optical networks. It features a protection ring that shares some protection paths with a pre-configured route overlapping on a specific link with other protection paths or rings. A selector for the given link determines which of the overlapping secondary paths is allocated at any time. This dual sharing of protection paths enhances the efficient use of protection bandwidth. The link selector can be controlled locally, allowing for quicker operation. This local control operates independently of the switches used to establish the secondary path through the network, making it easier to scale to larger and more complex networks than shared rings alone.

Career Highlights

Peter D Roorda is currently employed at Nortel Networks Corporation, where he continues to innovate in the field of optical technology. His work has significantly impacted the development of more efficient optical communication systems.

Collaborations

Throughout his career, Roorda has collaborated with notable colleagues