Graham R Allan

Title: Innovations by Graham R Allan in Optical Communication Systems

Introduction

Graham R Allan is a notable inventor based in Columbia, MD (US). He has made significant contributions to the field of optical communication systems, particularly in the area of wavelength division multiplexing (WDM) networks. With a total of 3 patents to his name, Allan's work has advanced the performance and efficiency of optical networks.

Latest Patents

One of Allan's latest patents focuses on the "Reduction of ASE in WDM optical ring networks." This invention provides a wavelength division multiplexed optical communication system that includes an optical fiber ring designed to carry multiple optical channels at different wavelengths. The system incorporates optical amplifiers positioned along the fiber ring to amplify the WDM communication signal. Each amplifier generates amplified spontaneous emission (ASE), which can negatively impact network performance. Allan's invention introduces an optical feedback selector that feeds back the ASE to the amplifier input, effectively reducing its presence in the optical fiber ring. This innovative approach allows for the creation of closed-ring amplified WDM metropolitan networks without the need to disrupt the ring, thereby preventing uncontrolled ASE build-up.

Another aspect of his patent also addresses the reduction of ASE in WDM optical ring networks. It enhances the performance of optical networks by increasing the available gain of optical amplifiers. The system allows an optical wavelength to be injected into the fiber ring at a specific location, ensuring that it passes through multiple amplifiers before being dropped at a designated point. This method optimizes the use of optical amplifiers and improves overall network efficiency.

Career Highlights

Graham R Allan is currently associated with Seneca Networks, Inc., where he continues to innovate in the field of optical communications. His work has been instrumental in developing technologies that enhance the capabilities of optical networks.

Collaborations

Allan has collaborated with notable colleagues such as Gary Lynn Duerksen and Patrick Foy, contributing to advancements in optical communication technologies.

Conclusion

Graham R Allan's contributions to optical communication systems, particularly through his patents on reducing ASE in WDM networks, have significantly impacted the field. His innovative approaches continue to shape the future of optical networking technologies.