Nicholas John Doran

Title: Innovations of Nicholas John Doran

Introduction

Nicholas John Doran is a notable inventor based in Stratford-on-Avon, GB. He has made significant contributions to the field of communications technology, holding a total of 3 patents. His work primarily focuses on methods and systems for deploying optical demodulator arrangements in communications networks.

Latest Patents

Doran's latest patents include a method and system for deploying an optical demodulator arrangement in a communications network. This patent describes methods for deploying an optical demodulator arrangement that includes at least one interferometer in a network transmitting optical signals. The optical signal may consist of on-off-keyed signals and DMPSK signals, with the DMPSK signal potentially being a DQPSK signal. The network may feature fiber spans carrying these signals, and the interferometer is designed with a first and second optical path, creating a time delay between them. The method also involves determining a cross-talk penalty resulting from cross-phase modulation between channels and establishing a time delay value for the interferometer based on this penalty.

Another significant patent by Doran addresses signal transmission in an optical system. This method aims to reduce Raman tilt in a transmission apparatus that transmits multiple signals occupying contiguous channels through optical transmission cable. The approach includes transmitting half the maximum number of signals at twice the normal channel frequency spacing at a higher-than-normal level, while also transmitting signals in selected channels at normal power levels. As new channels are added, the powers of neighboring channels are adjusted to maintain normal levels.

Career Highlights

Throughout his career, Nicholas John Doran has worked with prominent companies such as Ericsson AB and Oclaro Technology Limited. His experience in these organizations has contributed to his expertise in optical communications and signal processing.

Collaborations

Doran has collaborated with notable professionals in his field, including Steven Alleston and Brian Garrett. These collaborations have likely enriched his work and led to innovative advancements in communications technology.

Conclusion

Nicholas John Doran's contributions to the field of communications through his patents and collaborations highlight his role as a significant inventor. His innovative methods for optical signal transmission and demodulation continue to influence the industry.