Location History:
- Orpington, GB (1993 - 1995)
- Kent, GB (1995)
- London, GB (1995)
Company Filing History:
Years Active: 1993-1995
Title: Ian J Hirst: Innovator in Optical Transmission Systems
Introduction
Ian J Hirst is a notable inventor based in Orpington, GB. He has made significant contributions to the field of optical transmission systems, holding a total of 4 patents. His work focuses on improving the efficiency and performance of optical communication technologies.
Latest Patents
Hirst's latest patents include innovative methods for enhancing the signal to noise ratio in optical transmission systems. One of his patents describes an optical transmission system that comprises a concatenated chain of amplifiers along a fiber transmission path. In this system, the signal to noise ratio is measured at each amplifier by selectively notch filtering a transmitted signal and measuring the power of both the filtered and unfiltered signals within the notch bandwidth. A supervisory system is employed to control the gain of each amplifier, maximizing the aggregate signal to noise ratio of the system. Another patent outlines an optical transmission system featuring amplified forward and return paths between a local station and a remote station. Each amplifier in the forward path has an attenuated loopback coupling its output to the return path. Frequency modulated supervisory signals generated at the local station are returned via the loopbacks, allowing for performance analysis of each amplifier, and the system can also be utilized for locating fiber breaks.
Career Highlights
Throughout his career, Ian J Hirst has worked with prominent companies such as Northern Telecom Limited and Northern Telecom Europe Limited. His experience in these organizations has contributed to his expertise in optical transmission technologies.
Collaborations
Hirst has collaborated with notable individuals in his field, including Anthony Jessop and Thomas Oswald. These partnerships have likely enriched his work and led to further advancements in optical communication systems.
Conclusion
Ian J Hirst is a distinguished inventor whose work in optical transmission systems has led to significant advancements in the field. His innovative patents and collaborations reflect his commitment to enhancing communication technologies.