Company Filing History:
Years Active: 1984
Title: The Innovations of William J Duncan
Introduction
William J Duncan is a notable inventor based in Ipswich, GB. He has made significant contributions to the field of optical technology, particularly in the development of graded index optical fibres. His work has implications for telecommunications and various optical applications.
Latest Patents
Duncan holds a patent for his invention related to graded index optical fibres. This patent describes a range of alkali metal borosilicate glass compositions that are modified by the addition of alkaline earth metal oxides. These compositions are especially suitable for producing graded index optical fibre using the double crucible method. The core glass can be paired with a suitable cladding glass, which may either be another glass from the same range or an unmodified alkali metal borosilicate. This innovative approach allows for thermal diffusion in the nozzle of the double crucible, resulting in a composition gradient of alkaline earth metal oxide and a corresponding refractive index gradient. The fibres produced exhibit improved refractive index profiles, particularly when the proportions of the oxides in the core and cladding glasses are optimized to avoid a simple ion-exchange mechanism. Notably, fibres with numerical apertures of up to 0.268 and loss values as low as 5.0 dB/km have been successfully prepared.
Career Highlights
Duncan is associated with the British Telecommunications Corporation, where he has applied his expertise in optical technologies. His work has contributed to advancements in telecommunications infrastructure and optical fibre technology.
Collaborations
Duncan has collaborated with notable colleagues, including Keith J Beales and Anthony G Dunn. Their combined efforts have furthered research and development in the field of optical fibres.
Conclusion
William J Duncan's innovative work in graded index optical fibres has made a significant impact on the telecommunications industry. His contributions continue to influence advancements in optical technology and its applications.