This inventor holds 13 USPTO granted patents and 1 published patent application. Top assignees: Corning Cable Systems, Corning Optical Communications LLC, Siecor Corporation. Active years: 1984-2020.
Location History:
- Maiden, NC (US) (2019)
- Hickory, NC (US) (1984 - 2020)
Company Filing History:
5 out of 824 
4 out of 778 
3 out of 214 
Years Active: 1984-2020
Title: John Douglas Coleman: Innovator in Optical Transmission Systems
Introduction
John Douglas Coleman is a prominent inventor based in Hickory, NC (US), known for his significant contributions to the field of optical transmission systems. With a total of 13 patents to his name, Coleman has made remarkable advancements in multimode optical fiber technology.
Latest Patents
One of his latest patents is for a multimode optical transmission system employing modal-conditioning fiber. This innovative system utilizes an optical fiber with at least one modal-conditioning fiber. It includes a single-mode transmitter that generates modulated light with wavelengths ranging from 800 nm to 1600 nm. The system is designed with an optical receiver that detects the modulated light, and a multimode optical fiber that defines the optical path between the transmitter and receiver. The multimode optical fiber features a core with a specific diameter and a refractive index profile optimized for transmitting light at a nominal wavelength of 850 nm. Additionally, the system incorporates at least one modal-conditioning fiber to perform modal filtering and modal converting of the optical modulated light.
Career Highlights
Throughout his career, John Douglas Coleman has worked with notable companies such as Corning Cable Systems and Corning Optical Communications LLC. His experience in these organizations has allowed him to develop and refine his expertise in optical technologies.
Collaborations
Coleman has collaborated with esteemed colleagues, including Xin Chen and Ming-Jun Li