Company Filing History:
2 out of 3,345 
2 out of 2,714 
1 out of 4,208 
Years Active: 1982-2000
Title: The Innovations of Arthur C. Hart
Introduction
Arthur C. Hart is a notable inventor based in Chester, NJ (US), recognized for his contributions to the field of optical fibers. With a total of 7 patents, Hart has made significant advancements that have impacted optical communication systems.
Latest Patents
One of Hart's latest patents is the "Biconic coating die for making coated optical fibers." This invention describes a method and apparatus for high-velocity dual coating of optical fibers. The process involves passing the fiber through an entrance die into a coating reservoir, where liquid coating material is supplied under pressure. The design ensures that air does not enter the reservoir, allowing for a smooth coating process. The coated fiber then goes through a centering and sizing die, which controls the recirculation of excess coating material to produce centering forces on the fiber at high velocities. The final step involves passing the fiber through a second coating reservoir into an exit die, where the second coating is sized and cured.
Another significant patent is the "Article comprising optical fiber having low polarization mode." This invention addresses the issue of birefringence in single-mode optical fibers, which can limit their effectiveness in high bit rate or analog optical communication systems. Hart discovered that applying torque to the fiber during the drawing process can substantially reduce polarization mode dispersion (PMD). The technique involves impressing a 'spin' on the fiber, alternating between clockwise and counterclockwise helicity.
Career Highlights
Throughout his career, Arthur C. Hart has worked with prestigious organizations such as AT&T Bell Laboratories and Bell Telephone Laboratories. His work in these institutions has contributed to the development of innovative technologies in the telecommunications sector.
Collaborations
Hart has collaborated with notable individuals in his field, including Richard G. Huff and Kenneth L. Walker. Their combined expertise has likely fostered advancements in optical fiber technology.
Conclusion
Arthur C. Hart's contributions to optical fiber technology through his patents and collaborations have significantly advanced the field. His innovative approaches continue to influence the development of high-performance optical communication systems.