This inventor holds 3 USPTO granted patents. Top assignee: Harmonic Lightwaves, Inc.. Active years: 1995-1998.
Company Filing History:
Years Active: 1995-1998
Title: The Innovations of Charles H. Gall
Introduction
Charles H. Gall is a notable inventor based in Newark, CA, who has made significant contributions to the field of optical communication. With a total of 3 patents to his name, Gall's work focuses on enhancing the efficiency and performance of light wave communication systems.
Latest Patents
One of Gall's latest patents is titled "Multi-tone phase modulation for light wave communication system." This invention describes an optical transmission system capable of launching at least 17 dBm of optical power at a 1550 nm wavelength into a 50 km long span of standard telecommunications single-mode optical fiber. The system effectively mitigates issues related to stimulated Brillouin scattering, damage to optical phase modulators, and signal degradation. By employing high-frequency modulation of the laser drive current alongside lower frequency modulation of the laser output light, Gall's innovation raises the SBS threshold, ensuring reliable performance under continuous wave operation.
Another significant patent is the "Control circuit and method for direct current controlled attenuator." This invention features a bridge T attenuator that utilizes PIN diodes in both the bridge and shunt arms. The current through the shunt arm is controlled in relation to the current through the bridge arm, maintaining a constant product of these currents through a feedback loop. This analog solution provides a simple and cost-effective means for achieving a prescribed level of attenuation while keeping impedance fixed across the entire attenuation range.
Career Highlights
Charles H. Gall is currently associated with Harmonic Lightwaves, Inc., where he continues to innovate in the field of optical technologies. His work has been instrumental in advancing communication systems that are both efficient and reliable.
Collaborations
Gall has collaborated with notable colleagues such as Chien-Yu Kuo and Moshe Nazarathy, contributing to the development of cutting-edge technologies in optical communication.
Conclusion
Charles H. Gall's contributions to optical communication through his innovative patents demonstrate his commitment to advancing technology in this field. His work continues to influence the development of efficient communication systems.