Location History:
- Ste-Foy, CA (2005)
- Sainte-Foy, CA (1993 - 2006)
Company Filing History:
Years Active: 1993-2006
Title: The Innovations of Richard L Lachance
Introduction
Richard L Lachance is a notable inventor based in Sainte-Foy, Canada. He holds a total of seven patents, showcasing his contributions to the field of optical technology. His work primarily focuses on methods for aligning and calibrating optical filters, as well as developing tunable dispersion compensators.
Latest Patents
One of his latest patents is titled "Methods for the alignment and calibration of the spectral responses of optical filters." This innovative method allows for the alignment of two comb-like optical filters without the need for spectrally-resolved equipment. Instead, it utilizes the optical power correlation profile of a broadband light signal that represents the combined spectral responses of the filters. The power correlation profile can be compared to a pre-stored profile, facilitating a tuning method for aligning the filters. In this process, the filters are first relaxed to an unstretched position, followed by stretching and aligning them with each other at a calibrated value.
Another significant patent is the "Tunable chromatic dispersion compensator." This device compensates for the chromatic dispersion experienced by single-channel or multi-channel light signals. It includes various optical structures, such as chirped Bragg gratings, each with a unique dispersion profile. The light signal propagates through these structures, accumulating the dispersion compensation effect. A tuning device applies a uniform tuning force, preferably a temperature gradient, to adjust the dispersion profile of each optical structure.
Career Highlights
Richard has worked with prominent organizations, including Teraxion Inc. and Université Laval. His experience in these institutions has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Richard has collaborated with notable colleagues, including Michel Morin and Sylviane Lelievre. These partnerships have likely enhanced his research and development efforts in the field.
Conclusion
Richard L Lachance's contributions to optical technology through his patents and collaborations highlight his innovative spirit and dedication to advancing the field. His work continues to influence the development of optical systems and technologies.