Location History:
- North Plainfield, NJ (US) (1996 - 1998)
- Alpharetta, GA (US) (1998 - 2002)
Company Filing History:
Years Active: 1996-2002
Title: Chellappan Narayanan: Innovator in Optical Devices
Introduction
Chellappan Narayanan is a notable inventor based in Alpharetta, GA (US). He holds a total of 8 patents that showcase his contributions to the field of optical devices and integrated circuits. His innovative work has significantly impacted the technology landscape.
Latest Patents
One of his latest patents is titled "Optical device having modified transmission characteristics by localized thermal treatment." This invention modifies the transmission characteristics of an optical device, which is fabricated from multiple layers of silica-based glass on a silicon substrate, through localized thermal treatment. The use of a carbon-dioxide (CO2) laser selectively softens the core and/or cladding material of a waveguide structure during or after the fabrication process. This technique relieves strain between the waveguide structure and the silicon substrate, reducing or eliminating birefringence. Additionally, the CO2 laser can modify the index of refraction, changing the speed of light through the waveguide and affecting the phase shift associated with it. Another application involves increasing the transmission loss of the waveguide. Overall, this heat treatment method is faster and less expensive than existing techniques for modifying optical device transmission characteristics.
Another significant patent is the "Method of preparing end faces on integrated circuits." This method utilizes a beveled cutting blade to impart a desired contact angle to the operative end faces of integrated circuit chips or dies. The process includes mounting feet on the chip, trimming them as necessary, and cutting the end faces before removing the chip from the fixture.
Career Highlights
Chellappan Narayanan has worked with prominent companies such as Lucent Technologies Inc. and Agere Systems. His experience in these organizations has allowed him to develop and refine his innovative ideas in optical technology.
Collaborations
Throughout his career, Narayanan has collaborated with notable individuals, including Herman M. Presby and Scott Thomas Davies. These collaborations have contributed to the advancement of his inventions and the development of new technologies.
Conclusion
Chellappan Narayanan is a distinguished inventor whose work in optical devices and integrated circuits has made a significant impact on technology. His innovative patents and career achievements reflect his dedication to advancing the field.