This inventor holds 3 USPTO granted patents. Top assignee: Bell Communications Research, Inc.. Active years: 1991-1993.
Company Filing History:
Years Active: 1991-1993
Title: The Innovations of David A. Smith
Introduction
David A. Smith is a notable inventor based in Freehold, NJ (US). He has made significant contributions to the field of acousto-optics, holding a total of 3 patents. His work focuses on advanced optical technologies that enhance the performance of optical systems.
Latest Patents
One of his latest patents is the "Polarization Converter with Apodized Acoustic Waveguide." This invention features an apodized acousto-optic polarization converter that utilizes two acoustic waveguides formed in a substrate. These waveguides act as a directional coupler, allowing acoustic power to be transferred back and forth. The design includes an interdigitated transducer that launches a surface acoustic wave, and an optical waveguide is formed in the middle of the second waveguide. An acoustic absorber is strategically placed to optimize the transfer of acoustic waves, resulting in reduced side lobes in the frequency spectrum of the converted signal. This converter can serve as an electrically tunable optical filter.
Another significant patent is the "Adiabatic Polarization Splitter." This invention comprises a 2x2 polarization beam splitter that includes two parallel waveguides and two crossing waveguides arranged in an X-configuration. The design employs four adiabatic junctions that facilitate the transfer of only one of the two orthogonal polarization modes, minimizing cross-talk at the junctions.
Career Highlights
David A. Smith is currently employed at Bell Communications Research, Inc., where he continues to innovate in the field of optical technologies. His work has been instrumental in advancing the capabilities of optical systems, particularly in telecommunications.
Collaborations
Throughout his career, David has collaborated with talented individuals such as Kwok-Wai Cheung and Brian Lee Heffner. These collaborations have contributed to the successful development of his patented technologies.
Conclusion
David A. Smith's contributions to acousto-optics and his innovative patents demonstrate his commitment to advancing optical technology. His work continues to influence the field and pave the way for future innovations.