Company Filing History:
Years Active: 1990-1993
Title: Michael C. Hughes: Innovator in Optical Technologies
Introduction
Michael C. Hughes is a notable inventor based in Lehigh, PA (US), recognized for his contributions to optical technologies. He holds 2 patents that showcase his innovative approaches in the field.
Latest Patents
One of his latest patents is for a Lithium niobate etchant. This invention involves selectively etching oxides of tantalum and niobium using patterned silicon oxide deposited by low-temperature chemical vapor deposition as a mask. A sulfate flux is utilized to selectively remove exposed portions of the tantalum or niobium oxide substrate. Another significant patent is the proton exchange method of forming waveguides in LiNbO.sub.3. This method discloses a process for creating optical waveguides within a lithium-based optical substrate by utilizing sulfuric acid as the proton source. The substrate is masked to expose areas intended for transformation into waveguiding regions and is immersed in a heated sulfuric acid bath. This process allows for the exchange between protons in the acid and lithium in the substrate, enhancing the extraordinary refractive index in the unmasked area for effective optical guiding.
Career Highlights
Michael C. Hughes is currently employed at AT&T Bell Laboratories, where he continues to work on innovative projects that push the boundaries of optical technology. His work has significantly contributed to advancements in the field.
Collaborations
Throughout his career, Hughes has collaborated with notable colleagues, including Jeffrey B. Bindell and James Thomas Cargo. Their combined expertise has fostered a productive environment for innovation.
Conclusion
Michael C. Hughes stands out as a prominent inventor in the realm of optical technologies, with a focus on enhancing waveguide formation and etching processes. His contributions continue to influence the field and inspire future innovations.