George A Sefler

Title: George A. Sefler: Innovator in Multimode Planar Spectrographs

Introduction

George A. Sefler is a notable inventor based in Mount Kisco, NY (US). He has made significant contributions to the field of optical engineering, particularly in the development of multimode planar spectrographs. His innovative work has led to advancements in wavelength demultiplexing technologies.

Latest Patents

Sefler holds a patent for "Multimode planar spectrographs for wavelength demultiplexing and methods of fabrication." This patent describes a planar spectrograph designed for demultiplexing optical wavelength signals. The invention features a monolithic substrate with an etched diffraction grating that operates in conjunction with input light to diffract and reflect signals to a detector. Additionally, the substrate includes a recess to accommodate a separate slab waveguide, which is configured to guide input light to and from the diffraction grating. The patent also discusses silicon-on-insulator spectrographs and the fabrication processes for manufacturing these devices.

Career Highlights

George A. Sefler is associated with the International Business Machines Corporation (IBM), where he has contributed to various projects in optical technologies. His work at IBM has allowed him to collaborate with other talented professionals in the field.

Collaborations

Some of Sefler's notable coworkers include Mitchell S. Cohen and James L. Speidell. Their collaborative efforts have further advanced the research and development of optical systems.

Conclusion

George A. Sefler's contributions to the field of optical engineering, particularly through his patent on multimode planar spectrographs, highlight his innovative spirit and dedication to advancing technology. His work continues to influence the development of optical devices and systems.