Manfred Plihal

Title: Manfred Plihal: Innovator in Optical Communications

Introduction

Manfred Plihal is a notable inventor based in Munich, Germany. He has made significant contributions to the field of optical communications, holding three patents that showcase his innovative spirit and technical expertise.

Latest Patents

One of his latest patents is the "Monolithically integrated waveguide-photodiode combination." This invention involves a carrier substrate made of n-conductive semiconductor material, featuring a strip-shaped n-conductive absorption layer and a waveguide formed on it. The design allows for the diffusion of p-doping into the waveguide, resulting in the formation of a photodiode. The positive electrode contact is applied over the p-conductive region, while the negative electrode contact is placed on the free side of the carrier substrate. The waveguide is protected by a cover layer along its top surface.

Another significant patent is the "Monolithically integrated WDM demultiplex module and method." This module features a film waveguide made of InGaAsP on a substrate, with an InGaAs photodiode applied to the waveguide. The photodiode is optically coupled to the waveguide through leakage coupling, and a wavelength selection element in the form of a grating is integrated into the waveguide's surface. This module can be manufactured in a single epitaxial step, enhancing its efficiency and performance.

Career Highlights

Manfred Plihal is currently associated with Siemens Aktiengesellschaft, where he continues to push the boundaries of technology in optical communications. His work has been instrumental in developing advanced systems that improve communication efficiency and reliability.

Collaborations

Throughout his career, Plihal has collaborated with esteemed colleagues, including Heinrich Schlotterer and Reiner Trommer. These partnerships have fostered innovation and contributed to the success of his projects.

Conclusion

Manfred Plihal's contributions to optical communications through his patents and work at Siemens Aktiengesellschaft highlight his role as a leading inventor in the field. His innovative designs and collaborative efforts continue to shape the future of technology in this area.