Gareeyasee Saha

Title: Gareeyasee Saha and Low-Loss Silicon Ring Modulators

Introduction

Gareeyasee Saha is an inventor based in San Jose, California, and is associated with Xilinx, Inc. His patent work addresses silicon photonics, with a focus on compact ring modulators for dense-wavelength-division-multiplexing systems.

Latest Patents

Saha is named on 1 patent: “Ring modulators with low-loss and large free spectral range (FSR) on a silicon-on-insulator (SOI) platform.” The invention describes a silicon-on-insulator device using micro-ring modulators with radii under five micrometers. A 16-channel embodiment may provide a 3.2 THz free spectral range, 200 GHz channel spacing, 41 GHz bandwidth, and a Q factor of 4,500.

The patent also describes design features intended to improve modulation efficiency and manage electrical and optical performance. These include alternative PN-junction orientations, on-chip inductive components for reactance matching, and waveguide and slab geometries tailored to the modulators. Doping patterns, optical coupling gaps, and cavities beneath the modulators and heater elements are also part of the disclosed designs.

Career Highlights

The available information connects Saha’s patent activity with Xilinx, Inc. and identifies his work in silicon photonic devices. The patent’s proposed combination of small ring modulators and carefully engineered waveguide structures is aimed at supporting dense, high-speed optical communication.

Collaborations

Chuan Xie and Mayank Raj are identified as Saha’s coworkers. The available details do not specify their roles in the patent or the extent of their collaboration.

Conclusion

Gareeyasee Saha’s patent describes a compact SOI ring-modulator approach that combines optical and electrical design features to support dense wavelength-division multiplexing.