Cheng-Yi Ou

Title: Innovations of Cheng-Yi Ou in Laser Technology

Introduction

Cheng-Yi Ou is a notable inventor based in Miaoli County, Taiwan. He has made significant contributions to the field of laser technology, holding two patents that showcase his innovative approach to edge emitting laser devices and vertical cavity surface emitting laser devices.

Latest Patents

One of his latest patents is for an edge emitting laser device. This device includes a substrate, an n-type buffer layer, a first n-type cladding layer, a grating layer, a spacer layer, a lower confinement unit, an active layer, an upper confinement unit, a p-type cladding layer, a tunnel junction layer, and a second n-type cladding layer, all arranged sequentially from bottom to top. The tunnel junction layer plays a crucial role in stopping the etching process, allowing for the formation of a predetermined ridge structure. This innovation reduces the series resistance of the EEL device, effectively utilizing the lower half of the active layer and improving optical field/grating coupling efficiency.

Another significant patent by Cheng-Yi Ou is for a vertical cavity surface emitting laser (VCSEL) device. This device consists of a substrate, a first mirror layer, a tunnel junction layer, a second mirror layer, an active layer, an oxide layer, and a third mirror layer, all stacked together. The first and third mirror layers are N-type distributed Bragg reflectors, while the second mirror layer is a P-type distributed Bragg reflector. The tunnel junction layer is designed to convert part of the P-DBR into N-DBR, thereby reducing the series resistance of the VCSEL device. This patent also includes a manufacturing method that features in-situ and one-time epitaxy, minimizing the risk of process variation.

Career Highlights

Cheng-Yi Ou is currently employed at Abocom Systems, Inc., where he continues to develop innovative technologies in the field of lasers. His work has significantly advanced the understanding and application of laser devices in various industries.

Collaborations

Cheng-Yi Ou has collaborated with notable coworkers, including Chih-yuan Lin and Cheng-hsiao Chi, contributing to the advancement of laser technology through teamwork and shared expertise.

Conclusion

Cheng-Yi Ou's contributions to laser technology through his patents reflect his innovative spirit and dedication to advancing the field. His work at Abocom