Yang Ren

Title: Innovations by Yang Ren: Pioneering Optical Filter Technology and SQL Execution Plans

Introduction

Yang Ren is an accomplished inventor based in Edmonton, Canada. He has made significant contributions to the fields of optical filtering and database management systems. With a total of 2 patents, Yang Ren continues to push the boundaries of technology through his innovative designs and methods.

Latest Patents

Yang Ren's latest patents include a "Variable bandwidth microring optical filter device and method with frequency tuning." This invention discloses methods and devices that provide a variable-bandwidth optical filter with frequency tuning. The architecture is based on microring resonators that can vary both the operational wavelength and bandwidth without adding complexity compared to conventional wavelength tunable filters. The design allows for a universal filter that can accommodate any arbitrary shape of filter response, such as second-order, fourth-order, and sixth-order. The filter characteristics, including insertion loss, in-band ripple, and out-of-band rejection level, are maintained over the bandwidth tuning range. Notably, there is no need for extra heaters to tune the filter's operating bandwidth, as the same heaters used for frequency tuning can also adjust the bandwidth. This device can function as an add/drop filter.

Another significant patent is the "Method and apparatus for determining SQL execution plan." This invention optimizes the determination of a structured query language (SQL) execution plan, enhancing the execution efficiency of the SQL execution plan. The method involves obtaining a first iteration parameter generated after executing a first plan tree on at least one relation table. A second plan tree is established based on this parameter, and the first or second plan tree is determined as the SQL execution plan when the difference between them does not exceed a specified threshold.

Career Highlights

Yang Ren is currently employed at Huawei Technologies Co., Limited, where he applies his expertise in developing cutting-edge technologies. His work has garnered attention for its innovative approach and practical applications in various industries.

Collaborations

Yang has collaborated with notable colleagues, including Vien Van and Zhiping Jiang, contributing to a dynamic work environment that fosters creativity and innovation.

Conclusion

Yang Ren's contributions to optical filter technology and SQL execution plans exemplify his commitment to innovation. His patents reflect a deep understanding of complex systems and a drive to improve efficiency in technology.