Sunnyvale, CA, United States of America

David Jisen Xu

This inventor holds 2 USPTO granted patents. Top assignees: Ditech Corporation, The Whitaker Corporation. Active years: 1998-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David Jisen Xu. Retrieved from https://idiyas.com/inventor/david-jisen-xu

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 9(Granted Patents)


Company Filing History:


Years Active: 1998-2002

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2 patents (USPTO):Explore Patents

Title: David Jisen Xu: Innovator in Optical Communication Technologies

Introduction

David Jisen Xu is a notable inventor based in Sunnyvale, CA, who has made significant contributions to the field of optical communication. With a total of 2 patents, his work focuses on enhancing the efficiency and functionality of optical networks.

Latest Patents

One of Xu's latest patents is a Multi-port optical multiplexer element. This invention features a four-port Wavelength-Division-Multiplexing (WDM) element that can be utilized for various applications in optical communication networks, particularly in bi-directional fiber optic lines. In one embodiment, a single four-port WDM element is paired with an optical amplifier to facilitate bi-directional propagation on the same fiber. Another embodiment incorporates optical attenuators to achieve gain equalization of channels, allowing for the flexibility to add or remove channels. Additionally, input and output ports can be integrated into current-art elements, enabling bi-directional operation with equipment that lacks such capabilities.

Another significant patent by Xu is a fiber optic coupler package featuring a cover that overlaps the base. This optical fiber coupler package consists of a base member with a longitudinal groove and a cover member that is shorter in length than the base member. The cover is designed to completely overlap the groove when positioned over the base member.

Career Highlights

Throughout his career, David Jisen Xu has worked with several prominent companies, including Ditech Corporation and The Whitaker Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Xu has collaborated with notable colleagues such as Sami T Hendow and Sanjay Sudeora, further enhancing his contributions to the field of optical communication.

Conclusion

David Jisen Xu's innovative work in optical communication technologies, particularly through his patents, showcases his commitment to advancing the industry. His contributions continue to influence the development of efficient optical networks.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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