Company Filing History:
Years Active: 2004
Title: Changchun Li: Innovator in Optical Signal Transmission
Introduction
Changchun Li is a prominent inventor based in Shenzhen, China. He has made significant contributions to the field of optical signal transmission, holding a total of 2 patents. His work focuses on enhancing the efficiency and performance of dense wavelength division multiplexing (DWDM) systems.
Latest Patents
Changchun Li's latest patents include a method for implementing power equalization in DWDM systems. This invention discloses a method that measures and calculates the gain spectrum characteristic curve of an optical power booster amplifier unit and the loss spectrum characteristic curve of a loss device. By subtracting the loss spectrum from the gain spectrum, a difference curve is obtained, which helps define a loss characteristic target curve for a gain flattening filter (GFF). This innovative approach ensures optical power flatness across all channels, thereby improving the overall transmission link flatness of the system.
Another notable patent is related to an optical signal transmission system designed for high-speed transmission. This invention introduces a phase modulator in the optical signal-emitting module, allowing for the modulation of optical pulses in phase according to a high-speed data stream. This method effectively reduces non-linear effects during transmission, increasing the power input of individual channels and extending the passive relay regeneration distance.
Career Highlights
Changchun Li is currently employed at Huawei Technologies Co., Limited, where he continues to develop cutting-edge technologies in optical communications. His expertise in the field has positioned him as a key player in advancing optical signal transmission systems.
Collaborations
Throughout his career, Changchun has collaborated with notable colleagues, including Juan Chen and Yue Liu. These partnerships have fostered innovation and contributed to the successful development of his patented technologies.
Conclusion
Changchun Li's contributions to optical signal transmission are noteworthy, with his patents reflecting a deep understanding of the complexities involved in modern communication systems. His work continues to influence the industry and pave the way for future advancements in optical technology.