DecoLi applies for patents related to fiber optic amplifier testing, with an automated testing system that efficiently and accurately measures EDFA performance.

April 2 News, the State Intellectual Property Office information shows that Wuxi Deke Li Optoelectronic Technology Co., Ltd. has applied for a patent titled “Automated Testing System for Er-Doped Fiber Amplifier Performance.” The application publication number is CN121762180A, the application number is CN202512040547.5, the publication date is March 31, 2026, the filing date is December 31, 2025. The inventors are Yang Suyu, Yu Liang, Peng Zhiyi, Wei Qiliang, Chen Xiaopeng, Wan Guangyong. The patent agency is Wuxi Huayuan Patent Trademark Office (general partnership), patent agent Guo Gujia. The classification numbers are G01M11/00, G01M11/02.

The patent abstract states that this application discloses an automated testing system for the performance of erbium-doped fiber amplifiers, involving optical technology. In this system, the light source is connected via an optical calibration module and a 50:50 beam splitter to the first optical input of a 22 optical switch and to the optical input of the tested EDFA, while the second optical input of the 22 switch connects to the optical output of the tested EDFA. The two optical outputs of the switch connect to a spectrometer and an optical power meter OPM2, respectively. During system calibration and testing phases, the test host performs unified control and scheduling. The test host calibrates the measurement results of the power meter and spectrometer using system calibration values determined during calibration, enabling the acquisition of multiple performance metrics of the tested EDFA, including output optical power, gain flatness, and noise spectral lines. The process requires no manual intervention, allowing for automated, efficient, high-precision, and consistent testing of EDFA performance.

Deke Li was established on January 31, 2000, and listed on the Shanghai Stock Exchange on August 9, 2022. Its registered and office address is in Wuxi, Jiangsu Province. It is a leading domestic manufacturer of optical communication products, focusing on core optical communication devices and equipment, with strong technical capabilities. Its products are widely used in the communications field.

Deke Li’s industry classification is “Communication - Communication Equipment - Communication Network Equipment and Devices,” involving concepts such as CPO, optical communication, and optoelectronics. Its main business includes R&D, production, and sales of optical transceiver modules, optical amplifiers, and optical transmission subsystems, used in national key support areas such as backbone transmission, 5G, and data center interconnection.

In 2025, Deke Li achieved operating revenue of 934 million yuan, ranking 9th among 9 companies in the industry, far below the industry leader ZTE Corporation’s 133.9B yuan and second-place InnoLight’s 38.24 billion yuan. The industry average is 23.74B yuan, with a median of 2.53B yuan. In main business, transmission revenue was 638 million yuan, accounting for 68.33%; access and data services revenue was 282 million yuan, accounting for 30.17%; others (supplementary) 14.02 million yuan, accounting for 1.50%. Net profit in 2025 was 71.56 million yuan, also ranked 9th in the industry, far below the top InnoLight’s 11.58 billion yuan and ZTE’s 5.57B yuan. The industry average net profit is 2.23B yuan, with a median of 580 million yuan.

Recent patent information for Wuxi Deke Li Optoelectronic Technology Co., Ltd. is as follows:

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