ADVA Optical Networking has filed a patent for a method to monitor pump lasers in optical amplifiers. By shifting the operating point of the pump laser, the method determines the stage of aging of the laser. This innovation aims to improve the efficiency and reliability of optical transmission links. GlobalData’s report on ADVA Optical Networking gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ADVA Optical Networking, Data center optical networking was a key innovation area identified from patents. ADVA Optical Networking's grant share as of January 2024 was 74%. Grant share is based on the ratio of number of grants to total number of patents.
Method for monitoring pump laser aging in optical amplifiers
A patent application (Publication Number: US20230411924A1) discloses a method for monitoring a pump laser in an optical transmission link. The method involves controlling the injection current or optical power to shift the operating point of the pump laser, allowing for the determination of the stage of aging of the laser without compromising the transmission quality of the link. Additionally, a control device is described that can implement this method by receiving information on the operating point, creating shifted operating points, and determining the stage of aging based on the values obtained.
Furthermore, the control device is configured to compensate for changes in optical output power by controlling the injection current of a second pump laser, ensuring that the optical power of the transmission signal remains constant. The device can also determine the maximum period for which the pump laser meets specified requirements and assess the capacity increase of the optical transmission link without exceeding certain thresholds. By utilizing mathematical regression methods and monitoring the injection current and optical output power values, the control device can effectively manage and monitor the pump laser in the optical amplifier, ensuring optimal performance and longevity of the equipment.
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