With the popularization of 5G and the development of 6G, satellite communication systems have received increasing attention. China has currently established a satellite network company dedicated to the development of China's satellite communications. Due to the long communication distance of Starlink satellites, EDFA has become an important device at the transmitting and receiving ends of inter-satellite communications. However, radiation in the space environment can cause radiation damage to optical fibers, greatly reducing their performance, especially since doped active fibers contain rare earth elements. After being irradiated, optical fibers will suffer radiation-induced loss, reducing the gain of the amplification system, which will cause the optical system to be in an unstable state or even fail to work normally.
Changjin Photonics' radiation-resistant erbium-doped fiber CJEDF-M-19-RAD is specially designed for long-distance transmission applications in vacuum radiation environments, featuring high reliability and stability. The following is a detailed introduction:

Material Optimization

Changjin Photonics' radiation-resistant erbium-doped fiber CJEDF-M-19-RAD adopts a unique component design, optimizing the proportion of elements such as F, Ge, Al, La, and Er, further improving the radiation resistance of erbium-doped fibers while ensuring no degradation of gain noise.

High Reliability

For Changjin Photonics' radiation-resistant erbium-doped fiber CJEDF-M-19-RAD, the selection and optimization of coating materials play an important role in protecting the fiber and improving its reliability. High-performance coating materials are used to effectively prevent the fiber from being affected by the external environment.

Performance Advantages

Higher Gain: Based on the above design features and material optimization, the fiber can achieve higher signal power output and higher optical-to-optical efficiency.
Lower Noise: Noise is one of the important indicators to measure signal transmission quality. Changjin's radiation-resistant erbium-doped fiber has lower noise.
Smaller Radiation-Induced Gain Attenuation: Under an irradiation dose of 100krad, Changjin's radiation-resistant erbium-doped fiber exhibits less gain degradation under the same pumping conditions, resulting in a longer service life in space.