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公开(公告)号：US20220311201A1
公开(公告)日：2022-09-29
申请号：US17638887
申请日：2020-08-31
Applicant: Aalto University Foundation sr
Inventor： Zhipei Sun , John Rönn
Abstract: The present invention concerns a waveguide amplifier and a waveguide amplifier device comprising it. In addition, the invention concerns a method for producing such waveguide amplifier. The invention especially relates to erbium doped waveguide amplifiers having a controlled doping concentration.
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