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公开(公告)号:US20240195138A1
公开(公告)日:2024-06-13
申请号:US18533407
申请日:2023-12-08
IPC分类号: H01S3/067 , H01S3/0915 , H01S3/13 , H04J14/00
CPC分类号: H01S3/06716 , H01S3/0915 , H01S3/13013 , H04J14/052
摘要: An integrated, high-performance amplifier subsystem is based on an optimized design of a multimode erbium-doped fiber amplifier (MM-EDFA) and a wavelength- and mode-selective pump coupler (PC). The length and ring doping profile of the MM-EDF and the pump-mode powers can be optimized to obtain low mode-dependent gain (MDG), low noise figure (NF) and high power-conversion efficiency (PCE). The pump coupler can be designed with high pump-mode efficiency and low signal-mode loss by appropriate selection of the pump mode group and the index exponent of an intermediate graded-index (GI) coupling fiber.