Patent ID: 11955764
Assignee: HMN TECHNOLOGIES CO., LIMITED
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A submarine network device, comprising a fiber set, a pump laser set, an erbium doped fiber amplifier (EDFA) set, a primary fiber coupler (CPL) set and a secondary CPL set, wherein the primary CPL set comprises N primary CPLs, the secondary CPL set comprises N secondary CPLs, with N being an integer greater than or equal to 3, the fiber set is configured to connect the pump laser set, the primary CPL set, the secondary CPL set and the EDFA set, and an input port of each primary CPL in the primary CPL set is at least connected with a pump laser, an output port of each secondary CPL in the secondary CPL set is at least connected with an EDFA, each primary CPL in the primary CPL set is adjacent to the other two primary CPLs in the primary CPL set, each secondary CPL in the secondary CPL set is adjacent to the other two secondary CPLs in the secondary CPL set, output ports of each primary CPL in the primary CPL set are respectively connected with two different secondary CPLs that are spaced by a secondary CPL, and input ports of each secondary CPL in the secondary CPL set are respectively connected with two different primary CPLs that are spaced by a primary CPL;
each pump laser in the pump laser set is configured to emit pumping laser light, each primary CPL in the primary CPL set is configured to couple pumping laser lights received from the pump lasers and output two lines of primary pumping laser light, the two lines of primary pumping laser light being respectively output to the two different secondary CPLs, and each secondary CPL in the secondary CPL set is configured to couple the received primary pumping laser light and output at least one line of secondary pumping laser light to the at least one EDFA.