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

Claim 18:
19. A submarine network device, comprising: 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 at least comprises three CPL primary CPLs, the secondary CPL set at least comprises three secondary CPLs, 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 connected with at least one EDFA in the EDFA set, output ports of at least one 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 at least one 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, at least one 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 at least one 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.