Abstract: Disclosed is 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. 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. 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.

Abstract: A henhouse includes a gable, a sidewall, and a roof. An inner chamber parallel to the sidewall is provided in the middle of the henhouse. The inner chamber includes an inner wall parallel to the sidewall and an inner roof. A partition is provided between the sidewall and the inner wall. An air inlet plate is provided between the two inner walls located below the inner roof. A pressure chamber is formed between the inner roof and the air inlet plate. A premixing chamber is formed between the inner roof and the roof. A plurality of fans and air inlet windows are uniformly provided on the inner roof. A plurality of air inlet holes and small inlet windows are uniformly provided on the air inlet plate. A plurality of wet curtains and an air vent are provided on the sidewall. A plurality of air outlet slots are uniformly provided on the inner wall.

Abstract: A premixed underground ventilated henhouse includes a gable, a sidewall, a roof and a floor. An inner chamber is further provided in the middle of the henhouse. A partition is hermetically provided between the sidewall and an inner wall. An air inlet plate is provided between the two inner walls. A plurality of fans and a plurality of air inlet windows are uniformly provided on an inner roof. A plurality of wet curtains and an air vent are provided on the sidewall. Air outlet slots are uniformly provided on the inner wall. An underground exhaust bunker is provided under the floor. A vent pipe and a fan are provided on one side of the underground exhaust bunker. An air outlet is provided at an upper end of the vent pipe.

Abstract: A premixed underground ventilated henhouse includes a gable, a sidewall, a roof and a floor. An inner chamber is further provided in the middle of the henhouse. A partition is hermetically provided between the sidewall and an inner wall. An air inlet plate is provided between the two inner walls. A plurality of fans and a plurality of air inlet windows are uniformly provided on an inner roof. A plurality of wet curtains and an air vent are provided on the sidewall. Air outlet slots are uniformly provided on the inner wall. An underground exhaust bunker is provided under the floor. A vent pipe and a fan are provided on one side of the underground exhaust bunker. An air outlet is provided at an upper end of the vent pipe.

Abstract: A henhouse includes a gable, a sidewall, and a roof. An inner chamber parallel to the sidewall is provided in the middle of the henhouse. The inner chamber includes an inner wall parallel to the sidewall and an inner roof. A partition is provided between the sidewall and the inner wall. An air inlet plate is provided between the two inner walls located below the inner roof. A pressure chamber is formed between the inner roof and the air inlet plate. A premixing chamber is formed between the inner roof and the roof. A plurality of fans and air inlet windows are uniformly provided on the inner roof. A plurality of air inlet holes and small inlet windows are uniformly provided on the air inlet plate. A plurality of wet curtains and an air vent are provided on the sidewall. A plurality of air outlet slots are uniformly provided on the inner wall.