Optical engine assembly, optical interconnection system, and network device

An optical engine assembly, comprising an optical engine, a coupling base, and a fiber array unit, wherein the coupling base is fastened on the optical engine, a first guide portion is disposed on the coupling base, a second guide portion is disposed on the fiber array unit, one of the first guide portion and the second guide portion is a guide rod, the other of the first guide portion and the second guide portion is a guide hole, the guide rod is pluggably connected to the guide hole, and the optical engine is configured to convert an optical signal to an electrical signal and to convert an electrical signal to an optical signal;

• and
• an optical signal that is input from the fiber array unit passes through the coupling base and reaches the optical engine, and/or an optical signal that is output by the optical engine passes through the coupling base and reaches the fiber array unit for outputting,
• wherein the optical engine comprises a core and a first optical conduction portion disposed on the core, the coupling base further comprises a base and a second optical conduction portion, the base is fastened on a surface of the core, the base and the core are disposed in a stacked manner,
• wherein the optical engine assembly further comprises a limiting part, and the limiting part is configured to limit locations of the fiber array unit and the coupling base relative to each other,
• wherein the limiting part comprises a main body and an elastic arm disposed in a manner of being connected to the main body, the main body covers the coupling base and a part of the fiber array unit, and the elastic arm abuts against the fiber array unit,
• wherein the elastic arm comprises a first elastic arm and a second elastic arm, each of the first elastic arm and the second elastic arm comprises a connecting portion and an abutting portion that are connected to each other, the main body comprises a first end and a second end that are disposed opposite to each other in a direction in which the base and the core are stacked, the first end of the main body is disposed close to the core, the connecting portion of the first elastic arm is connected to the first end of the main body fixedly, the connecting portion of the second elastic arm is connected to the second end of the main body fixedly, the main body, the first elastic arm, and the second elastic arm jointly enclose a clamping space, the coupling base and the part of the fiber array unit are accommodated in the clamping space, the abutting portion of the second elastic arm abuts against the coupling base, and the abutting portion of the second elastic arm abuts against the fiber array unit.