The invention provides an
optical module, an optical splitting and combining device, an optical connector, an optical
assembly and a communication
system, and belongs to the technical field of
optical communication. In the light sending direction, each light emitting
assembly of the light module sends a path of
light beam to the light annular device. The optical annular device receives the multiple paths of light beams and sends the light beams to the wave splitting and combining
assembly. And the wave splitting and combining assembly combines the multiple paths of light beams and sends the combined light beams to the outside through the single-
fiber bidirectional optical interface. In the light receiving direction, the wave splitting and combining assembly splits a
light beam received through the single-
fiber bidirectional optical interface into multiple paths of light beams and sends the multiple paths of light beams to the light annular device. The optical annular device sends one path of
light beam to each optical receiving assembly. Visibly, the optical annular device transmits multiple paths of narrow-band light beams, and the single-
fiber bidirectional optical interface transmits one path of wide-band light beams. According to the
optical module, the optical
ring device is arranged to process the multiple paths of light beams with different wave bands, the
wavelength range of the light beams which can be processed by the optical
ring device is expanded, and then the single-fiber
wavelength capacity of the
optical module is expanded.