Optical secondary module and optical module

The invention provides an optical secondary module and an optical module. The optical secondary module comprises a cavity body and a clamp groove connected with the cavity body. A connection hole witharc-shaped circular corners is arranged in one side wall of the cavity body. Multiple groups of optical assemblies are arranged in the cavity body. A cover plate is embedded into the cavity body andused for covering the upper end face of the cavity body. A fiber array comprises an upper substrate, a lower substrate and fibers arranged between the upper substrate and lower substrate. The fiber array is connected with the clamp groove in a clamped and fixed manner and is inserted into the side wall of the cavity body through the connection hole. The clamp groove is connected with the cavity body, so optical coupling between the fiber array and the optical assemblies in the cavity body is achieved after the fiber array is connected to the clamp groove. In addition, by use of the connectionhole with the arc-shaped ci