SINGLE OPTICAL FIBER BI-DIRECTIONAL SUB-ASSEMBLY

A single-fiber bidirectional sub assembly, includes: a base (10), a laser (21), an optical receiver (23), a wavelength splitter (25), and a sealing cover (30) with a lens (31). The base (10) includes a surface (11), an accommodation groove (13) is disposed on the surface (11), the accommodation groove (13) includes a groove bottom wall (131) parallel to the surface (11), a wavelength division surface (251) is disposed in the wavelength splitter (25), the optical receiver (23) is disposed on the groove bottom wall (131), the wavelength splitter (25) is disposed in the accommodation groove (13), and shields the optical receiver (23), the laser (21) is located on one side of the accommodation groove (13), and the wavelength division surface (251) faces the laser (21), and an included angle is formed between the wavelength division surface (251) and the groove bottom wall (131) on which the optical receiver (23) is located; and the sealing cover (30) covers the base (10), and accommodates the laser (21), the optical receiver (23), and the wavelength splitter (25), a beam of the laser (21) is reflected to the lens (31) by the wavelength division surface (251), and the optical receiver (23) receives and transmits an optical signal that is transmitted through the lens (31) and the wavelength splitter (25).