HOUSING FOR ENCAPSULATING LIGHT EMITTING MODULE, AND LIGHT EMITTING MODULE

A housing (11) for packaging an optical transmitter module and an optical transmitter module including the housing (11) are disclosed. The housing (11) includes: a body (111), a focusing structure (112), a first three-dimensional (3D) optical waveguide (113), and an optical fiber interface (114). The optical fiber interface (114) is located inside the body (111) and configured to accommodate a single-mode optical fiber (14). The first 3D optical waveguide (113) is embedded in the body (111). The focusing structure (112) is configured to: receive a first single-mode optical signal transmitted by a single-mode laser (13), and enable the received first single-mode optical signal to be focused for a first time at a focal point of the focusing structure (112). The first 3D optical waveguide (113) is configured to: receive the first single-mode optical signal that has been focused for the first time, and output the first single-mode optical signal that has been focused for the first time to the single-mode optical fiber (14). The focal point of the focusing structure (112) coincides with an input end of the first 3D optical waveguide (113). The housing (11) can be adapted to the single-mode optical fiber (14) for single-mode optical signal transmission.