Optical fiber packaging tube, optical fiber packaging assembly, optical fiber packaging structure and pumping source

The utility model provides an optical fiber packaging tube, an optical fiber packaging assembly, an optical fiber packaging structure and a pumping source, and the optical fiber packaging tube is used for packaging an optical fiber. A hollow channel is defined by the pipe body. The hollow channel comprises a first channel and a second channel which are communicated with each other; a first limiting part is arranged between the first channel and the second channel; the pipe body is provided with a first through hole and a second through hole which are communicated with the first channel, and the first through hole and the second through hole are formed in the mode that the opening directions are opposite; the pipe body is further provided with a third through hole and a fourth through hole which are communicated with the second channel, and the third through hole and the fourth through hole are formed in the mode that the opening directions are opposite. According to the invention, the optical fiber is package