3. Turn on the power of the fusion splicer, use the preset program for fusion splicing, and remove the dust in the fusion splicer in time during and after use, especially the fixture, dust and fiber fragments in the mirrors and V-shaped grooves. The optical fibers used in CATV include conventional single-mode fiber and dispersion-shifted single-mode fiber, and the operating wavelengths are also 1310nm and 1550nm. Therefore, before splicing, an appropriate splicing procedure should be selected according to the optical fiber and working wavelength used by the system. Unless there are special circumstances, the automatic welding program is generally used.
4. Fabricate the fiber end face. The quality of the fiber end face will directly affect the quality of the connection, so it is necessary to make a qualified end face before fusion splicing. Use a special wire stripper to strip off the coating layer, then wipe the bare fiber with alcohol-dipped cleaning cotton several times with moderate force, and then use a precision fiber cleaver to cut the fiber. The cutting length is 8mm-16mm. For 0.9mm (outer coating) fiber, the cutting length can only be 16mm. fibconet.com
