The tiny fiber is encapsulated in a plastic sheath that allows it to bend without breaking. In general, a transmitting device at one end of an optical fiber transmits a light pulse to the optical fiber using a light-emitting diode or a laser beam and a receiving device at the other end of the optical fiber detects the pulse using a photosensitive element.
Fiber optic splice closure, which comprises the following steps: Pretreatment: thermal stripping method to remove coating layer. Microscopic Measurements: The offset and offset direction of the fiber's core and inner cladding center of gravity are obtained. Grinding: The optical fiber cladding is ground along the direction of the line connecting the center of gravity of the core and the inner cladding. Alignment welding four steps, the use of microscopic measurements obtained fiber core and the inner cladding center of gravity offset and offset direction, so as to one of the optical fiber inner cladding to ensure that the inner cladding center of gravity and the core at the same time So that the fiber core still maintains the accurate alignment after the optical fiber splice, effectively reducing the light loss, light scattering, light reflection and heat absorption caused by the light absorption of the splice point, so as to improve the optical continuity of the splice point Reducing the need for heat dissipation of the splice package reduces the potential for damaging other optical components in the fiber laser system.
Fiber optic splice closureis the central part of the continuation of the work, so high-performance splicing machine and welding process is a very necessary scientific operation. Should be based on fiber optic cable engineering requirements, equipped with battery capacity and precision suitable welding equipment. According to the material and type of optical fiber before welding, set the key parameters of the best pre-melting main current and time and the amount of fiber feeding.
Welding process should also promptly clean the welding machine "V" groove, electrode, objective, welding room, at any time to observe whether there are bubbles in the welding, too thin, too thick, virtual melting, separation and other undesirable phenomena, pay attention to OTDR test instrument tracking monitoring As a result, timely analysis of the causes of these undesirable phenomena, to take appropriate measures to improve. If there are many false melting phenomenon, should check the welding of the two optical fiber materials, the model is matched, the cutter and the welding machine is dust pollution, and check the electrode oxidation status, if there is no problem should be properly increased welding current.