Fiber Coupler Tapering System is mainly used for the mass production of fused fiber optic couplers, especially standard fiber optic couplers with ultra-low additional loss (a typical value of 0.05 dB), broadband fiber optic couplers, wavelength division multiplexers and other fused fiber optic couplers. They are rich in functions and highly compatible, and are very suitable for the mass production of various tapered devices.