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1 Product Introduction
This manual applies to the repair of fiber fusion splicer 6481. The fiber fusion splicer is mainly used for
the permanent connection of fiber and is widely used in the production test of fiber communication
engineering and optical passive devices. This product is applicable for connecting the single-mode,
multi-mode, non-zero dispersion, dispersion displacement and bending insensitivity and other quartz
fibers with a cladding diameter of 80μm ~ 150μm. The fusion splicer realizes the integration of optics,
mechanics and electronics, and it shall be kept clean and from strong vibration or shock during use. The
appearance of fiber fusion splicer 6481 is as shown in Fig.1.
Fig.1 Appearance of fiber fusion splicer 6481
2 Functional Block Diagram
Basic working principle of the whole machine is as shown in Fig.2. The high-brightness light source is
used to illuminate the fiber, and the fiber is imaged on the CMOS sensor via a special microscope. The
image characterizes the physical and geometrical positions of the fiber in two directions which are
perpendicular to each other. The two-way fiber images are processed and spliced by FPGA and then
sent to LCD through the ARM system.
CPU system analyzes and processes the image signals to generate various prompting and control
signals. The prompting information is displayed simultaneously with the real-time fiber image. Control
signals drive two propel motors to get two fibers to approach to each other, and then drive two displace
motors to align the fiber core or cladding face in a two-dimensional plane. The discharge signal is given
to the high-voltage board to generate a certain high voltage, and an arc is generated across the
electrodes. The fiber is permanently connected through the high temperature of arc. Finally, the current
fusion loss is calculated according to the physical properties of spliced fiber image, and is displayed on
the screen. In the actual construction process, the heat-shrink protection is conducted for the bare fiber
which is connected successfully through the heater.
