The Fujikura 31S is a core alignment fusion splicer designed for single-mode and multimode fiber splicing in field environments. It employs active V-groove alignment combined with dual-camera observation to achieve consistent splice loss performance across SMF, MMF, DSF, and NZDSF fiber types. Active Fusion Control (AFC) technology minimizes re-splicing by optimizing splices on fibers with challenging cleave angles.
The splicer operates at altitudes up to 5,000 m and wind speeds to 15 m/sec, with IP5X dust and IPX2 rain protection. A 5.0″ color LCD touchscreen with 132X magnification (200X post-splice) provides intuitive control and clear fiber observation even in bright sunlight. Splice execution is rapid: 6 seconds in SM FAST mode and 9 seconds in SM AUTO mode. Tube heating for 250 µm coated fiber completes in approximately 25 seconds.
## Technical Specifications
• **Applicable Fiber Types**: Single-mode (G.652, G.657), Multimode G.651, Dispersion-shifted G.653, Non-zero dispersion-shifted G.655
• **Cladding Diameter**: 125 µm; sheath diameter up to 3 mm with clamp
• **Cleave Length**: 5 mm to 16 mm (with sheath clamp)
• **Splice Modes**: 100 total modes
• **Heating Modes**: 30 total modes
• **Typical Splice Loss**: SMF 0.03 dB, MMF 0.01 dB, DSF 0.05 dB, NZDSF 0.05 dB
• **Return Loss**: >60 dB
• **Typical Splice Time**: SM FAST 6 seconds, SM AUTO 9 seconds
• **Typical Tube Heating Time**: 25 seconds (250 µm coating)
• **Splice Result Storage**: Last 10,000 splices
• **Tension Test**: 1.96 N to 2.25 N
• **Viewing System**: Dual-axis 2CMOS camera with 132X/200X magnification
• **Battery**: Rechargeable Li-ion (BTR-11); approximately 200 splice and heat cycles per charge
• **Electrodes**: ~5,000 splice life; tool-less replacement
• **Dimensions**: 131 mm W × 201 mm D × 79 mm H
• **Weight**: 1,300 g (with battery)
• **Protection Sleeves**: 60 mm, 40 mm, and Fujikura micro sleeves
• **Connectivity**: USB 2.0 Mini-B for software upgrades
## Key Features
• Active V-groove alignment with dual-camera system ensures accurate fiber positioning
• Portable design: 1,300 g total weight with integrated Li-ion battery
• Field-rated construction: IP5X/IPX2 protection; operational to 5,000 m altitude
• Fast splicing: 6-second FAST mode execution
• Long electrode life: 5,000 splices with easy replacement
• PC upgradeable via USB connectivity
## Compatibility & Integration
The 31S accommodates standard 125 µm cladding fibers and sheaths up to 3 mm diameter. Compatible with Fujikura 60 mm and 40 mm protection sleeves plus proprietary micro sleeves. Data logging supports 10,000 historical splice records.
