Fujikura 70S Fiber Fusion Splicer
The Fujikura 70S Fiber Fusion Splicer is a professional core-alignment fusion splicer for SM and MM optical fibers. With fast splicing, low typical splice loss, automatic wind protection, automatic arc calibration and a rugged field design, it is well suited for fiber-optic network installation, maintenance and repair.
Description
Fujikura 70S Fiber Fusion Splicer – Professional SM & MM Core Alignment Fusion Splicing Machine for Fiber Optic Networks
The Fujikura 70S Fiber Fusion Splicer is a professional core-alignment fusion splicing machine designed for efficient and reliable joining of optical fibers. It supports both single-mode (SM) and multi-mode (MM) fibers and is suitable for fiber-optic network installation, telecommunications and other optical-fiber applications.
The 70S combines a ruggedized design, automatic wind protector, integrated tube heater, large color display and programmable splice modes. Fujikura’s published specifications indicate typical splice losses of 0.02 dB for SM fiber and 0.01 dB for MM fiber under specified measurement conditions.
Main Benefits
Professional core-alignment fusion splicing
Supports SM and MM optical fibers
Fast fiber splicing
Low typical splice loss
Automatic wind protector
Integrated tube heater
Large 4.7-inch color LCD
Ruggedized field design
Automatic arc calibration
Multiple programmable splice modes
High-capacity rechargeable battery
Integrated workstation carrying case
Suitable for demanding fiber-optic installation work
Key Features
Core Alignment Technology
The Fujikura 70S uses core alignment technology to accurately position optical fibers before fusion splicing, helping achieve consistent low-loss connections.
SM & MM Fiber Compatibility
The 70S supports common optical-fiber types including:
Single-mode SMF
G.652
G.657
Multi-mode MMF / G.651
DSF / G.653
NZDSF / G.655
Fast Splicing
The 70S provides several automatic and fast splicing modes. Published specifications give approximately:
ULTRA FAST: 6 seconds
SM FAST: 7 seconds
SM AUTO: 10 seconds
Low Splice Loss
Typical splice-loss specifications include:
SM: 0.02 dB
MM: 0.01 dB
DSF: 0.04 dB
NZDSF: 0.04 dB
Automatic Wind Protector
The automatic wind protector helps protect the fiber-splicing area from environmental airflow during the fusion process. The 70S was designed for efficient field operation in demanding conditions.
Automatic Arc Calibration
The 70S incorporates automatic arc-calibration functionality to compensate for changes in electrode and environmental conditions, helping maintain consistent splicing performance.
Key Specifications
Brand: Fujikura
Model: FSM-70S / 70S
Product Type: Fiber Fusion Splicer
Alignment Method: Core alignment
Fiber Count: Single fiber
Fiber Types: SMF, MMF, DSF, NZDSF and other compatible single-mode fibers
Cladding Diameter: 80–150 μm
Coating Diameter: 100–3,000 μm
Cleave Length: 5–16 mm with sheath clamp
Typical SM Splice Loss: 0.02 dB
Typical MM Splice Loss: 0.01 dB
Typical DSF Splice Loss: 0.04 dB
Typical NZDSF Splice Loss: 0.04 dB
SM Fast Splice Time: Approximately 7 seconds
Ultra Fast Splice Time: Approximately 6 seconds
SM Auto Splice Time: Approximately 10 seconds
Typical Tube Heating: Approximately 13–14 seconds depending on sleeve/mode
Splice Modes: Up to 100
Heat Modes: Up to 30
Splice Result Storage: Up to 20,000 results according to published 70S specifications
Display: 4.7-inch color LCD
Camera: 2-axis CMOS
Tension Test: Approximately 1.96–2.25 N
Battery: Rechargeable lithium-ion
Battery Capacity: Approximately 200 splice/heating cycles per charge
Protection: Ruggedized field design
Carrying Case: Multifunction transit case with integrated workstation
Applications
Fiber-optic network installation
FTTH installation
Telecommunications
Backbone fiber networks
Data communication networks
Fiber repair
Fiber maintenance
Fiber-optic cable installation
Optical communication infrastructure
Field service and network commissioning
Optoelectronic equipment applications
Package:
Fujikura 70S fusion splicer
AC adapter
AC power cord
Carrying case
Spare electrodes
USB cable
Sleeve loader
Alcohol pot
Screwdriver
Instruction documentation
Quick reference guide
What is the Fujikura 70S used for?
It is used to fusion-splice optical fibers, joining fiber ends together to create a low-loss permanent connection.
Does the Fujikura 70S support both SM and MM fiber?
Yes. The 70S supports single-mode and multi-mode optical fibers, as well as several other compatible fiber types.
What is the typical splice loss?
Published specifications indicate approximately 0.02 dB for SM fiber and 0.01 dB for MM fiber under specified test conditions.
How fast can it splice fiber?
The 70S has a published Ultra Fast mode of approximately 6 seconds and SM Fast mode of approximately 7 seconds.
What is the maximum coating diameter?
The published specification lists 100–3,000 μm for the coating/sheath diameter.
Is the Fujikura 70S suitable for field work?
Yes. Its ruggedized design, automatic wind protector, integrated heater and multifunction carrying case were designed for efficient field operation.






