Used Fusion Splicers for Sale

Cladding alignment splicers align the two fiber ends using the outer cladding surface as the reference. This is fast and inexpensive, and it works well for standard G.652 single-mode fiber where the core is well-centered within the cladding. Core alignment splicers use a local injection and detection system or a profile alignment system (PAS) to directly observe and align the fiber cores, compensating for core-cladding concentricity errors. Core alignment is required for low-loss splicing of specialty fibers (PM fiber, large mode area fiber, DSF) and for splice loss below 0.02 dB in demanding applications. Most Fujikura FSM-series and all Sumitomo Type-8x series splicers use core alignment.

For outside plant single-mode fiber runs, individual splice loss should be below 0.1 dB per splice for standard network design, with a target of 0.05 dB or better for long-haul links. OTDR typically shows 0.02 to 0.05 dB on a well-executed splice with a quality splicer and clean cleave. Multimode splices for data center OM3/OM4 runs should be below 0.3 dB. PM fiber splices for coherent systems should be below 0.1 dB with extinction ratio maintained above 25 dB — this requires a PM-capable splicer with rotational alignment, such as the Fujikura FSM-100M or Sumitomo Type-71PMF.

Electrode life depends on arc current setting and fiber type. For standard single-mode fiber at typical arc settings, plan for 2,000 to 3,000 arcs per electrode pair. High-current settings for specialty fiber (DCF, large mode area, or heavily doped fibers) consume electrodes faster. Most Fujikura and Sumitomo splicers track arc count and display a replacement warning. Worn electrodes show up as increased splice loss scatter, asymmetric arc shape in the camera view, and higher arc current needed to reach the same splicing temperature. We stock electrode pairs for Fujikura FSM-series and Sumitomo Type-8x series splicers.

Arc calibration is the splicer procedure that measures the actual arc temperature using a test fiber and adjusts the arc parameters to match the factory reference values. It compensates for electrode wear, changes in ambient temperature, altitude, and humidity. Most splicers have an automatic arc calibration routine that runs in 3 to 5 minutes. You should run arc calibration whenever you change electrodes, when the splicer has been moved to a significantly different altitude or temperature, when splice losses are higher than expected, or when the arc looks asymmetric in the camera view. At Aumictech, full arc calibration with verification is part of every fusion splicer service.

Yes. Any fusion splicer can physically splice multimode fiber — the arc fuses glass regardless of fiber type. However, the arc parameters optimized for single-mode G.652 fiber (50/125 or 62.5/125 micron core) differ from those for standard single-mode fiber (9/125 micron core). Most modern splicers have separate splice programs for SM, MM, DS, and specialty fiber. You set the program to match the fiber, and the splicer adjusts arc current and duration. For splicing MM to SM (hybrid splices), you need a core alignment splicer to minimize the modal mismatch loss.

Fujikura FSM-series splicers are widely regarded as the most rugged for field use. The FSM-60S and FSM-70S have weatherproofing and can operate in rain. The clamshell design is fast to load. Sumitomo Type-81C and Type-82C are strong competitors — excellent splice quality and a very intuitive user interface. AFL S178A and S179A are more affordable and perform well for routine outside-plant work, though the electrode and V-groove life tends to be shorter than Fujikura or Sumitomo. For lab use where speed and field ruggedization are less important, any of the three brands produce excellent splice quality. For high-volume field splicing, Fujikura is the most commonly specified brand by major carriers.

Fusion splicer repair evaluation is free — we test the unit and provide a written quote before any work begins. Typical repair costs: electrode replacement is $150 to $250 including labor and parts. V-groove cleaning or replacement is $200 to $400. Motor and actuator alignment service is $300 to $600. Camera or CCD replacement is $400 to $800. Full arc recalibration following repair is included at no extra charge. Turnaround is typically 2 to 5 business days depending on parts. We service Fujikura FSM-series, Sumitomo Type-7x and Type-8x series, AFL S-series, and Ericsson FSU-series splicers.

The minimum kit for making production splices: a fiber cleaver (Fujikura CT-30, CT-50, or Sumitomo FC-6 are common), fiber stripping tool matched to your coating diameter (250 or 900 micron), isopropyl alcohol and lint-free wipes for cleaning, and spare electrodes. For field use, add a battery pack if the splicer does not have one, a carrying case, and a fiber scope for checking connector cleanliness before splicing. For PM fiber, you need a PM alignment fixture or a splicer with built-in polarization alignment — confirm this is included before purchasing a used splicer for PM work.

Fusion splicer calibration at Aumictech covers arc calibration (arc power and duration optimization against a reference test procedure), V-groove alignment verification, cleave angle detection accuracy, and splice loss estimation accuracy check. The result is a calibration report documenting the arc parameters and measured splice performance. Annual calibration is recommended for splicers in active field use. For splicers used in lab or quality-critical environments, calibrate after any electrode change and every 6 months. Standard calibration is $450; with full measured data report, $650.