EXFO FLS-600 Light Source

Part of EXFO’s 600 handheld series, the FLS-600 Light Source is designed for first-class versatility—it offers laser and LED models, as well as various wavelength options.


  • Controlled multimode launching output
  • Error-free, time-saving test features
  • Three-year warranty for low cost of ownership
  • EF Ready: use with external launch mode conditioner for EF-compliant multimode results
  • Up to three singlemode wavelengths (1310 nm, 1550 nm, and 1490 nm or 1625 nm) on a single port, or four wavelengths (850/1300 nm and 1310/1550 nm) on two ports


  • Link-loss characterization
  • LAN/WAN certification

Kit Includes

  • Instruction Manual (Hard Copy)
  • Calibration Certificate (Hard Copy)
  • Rechargeable Battery
  • AC Adapter/Charger
  • Shoulder Strap
More Information
Manufacturer EXFO
Manufacturer's Part Number FLS-600
Ships in 4-6 Weeks

Using the FLS-600 in Auto-Switching Mode allows to automatically toggle between available wavelengths. When using this source with a compatible power meter (FPM/FOT-600), the latter recognizes the wavelength in use and switches to the proper calibration parameter.

Signal encrypting can also give the receiving-end information on the power to be used as reference, helping ensure efficient referencing, even when the two units are far apart.

EXFO’s FLS-600 allows for the testing of passive optical networks (PONs) at 1310 nm, 1490 nm and 1550 nm, the three wavelengths recommended by the ITU-T (G.983.3) for PONs.

Like all EXFO portable instruments, the FLS-600 is built for ruggedness, perfect for the harshest test conditions. It also features a backlit keypad/LCD , for easy operation in darker environments.

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