FLS-55: Multi-mode & Single-mode Fiber Optic Light Source with FC/LC/SC (PC/UPC) Adapters


  • Includes FC, SC, and LC adapters to directly connect to UPC/PC FC, SC, and LC fiber connectors
  • Highly stable output power and wavelengths
  • Has four different modulation outputs (CW, 270 Hz, 1 kHz, 2 kHz) at 850/1300 nm (multimode) and 1310/1550 nm (singlemode) wavelengths
  • Flush button design makes it easy to use and prevents dust from entering the unit
  • Shatter-resistant sleeve protects the light source from falls or other damage
  • Backlit LCD screen provides a clear display, ideal for dark places

475.00 (inc.Vat579.50 )

Available on backorder


FLS-55 Fiber Optic Light Source

This fiber optic light source is designed to provide 850/1300 nm or 1310/1550 nm wavelengths. This optical light source is the perfect
tool for providing a stable light source for multimode or single mode fiber measurements. This product is a further development of
Jonard’s previous series of successful model, the FLM-50

FLS-55 – Fiber Optic Light Source provides three different wavelength outputs, 850/1300nm, 1310 nm and 1550 nm, for checking
the optimal loss of single mode fiber optic cables using our FPM-50 Fiber Optic Power Meter (or other power meters).

The FLS-55 Light Source is designed for optimal use with our FPM-50 Optical Power Meter for measuring optical loss on both single
mode and multimode fiber cable. Note that the LC adapter may have up to 0.3 dB of signal loss.


  • Fiber Optic Light Source (MM/SM)
  • FC Adapter
  • LC Adapter
  • SC Adapter
  • (2) Cleaning Swabs
  • (3) AA Batteries (required for operation)
  • Storage Pouch