Light sources
Light sources simulate the optical voice, video and data signals of real-life service applications, making them an essential component of a thorough testing process. Discover EXFO’s broad range of light-source testing solutions.![els-50_epm-50_1-snippet.jpg](/contentassets/8ca9c861ec8c4e3795225e153ff57737/els-50_epm-50_1-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FiberBasix 50 - Handheld testers
FiberBasix 50 Handheld Testers deliver simple, accurate measurement of signal attenuation during fiber-optic cable installation.
![fls-140_1-snippet.jpg](/contentassets/40350ac0d0f649d6a190e00f8a1c5c27/fls-140_1-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FLS-140 - Visual fault locator
Highly efficient pocket-size visual fault locator—the ideal complementary tool for any fiber-testing technician.
![fls-240_360_01-snippet.jpg](/contentassets/a95f975475284d85bc3ba32e0e3477d4/fls-240_360_01-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FLS-240 Pocket Pal - Visual fault locator
Straightforward solution for identifying breaks, bends, faulty connectors or splices, as well as other causes of signal loss.
![fls-300_front_2000x1667-snippet.jpg](/contentassets/9b35fba8b57e4295bf719e43ea210701/fls-300_front_2000x1667.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FLS-300 - light source
The most versatile, complete light source available with up to three singlemode wavelengths on a single port, or four wavelengths (two multimode and two singlemode) on two ports.
![fls-600_front_0046_update-2020_2000x1667-snippet.jpg](/contentassets/25cf2521b2db44579b4c196185d409b4/fls-600_front_0046_update-2020_2000x1667-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
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.
![encircled-flux_2000x1667-snippet.jpg](/contentassets/ce87411a4bef4d4d8e5825d1490588f7/encircled-flux_2000x1667-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FLS-600 NS-1548 - Encircled flux compliant light source
Tier-1/2 solutions with controlled source launch conditions for maximum accuracy and repeatability designed to remove uncertainty from multimode fiber testing.
![lxm-pxm_2000x1652_snippet.jpg](/contentassets/2b2c9279496b4b6f9e4901741e4f5d7b/lxm-pxm_2000x1652_snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
PXM/LXM - MPO optical loss test set (OLTS)
Tier-1 MPO-12 fiber certification power meter and light source kit with fastest loss and length measurement based on certification standards for single or multimode fibers.