Optical light sources
Discover EXFO’s broad range of optical light sources that cater to various testing requirements: singlemode or multimode, polarized or non-polarized, broadband or narrowband, tunable, ITU-wavelength-centered and much more. Essential building blocks for fiber testing, EXFO offers optical light sources with multiple wavelength options for component testing, R&D, manufacturing and field environments.![t500s_snippet.jpg](/contentassets/347f99511df14810897e4dbcaabd1e5e/t500s_snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
T200S - High-power continuously tunable laser
Faster and highly reliable testing for optical components, including photonic integrated circuits.
![t500s_snippet.jpg](/contentassets/bca713cf75694966ba2264b9dd255928/t500s_snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
T500S - High-power continuously tunable laser
Faster and highly reliable testing for optical components, including photonic integrated circuits.
![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.
![ftbx-2150_2000x1667-snippet.jpg](/contentassets/26b4e16820f246a9883a5040b78dc2ca/ftbx-2150_2000x1667-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FTBx-2150 - Fiber optic light source
Exceptional selection of single- or multi-wavelength, multimode LEDs and singlemode DFB lasers
![ftbx-2250_2000x1667-snippet.jpg](/contentassets/62c0a0636a094b30a4facf240827a83b/ftbx-2250_2000x1667-snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FTBx-2250 - Broadband light source
Compact, rugged and highly reliable light source—an essential lab testing building block
![ftbx-2850_snippet.jpg](/contentassets/7eef60b34c6e488da7d2ee6c95bc1e1f/ftbx-2850_snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
FTBx-2850 - µITLA tunable light source
Continuous wave (CW), tunable laser with a high-power output, narrow linewidth and high-resolution tunability for coherent/OFDM transmission and WDM network emulation.
![osics-dfb-cwdm_1-mainImage.jpg](/contentassets/6dca895539c64ba08ddf800054be85de/osics-dfb-cwdm_1-mainimage.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
OSICS DFB CWDM - High-power laser diode modules
High-performance distributed feedback laser diodes that are perfect for CWDM network testing
![osics-dfb-lanwdm_1-mainImage.jpg](/contentassets/98962833f12c44488647564cc38f82da/osics-dfb-lanwdm_1-mainimage.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
OSICS DFB LANWDM - DFB lasers
The OSICS DFB LANWDM modules are high-performance distributed feedback laser diodes perfect for testing silicon photonics chips.
![osics-sld_1-mainImage.jpg](/contentassets/02f6475dcc8c406c842da4568d355fc2/osics-sld_1-mainimage.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
OSICS SLD - Broadband light source
Broadband light source with superluminescent light-emitting diodes that is ideal for optical component testing
![osics-t100_snippet.jpg](/contentassets/92e318b2688849f091868dfd5ddb5529/osics-t100_snippet.jpg?rxy=0.5,0.5&width=568&height=438&rmode=crop)
OSICS T100 - External cavity tunable laser module
Stepped external-cavity tunable laser modules that cover all telecom wavelengths