About Optical Light Sources
A fibre light source is used to inject light into a fibre optic cable for the purpose of testing it. They come in two basic varieties: light emitting diodes (LEDs) and laser diodes. They’re further differentiated by the wavelength they produce and the type of cable they test.

Ceyear 6313C Optical Laser Source
Telecommunication, CATV and LAN cable tests
The Ceyear 6313C Optical Laser Source is a handheld dual-channel instrument which can be used in telecommunication, CATV and LAN cable tests.

Viavi SmartClass Fiber OLS-85 Inspection-Ready Optical Light Sources
Complete jobs faster, correctly, and on time—right the first time
The OLS-85 inspection-ready optical light source is the ideal partner to the SmartClass Fiber OLP-85 and OLP-85P to perform automatic loss test.

Viavi SmartPocket OLS-34/-35/-36/-37/-38 Optical Light Sources
Combines up to 4 wavelengths
A family of pocket-sized and low-cost optical light sources for the installation and maintenance of singlemode and multimode fiber optic networks.