A wide set of optical sources is available with different specifications and characteristics. On the one hand, a tunable optical source in the O band (from 1260 to 1360 nm), several tunable optical sources in the S, C and L bands (from 1460 to 1625 nm), a tunable optical source which combines high output power (more than 10 dBm) with ultra-low Source Spontaneous Emission (SSE) and an array of 40 tunable optical sources spaced 0.8 nm each other in the C band. On the other hand, Amplified Spontaneous Emission (ASE) broadband light sources with output powers up to 20 dBm in the C and L bands, pulsed lasers, high power Argon and Helium-Cadmium lasers.