The OSICS FBL is a unique tunable laser system that
covers the full telecom wavelength range, from
1260 nm to 1680 nm, the O, E, S, C, L and U bands in a single compact unit.
. The output is SSE free with power of at least 0 dBm
http://yenista.com/IMG/pdf/OSICS-FBL_DS_3-0v2-0.pdf
Bench-top test equipment, Tunable Lasers