Flat suppercontinuum generation in the inner cladding fiber with InP nano thin film

We present the fabrication procedure of a novel inner cladding fiber with InP nano-thin film. A flat supercontinuum over 100nm in the telecommunication band is generated by infecting 1550nm, 120fs, 50MHZ repetition rate optical pulse into this kind of fiber. The supercontinuum generation of different fiber lengths and at different pump power is studied. The results indicate that the width of the supercontinuum spectra can be influenced by the fiber length and pump power. The longer fiber at higher pump power can produce broader supercontinuum spectrum.