We proposed that nanomaterials can be used to change the characteristics of standard fibers. After two stages, preform
fabrication and fiber drawing, a novel inner cladding fiber with InP nano thin film has been successfully fabricated by
the means of MCVD. The thickness of the InP film is about 60nm. The electric field distribution is simulated through the
the finite element method. The simulation result indicates that the InP nano film can confine the electric distribution in
the core. In addition, it is calculated that the effective refractive index is 1.585.
We propose that nanomaterials can be used for fibers. A novel nano-InP doped fiber has been fabricated by the method of
modified chemical vapor deposition (MCVD).It has been measured that the doping concentration is 0.1%. The
relationship between refractive index and the wavelength is obtained by fitting experimental data to Sellmeier equation.
Dispersion of the fiber has been calculated in the wavelength range 1.2-1.6μm. As the wavelength varies from 1.2μm to
1.60μm, dispersion parameter D increases but is always negative. It has found that the dispersion of nano-InP doped
fibers is strongly changed compared to standard single-mode fibers, due to the nano-InP dopant which lead to a higher
refractive index difference.