Numerical investigation on local confinement of infrared light in chalcogenide transversely-disordered optical fibers

摘要

We performed numerical analysis of the propagation characteristics of transversely disordered optical fibers withrandom hexagonal As_2Se_3 and AsSe_2 rods for infrared light in the wavelength of 1-10 μm using beam propagationmethod and finite element method. Local confinement by random refractive index distribution was observed inboth methods. It was revealed that The beam diameter is minimal around a hexagonal rod pitch of 0.8 times ofthe wavelength.