Fabrication and characteristics of bismuth oxide based highly nonlinear fiber(<Feature>Glass and Ceramic Materials for Photonics)

概要

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Highly nonlinear fiber with step-index type and microstructure type were fabricated using Bi_2O_3 based high refractive index glasses. Step-index type fiber with effective core area of 3.3μm^2 was fabricated using core and cladding glass whose refractive index is 2.22 and 2.13. This fiber exhibits high nonlinearity (γ=1300W^<-1>km^<-1>) because of high nonlinearity of the glass material and the small effective core area. The fiber also exhibits low loss (-1.9dB/m) and fusion spliceability to silica fiber. Microstructure type fiber which shows low GVD and high nonlinearity simultaneously was fabricated by a novel inflating method. This fiber has a guiding core structure to reduce the fusion splicing loss when air holes collapse. Wide wavelength tuning range due to small GVD in four wave mixing experiment was demonstrated.
社団法人日本セラミックス協会の論文
2008-10-01