Silicate all-solid photonic crystal fibers with a glass high index contrast
Silicate all-solid photonic crystal fibers with a glass high index contrast
复制标题
具有玻璃高折射率对比度的硅酸盐全固态光子晶体光纤
DOI：
10.1117/12.723454
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
R. Stępień
中科院分区：
文献类型：
--
作者：
R. Buczyński;D. Pysz;I. Kujawa;P. Fita;Monika Pawłowska;J. Nowosielski;C. Radzewicz;R. Stępień
利用两块热匹配的玻璃，一块作为背景，另一块作为内含物晶格，可以制备出全固体光子晶体光纤。全固体多孔光纤（SOHO）的光学特性对光子包层结构非常敏感，与具有空气孔的PCFs非常相似，并且强烈依赖于所用材料的色散特性。当保证玻璃间的高折射率对比时，光子晶体光纤可以利用光子带隙机制有效地引导光。当多组分软玻璃用于纤维制造时，这可以很容易地实现。本文报道了F2/NC-21硅酸盐全玻璃PCFs的最新进展。F2是一种商用玻璃（Schott Inc.），具有高浓度的氧化铅（PbO=45.5%），折射率nD=1.619。它既可以作为背景材料，也可以作为微棒（夹杂物）的材料。在IEMT室内合成了硼硅酸盐玻璃（B2O3=26.0%） NC-21玻璃。NC21的指数nD=1.533，在结构中用作微棒（夹杂物）材料或背景玻璃。所选的两种玻璃在1.55 μm波长处具有0.084的高折射率对比度。在本报告中，我们提出了优化填充因子d/Λ和减小晶格间距Λ所需的新结果，以获得1.55 μm的有效制导。采用基于平面波展开法的全矢量模式求解器对SOHO F2/NC21光纤进行了数值分析。本文报道了具有两种引导机制的光子晶体光纤：具有高折射率芯的有效折射率（由NC21玻璃制成的低折射率内含物和F2用作背景玻璃）和具有低折射率芯的光子带隙（由F2玻璃制成的高折射率内含物和NC21用作背景玻璃）。
An all-solid photonic crystal fiber can be developed using two thermally matched glasses with one glass forming the background, and the other the lattice of inclusions. Optical properties of all-solid holey fibers (SOHO) are sensitive to the photonic cladding configuration, much the same as PCFs with air holes, and strongly depend on dispersion properties of the materials used. When a high index contrast between the glasses is assured photonic crystal fiber can effectively guide light with photonic band gap mechanism. This can be easily achieved when multicomponent soft glass is used for fiber fabrication. We report on new developments of F2/NC-21 silicate all-glass PCFs. F2 is a commercially available glass (Schott Inc.) with a high concentration of lead-oxide (PbO=45.5%) and the refractive index nD=1.619. It can be used both as the background material and as a material for micro-rods (inclusions). A borosilicate glass (B2O3=26.0%) NC-21 glass has been synthesized in-house at IEMT. NC21 has the index nD=1.533 and was used as the material for micro-rods (inclusions) or as a background glass in the structures. The two selected glasses have a high index contrast equal to 0,084 at 1,55μm wavelength. In this report we present new results on optimization of the filling factor d/Λ and reduction of the lattice pitch Λ necessary to obtain efficient guidance at 1.55 μm. The numerical analysis of SOHO F2/NC21 fibers has been carried out using a full-vector mode solver based on the plane-wave expansion method. In our paper we report on photonic crystal fibers with two guiding mechanisms: an effective index with a high index core (low index inclusions made of NC21 glass and F2 used as a background glass) and a photonic band gap with a low index core (high index inclusions made of F2 glass and NC21 used as a background glass).