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Construction of Environment far Assisting Design and Modeling of Photonic Crystal Fibers and Its Application to Design of Fiber-Based Optical Devices

光子晶体光纤辅助设计建模环境构建及其在光纤光学器件设计中的应用

基本信息

批准号：
15360178
负责人：
KOSHIBA Masanori
金额：
$ 4.86万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15360178/
关键词：
photonic crystal fiber holey fiber photonic band-gap fiber computer-aided-design finite element method

项目摘要

The results of this research are as follows :1.An analysis method based on a full-vectorial finite element method was developed for design and modeling of photonic crystal fibers, the single-mode wavelength range, chromatic dispersion, mode area, mode-field diameter, beam divergence, confinement loss, bending loss, splice loss, and polarization mode dispersion were investigated. A method of real-model simulation was also developed for characterizing transmission properties of fabricated fibers.2.In order to control the dispersion and the dispersion slope of holey fibers, a new controlling technique of chromatic dispersion was developed, and the relationship among the wavelength dispersion, confinement loss, and effective area was clarified. Fiber-based optical devices based on a multi-core holey fiber such as directional coupler, wavelength filter, and polarization splitter were newly constructed, and the fiber parameters such as lattice constant, hole diameter, and core separation were optimized.3.The dispersion and leakage properties for the recently reported low-loss photonic band-gap fiber were studied in detail and it was found that the surface modes have a strong impact on these properties. From our research results, it was confirmed that when surface modes are present it is very likely they strongly modify the dispersion, leakage loss, and scattering loss of the bare air-core modes.

主要研究结果如下：1.提出了一种基于全矢量有限元法的光子晶体光纤的设计和建模方法，研究了光子晶体光纤的单模波长范围、色散、模场面积、模场直径、光束发散角、限制损耗、弯曲损耗、拼接损耗和偏振模色散。为了控制多孔光纤的色散和色散斜率，提出了一种新的色散控制技术，阐明了波长色散、限制损耗和有效面积之间的关系。基于多芯多孔光纤的光纤基光学器件如定向耦合器、波长滤波器和偏振分束器的新构造，3.对最近报道的低损耗光子带隙的色散和泄漏特性进行了研究，的间隙光纤进行了详细的研究，并发现，表面模式对这些性能有很大的影响。从我们的研究结果，它被证实，当表面模式存在它是很可能的，他们强烈修改的色散，泄漏损耗，和散射损耗的裸空芯模式。