Theoretical and Experimental Study on Optical Devices Using Highly Nonlinear Photonic Crystal Fibers

高非线性光子晶体光纤光学器件的理论与实验研究

• 批准号: 17360149
• 负责人: KOSHIBA Masanori
• 金额: $ 5.89万
• 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: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360149/
• 关键词: photonic crystal fiber; nonlinear optical fiber; nonlinear optical effect; fiber-type optical device; optical control device; optimum design; ファイバ形光ファイバ; ファイバ形光デバイス

The strong waveguide dispersion in photonic crystal fibers (PCFs) provides unique opportunities for nonlinear optics with a zero-dispersion wavelength far below the limit of~1.3μ m set by the material dispersion of silica. By tuning the air hole diameter, the pitch, and the number of rings of air holes, the strong waveguide dispersion can in principle be used to extend the zero-dispersion wavelength well into the visible, albeit to some extent at the cost of multi-mode operation. We developed an analysis software based on a full-vectorial finite element method and studied in detail the interplay of the zero-dispersion wavelength, the cutoff wavelength, and the leakage loss in the parameter space spanned by the hole diameter, the pitch, and the number of rings of air holes. As a particular result, we identified the values of hole diameter and pitch which facilitate the shortest possible zero-dispersion wavelength, while the fiber is still single-mode for longer wavelengths. In addition, the genetic algorithm integrated with the full-vectorial finite element method was used to optimize the structural parameters of dispersion compensating PCF (DCPCF) Raman amplifiers. The optimized DCPCF provided negative dispersion coefficient, negative dispersion slope, and broadband dispersion compensation over C-band or S-band with gain-flattened Raman characteristics. Furthermore, the Raman gain efficiency and chromatic dispersion of a hole-assisted fiber with and without minimum allowable bending radius were measured. Numerical predictions from the theory were shown to be in good agreement with the experimental results.

光子晶体纤维（PCFS）中强的波导分散体为非线性光学器件提供了独特的机会，其零分散波长远低于二氧化硅的材料分散体设置的〜1.3μm的极限。通过调整气孔直径，螺距和空气孔的环数，可以原理使用强波导分散体将零分散波长很好地扩展到可见度中，尽管在某种程度上以多模式操作为代价。我们开发了一个基于全矢量有限元方法的分析软件，并详细介绍了零分散波长的相互作用，截止波长以及由孔直径，螺距和空气孔的环数所跨越的参数空间中的泄漏损失。作为一个特别的结果，我们确定了孔直径和螺距的值，这些值促进了最短的零分散波长，而纤维仍然是单模的，对于更长的波长。此外，使用全矢量有限元方法集成的遗传算法用于优化分散补偿PCF（DCPCF）拉曼放大器的结构参数。优化的DCPCF提供了负分散系数，负分散斜率和具有增益触发拉曼特征的C波段或S波段的宽带分散补偿。此外，测量了带有和没有最小允许弯曲半径的孔辅助纤维的拉曼增益效率和镀铬分散。该理论的数值预测与实验结果非常吻合。

项目成果

Realization of single-moded broadband air-guiding photonic bandgap fibers

• DOI: 10.1109/lpt.2006.879546
• 发表时间: 2006-08
• 期刊: IEEE Photonics Technology Letters
• 影响因子: 2.6
• 作者: T. Murao;K. Saitoh;M. Koshiba

Design of narrow band-pass filters based on the resonant-tunneling phenomena in multi-core photonic crystal fibers

基于多芯光子晶体光纤谐振隧道现象的窄带通滤波器设计

• 发表时间: 2005
• 期刊: Optics Express 13・25
• 作者: N.J.Florous;K.Saitoh;S.K.Varshney;M.Koshiba;K.Saitoh;N.J.Florous;M.S.Alam;I.Enomori;Y.Tsuchida;K.Saitoh;M.Koshiba;N.J.Florous;M.Skorobogatiy;S.K.Varshney;K.Saitoh;K.Saitoh;S.K.Varshney;K.Saitoh
• 通讯作者: K.Saitoh

Chromatic dispersion profile optimization of dual-concentric-core photonic crystal fibers for broadband dispersion compensation.

• DOI: 10.1364/opex.14.000893
• 发表时间: 2006-01
• 期刊: Optics express
• 影响因子: 3.8
• 作者: T. Fujisawa;K. Saitoh;Keisuke Wada;M. Koshiba

Design and characterization of single-mode holey fibers with low bending losses

• DOI: 10.1364/opex.13.004770
• 发表时间: 2005-06-13
• 期刊: OPTICS EXPRESS
• 影响因子: 3.8
• 作者: Tsuchida, Y;Saitoh, K;Koshiba, M
• 通讯作者: Koshiba, M

Synthesis of polarization-independent splitters based on highly birefringent dual-core photonic crystal fiber platforms

• DOI: 10.1109/lpt.2006.875335
• 发表时间: 2006-06
• 期刊: IEEE Photonics Technology Letters
• 影响因子: 2.6
• 作者: N. Florous;K. Saitoh;M. Koshiba