Chromatic dispersion profile optimization of dual-concentric-core photonic crystal fibers for broadband dispersion compensation.
Chromatic dispersion profile optimization of dual-concentric-core photonic crystal fibers for broadband dispersion compensation.
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DOI：
10.1364/opex.14.000893
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发表时间：
2006-01
期刊：
影响因子：
3.8
通讯作者：
T. Fujisawa;K. Saitoh;Keisuke Wada;M. Koshiba
中科院分区：
文献类型：
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作者：
T. Fujisawa;K. Saitoh;Keisuke Wada;M. Koshiba
采用遗传算法结合全矢量有限元法对双同心芯光子晶体光纤的色散特性进行优化，以实现单模光纤的宽带色散补偿。数值结果表明，增大中心纤芯与外环纤芯之间的距离，可以获得更大的负色散系数和更好的色散斜率补偿。由于双同心芯光子晶体光纤的凹面色散特性，需要在负色散系数和色散斜率补偿之间进行权衡。尽管有折衷，双同心芯光子晶体光纤具有较大的负色散系数，以及补偿色散斜率的SMF在整个C波段具有大的有效面积可以设计。
Chromatic dispersion profile of dual-concentric-core photonic crystal fibers is optimized for broadband dispersion compensation of single mode fibers (SMFs) by using genetic algorithm incorporated with full-vector finite-element method. From the numerical results presented here, it is found that by increasing the distance between central core and outer ring core, larger negative dispersion coefficient and better dispersion slope compensation are possible. There is a tradeoff between the magnitude of negative dispersion coefficient and dispersion slope compensation due to the concave dispersion profile of dual-concentric-core photonic crystal fibers. In spite of the tradeoff, dual-concentric-core photonic crystal fibers having larger negative dispersion coefficient as well as compensating for dispersion slope of SMFs in the entire C band with large effective area can be designed.