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中文摘要：
我们在场在指导索引的 photonic 水晶纤维(PCF ) 完成高 birefringence 和低监禁损失的一个系统的计划，用有在 cladding 区域的空气洞的有限数字的在结构上简单的 PCF。由在 cladding 区域增加最外面戒指的空气洞的尺寸，有低监禁损失的高度双折射的 PCF 能成功地被完成。设计策略基于 PCF 的形式的 birefringence 在 PCF 由 inner-ring 空气洞被统治的事实，它被一个完整向量的有限元素方法与各向异性的完美地匹配的层验证。数字结果在 10 的顺序显示出那形式的 birefringence ? 3 并且监禁损失不到 0.1 dB/km 能容易在 cladding 区域与仅仅空气洞的四枚戒指在建议 PCF 被认识到。我们期望如此的纤维将容易得多比有在 cladding 区域的更多的空气洞的那些是 fabvicated。
英文摘要：
We present a systematic scheme to achieve both high birefringence and low confinement loss in index-guiding photonic crystal fibers （PCFs）, using a structurally-simple PCF with finite number of air holes in the cladding region. By increasing the size of the outermost-ring air holes in the cladding region, highly birefringent PCFs with low confinement loss can be successfully achieved. The design strategy is based on the fact that the modal birefringence of PCFs is dominated by the inner-ring air holes in PCF, which is verified by a full-vector finite element method with anisotropic perfectly matched layers. Numerical results show that modal birefringence in the order of 10-3 and confinement loss less than 0.1 dB/km can be easily realized in the proposed PCF with only four rings of air holes in the cladding region. We expect that such fibers will be much easier to be fabvicated than those with more air holes in the cladding region.
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