高双折射光纤的一个重要参数是拍长，由于拍长很短和周期性变化，如何实现准确测量是十分困难的。

One of the most important parameters about high birefringence fibers is the beat length. Because of its shortness and periodicity, measuring beat length is a critical one.

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另外，该结构高双折射光子晶体光纤在拉制工艺、光纤强度以及光纤熔接等方面也具有一定的优势。

Otherwise, it also has some advantages in the aspects of fiber drawing technique, fiber strength and fiber splicing.

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另外，该结构高双折射光子晶体光纤在拉制工艺、光纤强度以及光纤熔接等方面也具有一定的优势。

Otherwise, it also has some advantages in the aspects of fiber drawing technique, fiber strength and fiber splicing.

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