由于接续问题仍然是制约光子晶体光纤(PCF)广泛应用的主要因素之一，以两种自制PCF为例，对不同PCF之间的熔接进行了深入探讨与实验分析。基于一种高效的低损耗熔接方案，将理论计算与实验测量相结合，选取合理的熔接参量对光纤端面模场进行重塑，使两光纤端面模场匹配程度大大提高，从而实现了对称结构与非对称结构PCF之间、以及两种非对称结构PCF之间的低损耗、高强度的熔接。此外，着重分析了非对称结构PCF光纤端面旋转对熔接损耗的影响。结果表明，该影响在很大程度上取决于PCF的结构参量(孔距和孔径)。对给出的旋转非对称结构的PCF，其旋转对熔接损耗影响不大，无需保偏光纤熔接机即可实现高效低损耗接续。

Since the splicing problem is still a major limitation that hinders the widespread use of photonic crystal fiber (PCF), fusion splicing between PCF is throughly investigated in this paper. Two kinds of self-made PCF were used, and an effective fusion scheme was adopted to perform the splicing experiments. By combining experiments and numerical calculations, reasonable fusion parameters were set up and the mode fields at each fiber′s end face were rescaled. Thus, the mode matching was greatly improved and low-loss, high strength splices were implemented (1) between a rotational symmetric PCF and a rotational asymmetric PCF, and (2) between two rotational asymmetric PCF, respectively. Dependence of splice loss on fiber rotation was also analyzed, which turned out to be closely related to the structural parameters (hole pitch and diameter) of the PCF. For the given asymmetric PCF in this paper, polarization maintaining splicer was unnecessary for splicing since the rotational effect on splice loss was negligible. It was justified that PCF could be simply spliced together relying only on commercial electric-arc splicers.