光子晶体光纤(PCF)与普通单模光纤(SMF)的低损耗熔接技术是光子晶体光纤走向实用化必须解决的关键技术问题。提出一种基于光纤拉锥模场匹配技术的光子晶体光纤低损耗熔接的新方法，利用熔融拉锥机对模场不匹配的两类PCF进行预处理，结合常规电弧放电熔接技术对三种不同类型的PCF与SMF的熔接损耗进行实验研究。在实验中通过精确控制熔融拉锥机各种参数，实现了不同模场直径PCF和SMF的模场匹配，该方案同时通过优化各种电弧放电参数，使熔接后的损耗降到了0.3 dB以下,实现了PCF-SMF之间低损耗、高强度的熔接，满足了不同模场PCF实际应用的要求，具有很好的潜在应用价值。

The low-loss splicing technique between photonic crystal fibers (PCF) and normal single-mode fibers (SMF) is a critical problem that should be solved before the application of PCF. A new method to realize low loss splicing based on the new technique of mode field matching by fusion taper rig is proposed. The preprocessing that changes the mode-field diameter (MFD) is first done by fusion taper rig. Using traditional arc-fusion method combined with fusion taper rig, the experimental study on splicing loss between different PCF and SMF is performed. During the experiment, mode field matching between different PCF and SMF is observed by changing fusion taper rig′s parameters. The splicing loss can drop to below 0.3 dB by optimizing the discharge parameters, and then satisfy the application requirement. In return, the optimal sets of fusion splice parameters are determined and low-loss, high-strength splicing between the PCF and SMF is achieved. This method can provide the reference for other similar splicing between PCF and SMF.