Analysis of Fresnel Loss at Splice Joint Between Single-Mode Fiber and Photonic Crystal Fiber

An analysis of Fresnel loss at splice joint of single-mode fiber (SMF) and two types of photonic crystal fibers (PCFs) using improved full-vectorial effective index methods is presented. The effects of air-hole size (d), air-hole spacing , longitudinal misalignment between spliced SMFs and PCFs on the Fresnel loss is analyzed and is shown that when and the dopant concentration in the core of PCFs increases or the ratio decreases, the Fresnel loss will decrease. The results of the analysis may be used by network designers to predict over all loss when employing PCF-based devices in optical fiber networks.