Octagonal dual-concentric-core photonic crystal fiber for C-band dispersion compensation with low confinement loss

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（z2）
• 页码范围: 30-32
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201311.S20604

摘要

A novel kind of octagonal dual-concentric-core photonic crystal fiber (PCF) is calculated with the finite element method (FEM) and proposed for broadband compensation.In order to realize highly negative dispersion,the hole diameter of the second ring is reduced relative to conventional PCFs.Numerical simulation results show that when the diameters of large holes and small holes are 0.77μm and 0.5 μm,respectively,and the pitch of the adjacent rings is 1.1 μm,the negative dispersion can achieve about-840 ps.nm-1.km-1 at 1 550 nm and the dispersion slope can match with single mode fiber (SMF-28) perfectly.This PCF can compensate the positive dispersion and also its slope of about 50 times its length of SMF-28 fiber,which is suitable for C-band optical fiber telecommunication as a dispersion compensation fiber.