A Novel Photonic Quasicrystal Fiber with Broadband Large Negative Dispersion

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2010,（11）
• 页码范围: 114-117
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/27/11/114211

摘要

A broadband highly dispersive fiber based on a dual-concentric-core photonic quasicrystal fiber(PQF)is designed for chromatic dispersion compensation.The fiber is composed of pure silica background and air-holes without doping.The fundamental supermode has a large negative dispersion value of about-9600 ps.nm-1.km-1 over an optical communication band around 1550nm and a full width at half maximum(FWHM)of 40nm.By adjusting the structural parameters,a dispersion of-2250ps·nm-1-.km-1 around 1550nm with the FWHM exceeding280nm is obtained and the dispersion-bandwidth product can reach 630 GHz-1·km-1,which is the highest value of dispersion-bandwidth product from pure silica fibers reported so far.