北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (5): 33-36.doi: 10.13190/jbupt.201005.33.yuanjh

• 论文 • 上一篇    下一篇

双层芯色散补偿光子晶体光纤

苑金辉,桑新柱,余重秀,忻向军   

  1. 光通信与光电子学教育部重点实验室(北京邮电大学)
  • 收稿日期:2010-01-05 修回日期:2010-01-06 出版日期:2010-08-28 发布日期:2010-06-15
  • 通讯作者: 苑金辉 E-mail:yuanjinhui81@163.com

Dual Concentric Core Photonic Crystal Fiber for  Dispersion Compensation

  • Received:2010-01-05 Revised:2010-01-06 Online:2010-08-28 Published:2010-06-15

摘要:

为了抑制通信系统中脉冲的展宽,根据色散补偿理论,提出了一种由单一石英材料制成的双层芯光子晶体光纤(DCCPCF). 该光纤的色散值在155μm处可达到-6000ps/(nm〖DK〗•km). 理论分析表明,在传输过程中内芯基模和外芯缺陷模以相位匹配波长为临界状态,在内芯与外芯之间相互交替传输,并在匹配波长处因模式发生强烈耦合而引起折射率产生大幅度波动. 通过对结构参数d1、d2变化的情况下色散曲线的扰动情况进行分析,可为实际制备工作提供一定的理论指导.

关键词: 双层芯光子晶体光纤, 多极法, 内芯基模, 外芯缺陷模, 相位匹配波长

Abstract:

To restrain the pulse broadening in the communication system, a new type of dualconcentriccore photonic crystal fiber (DCCPCF) composed of single silica material is put forward based on the theory of dispersion compensation. The dispersion value of fundamental mode can achieve up to -6000ps/(nm〖DK〗•km) at 155μm. Analysis indicates that the inner core fundamental and outer core defect mode with phasematching wavelength (λp) as a critical state will propagate forward alternatively between the inner and outer core region, and the effective indices intensely appears fluctuations due to modes coupling at phasematching wavelength. By analyzing the perturbation of dispersion with two structure parameters d1, d2 changing, the instruction for actual fabrication at a certain extent is provided.

Key words: dualconcentriccore photonic crystal fiber, multipole method, inner core fundamental mode, oute r core defect mode, phasematching wavelength

中图分类号: