Ren Guobin, Gong Yandong, Shum Ping, Yu Xia, Hu JuanJuan, Wang Guanghui, Ong Ling Chuen Michael, Paulose Varghese
Network Technology Research Centre, Nanyang Technological University, Singapore.
Opt Express. 2008 Sep 1;16(18):13593-8. doi: 10.1364/oe.16.013593.
We propose a low-loss air-core polarization maintaining polymer fiber for terahertz (THz) wave guiding. The periodic arrangement of square holes with round corners in the cladding offers a bandgap effect for mode guiding. Numerical simulations show that the bandgap effect repels the modal power from the absorbent background polymers, resulting in a significant suppression of absorption loss of the polymers by a factor of more than 25. The phase-index birefringence of the proposed THz fiber is in the order of 10(-3).
我们提出了一种用于太赫兹（THz）波导的低损耗空芯保偏聚合物光纤。包层中带有圆角的方孔的周期性排列为模式引导提供了带隙效应。数值模拟表明，带隙效应将模式功率从吸收性背景聚合物中排斥出来，从而使聚合物的吸收损耗显著降低，降低因子超过25倍。所提出的太赫兹光纤的相折射率双折射约为10的 -3次方量级。
