A new type of THz photonic crystal fiber with super-flattened dispersion

作者：Jiang Yue Jin; Shi Wei Hua^*; Li Pei Li; Zhao Yan

来源：Acta Physica Sinica, 2010, 59(8): 5559-5563.

• THz-PCF
• finite-difference time-domain method
• super-flattened dispersion

A new type of THz photonic crystal fiber with super-flattened dispersion and air hole varying cladding is designed in this paper. Its dispersion properties are analyzed by using the finite-difference time-domain (FDTD) method. The results show that the new THz photonic crystal fiber is better than THz photonic crystal fiber with air hole unarying cladding in controlling the dispersion, and that the new THz photonic crystal fiber has the flattened dispersion when the third ring diameter has the same value as the forth ring diameter. When the air hole diameters are d(1) = 0.85d(4) , d(2) = 0.95d(4) ,d(3) = d(4) (d(1) ,d(2) ,d(3) ,d(4) are the diameters of air hole from the inter clad to the outer clad), the new THz photonic crystal fiber can have almost super-flattened dispersion at a level of -0. 1 +/- 0. 3 ps/(nm . km), a good ability to restrict the THz wave and a low loss in a wavelength reange between 60 mu m and 65 mu m.

• 出版日期2010-8
• 单位南京邮电大学