Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China.
Opt Lett. 2010 Jan 1;35(1):88-90. doi: 10.1364/OL.35.000088.
We investigated experimentally and theoretically an invertible fiber-type transformation from a photonic bandgap fiber into a nonideal waveguide and then into an index-guiding photonic crystal fiber via the thermo-optic effect of the fluid filled in the air holes. Such a transformation could be used to develop an in-fiber optical switch/attenuator with a high-extinction ratio of more than 35 dB over an extremely broad wavelength range from 600 to 1700 nm via a small temperature adjustment.
我们通过填充在空气孔中的流体的热光效应，从光子带隙光纤实验和理论上研究了一种从非理想波导到折射率引导光子晶体光纤的可逆光纤型变换。通过小的温度调整，这种变换可以用于开发一种光纤光开关/衰减器，其在 600 到 1700nm 的极宽波长范围内具有超过 35dB 的高消光比。
