Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449552 | Optics Communications | 2017 | 7 Pages |
Abstract
A tunable slow light with low group velocity, high buffer performance and high sensitivity is realized in photonic crystal coupled resonator optical waveguide (PC-CROW) with elliptical rod around cavity. By adjusting the long axis and short axis of the elliptical rods, the slow light and buffer performance of PC-CROW are optimized. As ae=0.42a, be=0.20a, the group velocity is below 2.3053Ã10â4c, simultaneously, the buffer capacity C and delay time Ts reach the optimum value of 9.8214Â bit and 354.8Â ps. Then the dynamic modulation of the slow light and buffer performance based on this optimized structure has been discussed systematically. Thanks to the electro-optic effect of the polystyrene substrate, the guided mode shifts linearly to short wavelength in sensitivity of 3.0Â nm/mV around 1550Â nm, as the applied voltage increases. The modulation sensitivities of delay time and buffer capacity are 0.445Â ns/mV and 0.051Â bit/mV, respectively. These results show a considerable potential for this structure that can be dynamically controlled according to the practical requirements by electro-optic effect in PC-CROW.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Changhong Li, Yong Wan, Weihua Zong,