Shi Peng, Zhou Guangya, Deng Jie, Tian Feng, Chau Fook Siong
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576.
Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602.
Sci Rep. 2015 Sep 29;5:14379. doi: 10.1038/srep14379.
We report the observations of all-optical electromagnetically induced transparency in nanostructures using waveguide side-coupled with photonic crystal nanobeam cavities, which has measured linewidths much narrower than individual resonances. The quality factor of transparency resonance can be 30 times larger than those of measured individual resonances. When the gap between cavity and waveguide is reduced to 10 nm, the bandwidth of destructive interference region can reach 10 nm while the width of transparency resonance is 0.3 nm. Subsequently, a comb-drive actuator is introduced to tune the line shape of the transparency resonance. The width of the peak is reduced to 15 pm and the resulting quality factor exceeds 10(5).
我们报道了在使用与光子晶体纳米束腔侧面耦合的波导的纳米结构中全光电磁诱导透明的观测结果，其测量的线宽比单个共振窄得多。透明共振的品质因数可比测量的单个共振的品质因数大30倍。当腔与波导之间的间隙减小到10纳米时，相消干涉区域的带宽可达到10纳米，而透明共振的宽度为0.3纳米。随后，引入了梳状驱动致动器来调谐透明共振的线形。峰值宽度减小到15皮米，所得品质因数超过10⁵ 。
