Ultrahigh-Q TE/TM dual-polarized photonic crystal holey fishbone-like nanobeam cavities Chao-Sheng Deng, Ya-Song Gao, Xiao-Zan Wu, Ming-Jun Li and Jian-Xin Zhong EPL, 108 5 (2014) 54006 Published online: 05 December 2014 DOI: 10.1209/0295-5075/108/54006