Photonic crystal-based permutation switch for optical networks. - Mehrdad Djavid; Mohammad Hadi Tavakoli Dastjerdi; Moab Rajan Philip; Dipayan Datta Choudhary; Thi Tan Pham; Abdallah Khreishah; Hieu Pham Trung Nguyen (Photonic Netw. Commun., 2018)