{'fraction_non_alphanumeric': 0.04666666666666667, 'fraction_numerical': 0.030666666666666665, 'mean_word_length': 4.776923076923077, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 1, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Design of a DWDM Multi/Demultiplexer Based on 2-D Photonic Crystals

A multiplexer and demultiplexer (MUX/DEMUX) based on 2-D photonic crystals (PhCs) for a dense wavelength division multiplexing (DWDM) system is presented. The designed MUX/DEMUX consists of narrow bandpass filters and magneto-optical circulators based on 2-D PhCs with triangular lattice of air holes, the parameters of which are analyzed by a finite element method. The simulation results show that the frequencies 193.4, 193.3, and 193.2 THz could be multi/demultiplexed with a low insertion loss (<;0.5 dB) and large channel isolation (>18.4 dB). The proposed DWDM MUX/DEMUX could be used to provide transport solution for DWDM optical communication system with 100-GHz spacing.