{'fraction_non_alphanumeric': 0.03470715835140998, 'fraction_numerical': 0.008676789587852495, 'mean_word_length': 4.923076923076923, '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}}
Two-mode-interference switching in photonic crystal waveguides

A tunable photonic crystal switch based on two-mode-interference directional coupler is investigated. By modulating the central row of the rods of the coupler to change the real part of the refractive index, the bar-cross switch is obtained. Finite difference time-domain method (FDTD) is employed to predict the characterization of the switch, with crosstalk <-30 dB and extinction ratio > 30 dB.