{'fraction_non_alphanumeric': 0.025435073627844713, 'fraction_numerical': 0.013386880856760375, 'mean_word_length': 4.709923664122138, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, '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}}
Notch/bandpass Microwave Photonic Filter Based on a Microring Resonator and a LiNbO3 Phase Modulator

A notch/bandpass microwave photonic filter (MPF) with tunable frequency based on a microring resonator (MRR) and a LiNbO3 phase modulator is proposed and experimentally demonstrated. By adjusting the polarization controller (PC) between the PM and the MRR, the MPF can switch between a bandpass filter and a notch filter. The frequency of the MPF can be tuned by changing the wavelength spacing between the optical carrier and the resonator wavelength of the MMR. A proof-of-concept experiment is carried out. The notch/bandpass filter with a rejection ratio of 27 dB/15 dB can be achieved during a frequency tuning range from 9 GHz to 18.5 GHz.