{'fraction_non_alphanumeric': 0.03146853146853147, 'fraction_numerical': 0.0, 'mean_word_length': 5.095744680851064, '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}}
Analysis of four-wave mixing in dispersion-managed transmission lines

We investigate the four-wave mixing (FWM) effect in a dispersion-managed transmission line. The dispersion-managed line consists of many repeated fiber spans, each of which includes a positive- and a negative-dispersion fiber. The analytical expression of the FWM is obtained. The influence of the channel spacing, the fiber spans’ number and the compensating dispersion parameter on the FWM effect is analysed. The dispersion-managed transmission line is optimized to depress the generated FWM noise.