{'fraction_non_alphanumeric': 0.022108843537414966, 'fraction_numerical': 0.0, 'mean_word_length': 4.8316831683168315, '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}}
Mode-locked parabolic Raman fiber oscillator

The generation of self-similar parabolic pulses (similaritons) has so far only been obtained in single-pass Raman amplifier configurations or in rare-earth doped fiber lasers. We report here the first demonstration of a mode-locked parabolic pulse fiber laser, which can potentially be run at any wavelength using Raman gain. This new all-fiber ring similariton laser scheme has been designed with the aid of a full theoretical model of its operation. The output similariton pulses of the laser have a true parabolic shape and a linear chirp.