{'fraction_non_alphanumeric': 0.02276176024279211, 'fraction_numerical': 0.006069802731411229, 'mean_word_length': 5.226415094339623, '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}}
High-power neodymium soliton fiber laser that uses a chirped fiber grating.

The use of a highly chirped fiber Bragg grating for dispersion compensation in a self-starting passively mode-locked neodymium soliton fiber laser is demonstrated for the first time to our knowledge. By employing an appropriately designed saturable absorber as the mode-locking element and limiting polarization-dependent loss in the cavity, we obtain polarization-insensitive operation of the laser, and no intracavity polarization controllers are required for its optimization. The laser generated bandwidth-limited pulses of 6-ps duration with output energies as high as 1.25 nJ.