{'fraction_non_alphanumeric': 0.024822695035460994, 'fraction_numerical': 0.005319148936170213, 'mean_word_length': 5.726190476190476, '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}}
Ultra-Wideband Transmission Systems Based on Semiconductor Optical Amplifiers

Extending the bandwidth of optical amplifiers is a promising approach to increase the throughput of wavelength division multiplexed (WDM) systems. We review recent ultra-wideband (UWB) experiments and discuss the interest of using UWB semiconductor optical amplifiers (SOA) for future transmission systems. We report on UWB SOA characteristics and discuss recent results of a 300 km transmission experiment over standard single mode fiber (SSMF), using a hybrid Raman and SOA repeater.