{'fraction_non_alphanumeric': 0.011848341232227487, 'fraction_numerical': 0.0, 'mean_word_length': 5.2592592592592595, '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}}
Quasi-Distributed Polarimetric Strain Sensor For Smart Skins Applications

A quasi-distributed polarimetric strain sensing system with minimized component count is described. The sensing fiber consisted of a number of discrete single mode optical fiber segments connected in series so that known backreflected energy was returned from the splice between each fiber segment. An rf ramped integrated optic Mach-Zehnder interferometer was used in the system in a bi-directional fashion as both a modulator and mixer. The beat signals produced in the mixing process were passed through an analyzer and detected by a low speed photodetector. Signal processing in the frequency domain then allowed the transverse strain on each fiber segment to be determined. A theoretical analysis of the technique is presented and compared to experimental results.