{'fraction_non_alphanumeric': 0.02544769085768143, 'fraction_numerical': 0.016965127238454288, 'mean_word_length': 4.679144385026738, '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}}
Optical fiber switch using a draw-bridge mirror for large array of interconnects

This paper reports the design, fabrication and test of a monolithically-integrated 4 X 4 free-space optical crossconnect using microfabricated polysilicon 3D-mirror to enable light-path switching for optical communication applications. The switch consists of 16 pairs of three- dimensional movable mirrors and draw-bride plate actuators, and four input and output fiber-optic guiding rails. The draw- bridge plates actuated by the electrostatic force drive the 3D-mirrors up and down to cut off the light beam or to let the light beam pass through. The optical crossconnect is fabricated using three-layer-polysilicon surface micromachining technology. The size of the whole structures is 5 mm X 5 mm . The maximum driving voltage is about 45 V, and its resonant frequency is about 5 KHz (200 micrometer switch time). The optical insertion loss of about 1.5 dB and the crosstalk of less than -60 dB have been obtained while using GRIN-lens to collimate the input optical signals.