Chinese Optics Letters, 2020, 18 (6): 060603, Published Online: May. 14, 2020  

All-optical inverter based on carbon nanotube-polyvinyl alcohol thin film Download: 735次

Author Affiliations
Shanghai Institute for Advanced Communication and Data Science, State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract
All-optical light control plays an important role in optical signal processing and communications. In this Letter, we demonstrate an all-optical inverter using carbon nanotube (CNT)-polyvinyl alcohol (PVA) thin film and obtain a long-time stable output due to the environmental insensitivity of the device. The thermo-optic effect in the CNT-PVA thin film generates a thermal lens and modifies the beam propagation in the thin film. The obtained all-optical inverter has a front (trailing) time constant of ~55 μs (44 μs) for 1550 nm signal pulses and ~7 kHz response bandwidth.

Zhengpeng Shao, Kan Wu, Jianping Chen. All-optical inverter based on carbon nanotube-polyvinyl alcohol thin film[J]. Chinese Optics Letters, 2020, 18(6): 060603.

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