Observation of Third-order Nonlinearities in Graphene Oxide Film at Telecommunication Wavelengths

All-optical switches have been considered as a promising solution to overcome the fundamental speed limit of the current electronic switches. However, the lack of a suitable third-order nonlinear material greatly hinders the development of this technology. Here we report the observation of ultrahigh...

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Bibliographic Details
Published in:Scientific reports 2017-08, Vol.7 (1), p.9646-7, Article 9646
Main Authors: Xu, Xiaochuan, Zheng, Xiaorui, He, Feng, Wang, Zheng, Subbaraman, Harish, Wang, Yaguo, Jia, Baohua, Chen, Ray T.
Format: Article
Language:English
Subjects:
639/301/1019
639/624/399
Communication
Communications networks
Computer engineering
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Fourier transforms
Graphene
Humanities and Social Sciences
Lasers
Materials for optics
MATERIALS SCIENCE
multidisciplinary
Nonlinear systems
Optical materials and structures
Science
Science (multidisciplinary)
Silicon
Spectrum analysis
Thin films
Wavelengths
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Summary:All-optical switches have been considered as a promising solution to overcome the fundamental speed limit of the current electronic switches. However, the lack of a suitable third-order nonlinear material greatly hinders the development of this technology. Here we report the observation of ultrahigh third-order nonlinearity about 0.45 cm 2 /GW in graphene oxide thin films at the telecommunication wavelength region, which is four orders of magnitude higher than that of single crystalline silicon. Besides, graphene oxide is water soluble and thus easy to process due to the existence of oxygen containing groups. These unique properties can potentially significantly advance the performance of all-optical switches.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-09583-6