Characterization of light-control-light system using graphene oxide coated optical waveguide
Document Type
Article
Publication Date
1-1-2018
Abstract
An optical waveguide was coated with graphene oxide (GO) using the drop-casting technique to increase the interaction between the waveguide's evanescent field and the GO layer. Subsequently, a 1550 nm tunable laser source and 980 nm pump laser is used to study the potential of the GO-film to control the flow of light through the waveguide by altering the state of the waveguide between transparent (ON) and opaque (OFF). The GO layer has a thickness of 0.40 μm and allows a 1550 nm signal with a peak power of -7.0 dBm and average output power of 0 dBm to pass through at a maximum pump power of 60 mW. The waveguide has a responsivity of ∼0.1 dB mW-1, with the time to switch between the ON and OFF states being about 3 ms.
Keywords
GO-coated optical waveguide, graphene oxide, light-control-light characteristics, optical modulator, transmitted optical power
Divisions
photonics
Funders
Ministry of Higher Education, (Malaysia) under the grant LRGS (2015)/NGOD/UM/KPT,University of Malaya under the grants RU 001–2017 and RP 029A—15 AFR
Publication Title
Laser Physics
Volume
28
Issue
7
Publisher
IOP Publishing