Characterization of light-control-light system using graphene oxide coated optical waveguide

Ahmad, Harith and Soltani, Soroush and Ismail, Mohammad Faizal and Thambiratnam, Kavintheran and Chong, Wu Yi and Yasin, Moh (2018) Characterization of light-control-light system using graphene oxide coated optical waveguide. Laser Physics, 28 (7). 076001. ISSN 1054-660X, DOI

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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.

Item Type: Article
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
Uncontrolled Keywords: GO-coated optical waveguide; graphene oxide; light-control-light characteristics; optical modulator; transmitted optical power
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Oct 2019 02:14
Last Modified: 07 Oct 2019 02:14

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