Graphene-GaAs-graphene stacked layers for the improvement of the transmission at the wavelength of 1.55 μm

• Published in: Optical materials 2016-07, Vol.57, p.120-124
• Main Authors: Ajlani, Hosni, Azizi, Mohamed Karim, Gharsallah, Ali, Oueslati, Meherzi
• Format: Article
• Language: English
• Subjects: Active control; Active devices; Adjustment; Air gaps; Chemical potential; Devices; Electronic devices; Graphene; Transmission; Wavelengths
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2016.04.031

Transmission filter operating at the wavelength of 1.55 μm and based on stacked graphene-GaAs-graphene layers separated by air gaps is presented. By using the transfer matrix method (TMM), we show that the addition of a graphene layer at each interface of a GaAs-based stratified structure, which initially exhibit only 30% transmission at 1.55 μm, allows the active control of the transmission by the adjustment of the graphene chemical potential. Transmission of almost 100% at the wavelength of 1.55 μm is achieved after addition of graphene layers. These results show the potential role of stacked graphene-GaAs-graphene layers in the development of new optical active communications devices. •GaAs-based transmission filter operating at the wavelength of 1.55 μm with only 30% transmission is presented.•Addition of a graphene layer at each interface allows the active control of the transmission.•Transmission of almost 100% at the wavelength of 1.55 μm is achieved in the vicinity of near zero epsilon graphene.•These results show the potential role of stacked graphene-GaAs-graphene layers in the development of optical active devices.