Graphene oxide multilayer structures for polarisation selection and other functionalities in planar waveguide based integrated photonics

De La Rue, R.M. , Lim, W.H., Yap, Y.K., Chong, W.Y., Pua, C.H., Huang, N. M. and Ahmad, H. (2014) Graphene oxide multilayer structures for polarisation selection and other functionalities in planar waveguide based integrated photonics. In: 2014 16th International Conference on Transparent Optical Networks (ICTON), Graz, Austria, 6-10 Jul 2014, pp. 1-3. (doi: 10.1109/ICTON.2014.6876445)

Abstract

We have demonstrated a waveguide polariser with high extinction ratio on a polymer optical waveguide coated with multi-layer graphene oxide `paper'. Coating was carried out using the drop-casting technique and a concentrated solution of graphene oxide flakes. For an appropriate thickness of graphene oxide, an extinction ratio of approaching 40 dB was measured at 1590 nm, with a variation of only 4.5 dB across the wavelength range from 1530 nm to 1630 nm. This result was achieved for a coated region propagation length of approximately one millimetre. The strongly polarisation dependent propagation loss demonstrated is attributable to the anisotropy of the complex refractive index of graphene oxide paper.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: De La Rue, Professor Richard
• Authors: De La Rue, R.M., Lim, W.H., Yap, Y.K., Chong, W.Y., Pua, C.H., Huang, N. M., and Ahmad, H.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering