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)

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Publisher's URL: http://dx.doi.org/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

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