dc.contributor.author | Liu, Jiamin | |
dc.contributor.author | Liu, Yangjié | |
dc.date.accessioned | 2018-10-23T12:24:13Z | |
dc.date.issued | 2018-11-15 | en_US |
dc.date.submitted | 2018-10-22T11:16:55.106Z | |
dc.identifier.issn | 0030-4018 | en_US |
dc.identifier.other | 10.1016/j.optcom.2018.07.009 | |
dc.identifier.uri | http://qmro.qmul.ac.uk/xmlui/handle/123456789/48025 | |
dc.description.abstract | © 2018 Elsevier B.V. A theoretical investigation of a suspended self-biasing graphene waveguide for electro-optical modulators is presented. The light–matter interaction can be enhanced by suspending the waveguide. For electro-absorptive modulation, the normalized modulation depth can be 0.54 dB/μm with a 3-dB footprint of only 1.5 μm2. The insertion loss is extremely low ∼ 0.002 dB, with the figure of merit of ∼ 2700. For the electro-refractive modulation, a 100% modulation can be achieved with much smaller π-phase shift length of only 18.0 μm. The modulators also show great potential for high-speed (∼ 559.2 GHz) modulation. The compromise between modulation speed and modulation efficiency is reduced significantly and the design is near-optimal to its fundamental limits. Moreover, a verification simulation by COMSOL is also given. This suspended graphene modulator can pave the way to practical high-speed, compact-footprint, and high-efficiency devices. | en_US |
dc.description.sponsorship | The authors would like to acknowledge financial supports from theEngineering and Physical Sciences Research Council (EPSRC) on Grant‘‘Graphene Flexible Electronics and Optoelectronics’’ (EP/K01711X/1)and the EU Graphene Flagship (FP7-ICT-604391) | en_US |
dc.format.extent | 439 - 446 | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Optics Communications | en_US |
dc.rights | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.title | Ultrafast suspended self-biasing graphene modulator with ultrahigh figure of merit | en_US |
dc.type | Article | |
dc.rights.holder | Elsevier BV | |
dc.identifier.doi | 10.1016/j.optcom.2018.07.009 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
pubs.volume | 427 | en_US |