Suspended graphene double-layer modulator with an ultrahigh figure of merit and a subwavelength-thickness modulator with leaky mode | Zendy

Jiamin Liu | Zendy; Zia Ullah Khan | Zendy; Siamak Sarjoghian | Zendy

Open Access

Suspended graphene double-layer modulator with an ultrahigh figure of merit and a subwavelength-thickness modulator with leaky mode

Author(s) -

Jiamin Liu,

Zia Ullah Khan,

Siamak Sarjoghian

Publication year - 2019

Publication title -

applied optics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.668

H-Index - 197

eISSN - 2155-3165

pISSN - 1559-128X

DOI - 10.1364/ao.58.003729

Subject(s) - figure of merit , electro optic modulator , optics , modulation (music) , optical modulator , graphene , materials science , insertion loss , optoelectronics , physics , phase modulation , nanotechnology , phase noise , acoustics

A comparison between a graphene suspended double-layer modulator and a subwavelength-thickness modulator is presented. The physics of both are analyzed in detail and show a confined mode in the suspended modulator but a leaky mode in the subwavelength modulator. The leaky mode shows zero light-matter interaction and zero modulation depth, which should be avoided in designing a modulator. The suspended modulator can achieve much lower insertion loss and an extraordinarily higher figure of merit (∼2480) than the subwavelength modulator. Both operate with high modulation efficiency and comparable modulation speeds. We believe these designs will pave the way to realizing high-efficiency, near-fundamental-limit graphene modulators.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research