| 摘要 |
<p>A tunable optoelectronic device having a waveguide, the device comprising a grating defining a plurality of grating elements, arranged to provide scattering sites for radiation propagating within the waveguide; and a first graphene film provided for each grating element of a first set of said grating elements, said first set of grating elements including at least one of the plurality of grating elements; and a second graphene film provided for each grating element of a second set of said grating elements, said second set of grating elements including another at least one of the plurality of grating elements; wherein at least one of the first and second graphene films is independently controllable to alter the collective scattering effect of the first and second sets of grating elements on the radiation propagating in the waveguide thereby altering the output of the optoelectronic device.</p> |
