Optical device and a method of forming an optical device
AssigneeRoyal Melbourne Institute of Technology
InventorsBaohau Jia, Han Lin
Life of this patent
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Abstract
Described herein is an optical device that is arranged to emit electromagnetic radiation and a method of forming an optical device. In one embodiment, the optical device comprises an optical fibre that is arranged to transmit electromagnetic radiation between a source of electromagnetic radiation and an area of interest of a sample material. The optical device also comprises an optical element coupled to an end portion of the optical fibre. The optical element comprises a graphene lens that is arranged to focus the electromagnetic radiation transmitted by the optical fibre to a focal region within the area of interest of the sample material.
Claims21
An optical device that is arranged to emit electromagnetic radiation, the optical device comprising:
- an optical fibre that is arranged to transmit electromagnetic radiation between a source of electromagnetic radiation and an area of interest of a sample material;
- and
- an optical element formed directly on an end-portion of the optical fibre, the optical element comprising a graphene lens having a plurality of concentric rings disposed over a core of the optical fibre and having radii determined based on electric field modes of the optical fibre, wherein the graphene lens has a diameter that is substantially matched with a diameter of the optical fibre core, and that is arranged to focus the electromagnetic radiation transmitted by the optical fibre to a focal region within the area of interest of the sample material.
A method of forming an optical device that is arranged to emit electromagnetic radiation, the method comprising:
- providing an optical fibre for transmitting electromagnetic radiation between a source of electromagnetic radiation and an area of interest of a sample material;
- and
- forming an optical element comprising a graphene lens directly on an end portion of the optical fibre in a manner such that, in use, electromagnetic radiation transmitted by the optical fibre through the graphene lens is focused to a focal region within the area of interest of the sample material;
- wherein the graphene lens has a plurality of concentric rings disposed over a core of the optical fibre and having radii determined based on electric field modes of the optical fibre, wherein the graphene lens has a diameter that is substantially matched with a diameter of the optical fibre core
- wherein the graphene lens has a diameter that is substantially matched with a diameter of the optical fibre core, and wherein the graphene lens.
Dependencies are inferred from the claim text.