Projects per year
We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America
FingerprintDive into the research topics of 'Slot-grating flat lens for telecom wavelengths'. Together they form a unique fingerprint.
- Department of Electrical & Electronic Engineering - Professor of Applied Electromagnetics and Photonics
- Cabot Institute for the Environment
- The Bristol Centre for Nanoscience and Quantum Information
- Communication Systems and Networks
Person: Academic , Member