Abstract
Researchers at UCF and the University of Texas at El Paso have designed and developed a device that can bend and steer data-carrying light beams through tighter turns and with higher efficiency than current technologies. The micron-scale, spatially variant photonic crystal (SVPC) enables extraordinary control of light and electromagnetic waves over very abrupt size scales; thus, companies can steer light through turns with a bending radius as much as 10 times the optical wavelength. The invention offers a way to build efficient, integrated photonics systems that can control optical beams in three dimensions while providing high data throughput.
Technical Details
The invention consists of a 3D lattice structure design, an algorithm for describing the fabrication of the lattice structure, and methods for fabricating the structure using multiphoton lithography. SVPCs can be fabricated from low-refractive-index media and commercially available photopolymer IP-DIP materials. With this technology, a manufacturer can create a spatially-variant lattice structure that can be graded or bent without deforming cells or losing electromagnetic properties. The invention enables the self-collimation effect, so that electromagnetic beams propagate along an axis of the lattice regardless of the beam's angle of incidence.
A single SVPC lattice can be used for two or more multiplexed optical functions, including (but not limited to) a curved optical path, a lens, a filter, a beam steerer, a multiplexer, a beam splitter, a beam combiner and a polarizer. An SVPC can also act as a photon funnel to concentrate or disperse light for energy harvesting, sensing, illumination, microscopy or endoscopy.
Benefit
Provides extraordinary control of light and electromagnetic waves over very abrupt size scalesEnables independent control of power and phase within the same volume of spaceAllows for switchable and tunable devicesMarket Application
Optical jumpers to connect semiconductor chips by light instead of electricity3D optical interconnectsEnergy harvesting, sensing, illumination, microscopy or endoscopyCompact imaging systems and compound lensesEncryptionPublications
Beam-bending in spatially variant photonic crystals at telecommunications wavelengths, Proc. SPIE 9759, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IX, 975911, March 14, 2016
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