University of Michigan

Steve Young

Anthony Grbic

Justin Foley

Jamie D Phillips

A narrowband transmission system includes a dielectric grating that defines a surface and includes a plurality of longitudinal members arranged along an axis. The longitudinal members are surrounded by a medium. The longitudinal members are made of a material that has an index of refraction that is greater than an index of refraction of the medium. The dielectric grating is configured to receive radiation at the surface. The system further includes a means for breaking a symmetry between the radiation and the dielectric grating such that the dielectric grating transmits a given wavelength band of the radiation through the dielectric grating while rejecting remainder of wavelengths embodied in the radiation.

Narrowband transmission filter

A near-field plate is a non-periodically patterned surface that can overcome the diffraction limit and confine electromagnetic fields to subwavelength dimensions. By controlling the interference of the electromagnetic fields radiated by the near-field plate with that of a source, the near-field plate can form a subwavelength near-field pattern in a forward direction, while suppressing fields in other directions, such as those reflected. The resulting unidirectional near-field plate may find utility in many applications such as high resolution imaging and probing, high density data storage, biomedical targeting devices, and wireless power transfer.

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Ann Arbor, MI, United States of America

Steve Young