US 12,663,586 B2Granted

Electromagnetic waveguides using cascaded mode conversion

AssigneePresident and Fellows of Harvard College

InventorsVincent Ginis, Marco Piccardo, Michele Tamagnone, Federico Capasso

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Abstract

A device includes a first mode converter and a second mode converter that define a region between the first mode converter and the second mode converter. The region can contain a plurality of optical modes including at least three modes. The first mode converter and the second mode converter can generate a near-field via a conversion between the plurality of optical modes. The first mode converter can receive an input wave of a first mode and the second mode converter can generate an output wave of a second mode different from the first mode. The first mode converter and the second mode converter can generate a confined near-field via a conversion between the plurality of optical modes.

Claims10

Dependent claims

A device, comprising:

a first mode converter and a second mode converter that define a region between the first mode converter and the second mode converter, the region configured to contain a plurality of optical modes comprising at least three modes,
wherein the first mode converter and the second mode converter are configured to generate a near-field via a conversion between the plurality of optical modes, and
wherein:
the first mode converter and the second mode converter are configured to generate a near-field with a first profile, responsive to the first mode converter receiving a first input wave;
and
the first mode converter and the second mode converter are configured to generate a near-field with a second profile, responsive to the first mode converter receiving a second input wave;
and
the first mode converter or the second mode converter comprises a tunable mode converter.

5 more elements

Dependencies are inferred from the claim text.