Columbia University

Cornell University

Cold Spring Harbor Laboratory

Aseema Mohanty

Michal Lipson

Felippe Barbosa

Mohammad Amin Tadayon

Brian Stern

Jaime Cardenas

Christopher Thomas Phare

Christine P Hendon

Xingchen Ji

Xinwen Yao

You-Chia Chang

Samantha P Roberts

Oscar Adrian Jimenez Gordillo

Moshe Zadka

Min Chul Shin

Adam Kepecs

Qian Li

Kyle Watson

Provided are devices that have a distal portion configured to be implanted in a brain of a subject. The distal portion includes one or more emitters configured to emit light in the visible spectrum. The device includes a proximal portion configured to be external to the brain of the subject while the distal portion is implanted, wherein the proximal portion includes at least one waveguide in optical communication with the one or more emitters. The at least one waveguide defines a cross-sectional width less than 500 nm. The at least one waveguide is optionally coupled to a heating element that is optionally configured to adjust a phase of light within the at least one waveguide.

Thermally tunable low broadband waveguides and related systems and methods

Methods and systems are described for adjusting an optical signal. An example device can comprise a plurality of waveguides. The device can comprise an interference structure optically coupled to the plurality of waveguides and configured to receive an optical signal and distribute the optical signal to the plurality of waveguides as a plurality of optical signals. The device can comprise a plurality of phase shifters coupled to corresponding waveguides of the plurality of waveguides and configured to adjust the phase of one or more of the plurality of optical signals. The device can comprise a plurality of emitters optically coupled to corresponding outputs of the plurality of phase shifters and configured to output the adjusted plurality of optical signals. The adjusted plurality of optical signals can be output as light patterns reconfigurable in at least one dimension.

Chip-scale optical phased array for projecting visible light

A millimeter scale weak grating coupler comprising a silicon waveguide having bars of overlay material of length (a) disposed periodically at a period (&#x2227;) adjacent the silicon waveguide whereby a uniform grating output is achieved.

Millimeter scale long grating coupler

A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45&#xb0; angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.

Integrated micro-lens waveguide and methods of making and using same

An optical apparatus for coupling an optical fiber to a waveguide is disclosed. The optical apparatus can comprise a funnel coupler having an orifice configured to receive an optical fiber. The funnel coupler can mechanically support the optical fiber when received in the orifice. The funnel coupler can guide the optical fiber to a coupling end of the funnel coupler and a waveguide disposed adjacent the coupling end of the funnel coupler. One or more of the funnel coupler or the waveguide can be configured to optically couple the optical fiber and the waveguide when the optical fiber is received in the orifice.

3D funnel photonic structure for fiber to waveguide coupling

Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.

Photonic chips based on multimode fiber-to-waveguide coupling

Growing community of inventors

New York, NY, United States of America

Aseema Mohanty