公开(公告)号：US11385410B2

公开(公告)日：2022-07-12

申请号：US16626598

申请日：2018-06-26

申请人： The Trustees of Columbia University in the City of New York

发明人： Michal Lipson ,  Aseema Mohanty ,  Christopher T. Phare ,  Moshe Zadka ,  Samantha P. Roberts ,  You-Chia Chang

IPC分类号： G02B6/28 ,  G02B6/124 ,  G02B6/136 ,  G02B6/12

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

公开(公告)号：US11256031B2

公开(公告)日：2022-02-22

申请号：US16626616

申请日：2018-06-26

申请人： The Trustees of Columbia University in the City of New York

发明人： Michal Lipson ,  You-Chia Chang ,  Samantha P. Roberts ,  Brian Stern ,  Utsav D. Dave

IPC分类号： G02B6/14 ,  F21V8/00 ,  G02F1/01 ,  G02F1/295

摘要： Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.

公开(公告)号：US20200225413A1

公开(公告)日：2020-07-16

申请号：US15883367

申请日：2018-01-30

申请人： The Trustees of Columbia University in the City of New York

发明人： Michal Lipson ,  You-Chia Chang ,  Oscar Adrian Jimenez Gordillo ,  Mohammad Amin Tadayon ,  Brian Stern

IPC分类号： G02B6/122

摘要： An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.

公开(公告)号：US11984665B2

公开(公告)日：2024-05-14

申请号：US17275753

申请日：2019-09-13

申请人： The Trustees of Columbia University in the City of New York

发明人： Michal Lipson ,  Christoper Thomas Phare ,  You-Chia Chang ,  Steven A. Miller

IPC分类号： H01Q3/38 ,  G01S17/10 ,  G01S17/42 ,  G01S17/89 ,  H01Q3/40

CPC分类号： H01Q3/38 ,  G01S17/10 ,  G01S17/42 ,  G01S17/89 ,  H01Q3/40

摘要： An optical apparatus comprising an optical switch array comprising a plurality of optical switches configured to selectively route light through one or more of a plurality of waveguides, a plurality of emitters, wherein at least one emitter of the plurality of emitters is disposed in communication with the one or more of the plurality of waveguides and configured to receive light and cause at least a portion of the light to exit the waveguide, and a lens disposed to receive light exiting the one or more of a plurality of waveguides via the at least one emitter, wherein the lens is configured to direct the received light as an optical output, and wherein the position of the at least one emitter relative to the lens facilitates beam steering of the optical output.

公开(公告)号：US10746935B2

公开(公告)日：2020-08-18

申请号：US15883367

申请日：2018-01-30

申请人： The Trustees of Columbia University in the City of New York

发明人： Michal Lipson ,  You-Chia Chang ,  Oscar Adrian Jimenez Gordillo ,  Mohammad Amin Tadayon ,  Brian Stern

IPC分类号： G02B6/122 ,  G02B6/30

摘要： An optical coupling apparatus comprising a substrate having a trench formed therein, the trench having a width measured between two opposing walls that define a portion of the trench; and a waveguide disposed on or in the substrate, the waveguide having a width that tapers along an axis of light propagation.