公开(公告)号：US12050345B2

公开(公告)日：2024-07-30

申请号：US17687068

申请日：2022-03-04

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Abu Thomas ,  Andrea Trita ,  Jeffrey Driscoll

IPC: G02B6/125 ,  G02B6/122 ,  G02B6/24 ,  G02B6/12

CPC classification number: G02B6/125 ,  G02B6/122 ,  G02B6/241 ,  G02B2006/12119

Abstract: A photonic integrated circuit. In some embodiments, the photonic integrated circuit includes: a waveguide; and a waveguide facet, a first end of the waveguide being at the waveguide facet, a first angle being an angle between: the waveguide at the first end of the waveguide and the normal to the waveguide facet, the first angle being at least 5 degrees, a first section of the waveguide having a first end at the waveguide facet and a second end, the first section having: a curvature of less than 0.01/mm at the first end of the first section, a curvature of less than 0.01/mm at the second end of the first section, and a curvature of at least 0.1/mm at a point between the first end and the second end.

公开(公告)号：US11835762B2

公开(公告)日：2023-12-05

申请号：US17687144

申请日：2022-03-04

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Abu Thomas ,  Andrea Trita ,  Jeffrey Driscoll

IPC: G02B6/125 ,  G02B6/12

CPC classification number: G02B6/125 ,  G02B2006/12109

Abstract: A waveguide mode filter. In some embodiments, the waveguide mode filter includes a first section of waveguide. The first section may have: a first end; a second end; a rate of change of curvature having a magnitude not exceeding 15/mm2 within the first section; a curvature having a magnitude of at most 0.03/mm at the first end; and a curvature having a magnitude of at least 0.1/mm at the second end.

公开(公告)号：US20200284985A1

公开(公告)日：2020-09-10

申请号：US16883862

申请日：2020-05-26

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Andrea Trita

IPC: G02B6/293 ,  G02B6/12

Abstract: A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port waveguide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to the second port waveguide, and a second optical path, different from the first optical path, from the first port waveguide to the second port waveguide. The first optical path has a portion, having a first length, within hydrogenated amorphous silicon. The second optical path has a portion, having a second length, within crystalline silicon, and the second optical path has either no portion within hydrogenated amorphous silicon, or a portion, having a third length, within hydrogenated amorphous silicon, the third length being less than the first length.

公开(公告)号：US11994715B2

公开(公告)日：2024-05-28

申请号：US17684265

申请日：2022-03-01

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Jin-Hyoung Lee ,  Andrea Trita

IPC: G02B6/122 ,  G02B6/125

CPC classification number: G02B6/1228 ,  G02B6/125

Abstract: A tapered waveguide. In some embodiments, the waveguide has a narrow end and a wide end. A taper angle of the waveguide may be, at each point along the waveguide, less than an adiabatic taper angle by a margin. The margin may be greater at a first point than at a second point, where the adiabatic taper angle is less at the first point than at the second point.

公开(公告)号：US11579365B2

公开(公告)日：2023-02-14

申请号：US17230864

申请日：2021-04-14

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Gerald Miller ,  Abu Thomas ,  Andrea Trita

IPC: G02B6/12 ,  G02B6/136

Abstract: A waveguide grating. The waveguide grating includes a rib composed of a first material. A first portion of the waveguide has a first layer on the rib, the first layer being composed of a second material; and a second layer on the first layer, the second layer being composed of a third material, the third material having a higher index of refraction than the first material.

公开(公告)号：US20210215881A1

公开(公告)日：2021-07-15

申请号：US17216538

申请日：2021-03-29

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Andrea Trita

IPC: G02B6/293 ,  G02B6/12

Abstract: A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port waveguide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to the second port waveguide, and a second optical path, different from the first optical path, from the first port waveguide to the second port waveguide. The first optical path has a portion, having a first length, within hydrogenated amorphous silicon. The second optical path has a portion, having a second length, within crystalline silicon, and the second optical path has either no portion within hydrogenated amorphous silicon, or a portion, having a third length, within hydrogenated amorphous silicon, the third length being less than the first length.

公开(公告)号：US10955613B2

公开(公告)日：2021-03-23

申请号：US16523987

申请日：2019-07-26

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Andrea Trita

IPC: G02B6/12

Abstract: An arrayed waveguide grating. The arrayed waveguide grating includes two star couplers and an array of waveguides connecting the star couplers. The T-shaped geometry of the array of waveguides makes possible an AWG with an arbitrarily large free spectral range in a compact form factor. An array mode converter produces a field pattern, at an aperture of a free propagation region of a star coupler, having overlapping modes from adjacent waveguides.

公开(公告)号：US20200371291A1

公开(公告)日：2020-11-26

申请号：US16986076

申请日：2020-08-05

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Andrea Trita

IPC: G02B6/293 ,  G02B6/12

Abstract: A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port waveguide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to the second port waveguide, and a second optical path, different from the first optical path, from the first port waveguide to the second port waveguide. The first optical path has a portion, having a first length, within hydrogenated amorphous silicon. The second optical path has a portion, having a second length, within crystalline silicon, and the second optical path has either no portion within hydrogenated amorphous silicon, or a portion, having a third length, within hydrogenated amorphous silicon, the third length being less than the first length.

公开(公告)号：US11733461B2

公开(公告)日：2023-08-22

申请号：US17216538

申请日：2021-03-29

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Andrea Trita

IPC: G02B6/293 ,  G02B6/12

CPC classification number: G02B6/29355 ,  G02B6/12007 ,  G02B6/12028 ,  G02B6/29301 ,  G02B6/29311 ,  G02B6/29395 ,  G02B6/12011 ,  G02B6/12014 ,  G02B6/29398 ,  G02B2006/12061

Abstract: A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port waveguide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to the second port waveguide, and a second optical path, different from the first optical path, from the first port waveguide to the second port waveguide. The first optical path has a portion, having a first length, within hydrogenated amorphous silicon. The second optical path has a portion, having a second length, within crystalline silicon, and the second optical path has either no portion within hydrogenated amorphous silicon, or a portion, having a third length, within hydrogenated amorphous silicon, the third length being less than the first length.

公开(公告)号：US11681167B2

公开(公告)日：2023-06-20

申请号：US17349835

申请日：2021-06-16

Applicant: ROCKLEY PHOTONICS LIMITED

Inventor： Abu Thomas ,  Albert Benzoni ,  Jacob Levy ,  Thomas Pierre Schrans ,  Andrea Trita ,  Guomin Yu ,  Aaron John Zilkie

IPC: G02F1/01 ,  G02F1/017 ,  H01S5/00 ,  H01S5/026 ,  H01S5/10 ,  G02F1/025 ,  G02B6/12 ,  H01S5/343 ,  H01S5/12 ,  H01S5/50 ,  H01S5/227 ,  G02F1/015

CPC classification number: G02F1/01708 ,  G02B6/12004 ,  G02F1/025 ,  H01S5/0085 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/101 ,  G02F1/0157 ,  G02F2202/102 ,  G02F2203/70 ,  H01S5/12 ,  H01S5/227 ,  H01S5/34306 ,  H01S5/50

Abstract: A photonic chip. In some embodiments, the photonic chip includes a waveguide; and an optically active device comprising a portion of the waveguide. The waveguide may have a first end at a first edge of the photonic chip; and a second end, and the waveguide may have, everywhere between the first end and the second end, a rate of change of curvature having a magnitude not exceeding 2,000/mm2.