公开(公告)号：US12007409B2

公开(公告)日：2024-06-11

申请号：US17487526

申请日：2021-09-28

Applicant: BAYLOR UNIVERSITY

Inventor： Zhenrong Zhang ,  Blake Birmingham ,  Khant Minn

IPC: G01Q60/22 ,  G01K3/14 ,  G02B6/02 ,  G02B6/10

CPC classification number: G01Q60/22 ,  G01K3/14 ,  G02B6/0229 ,  G02B6/102 ,  G02B6/105

Abstract: The invention offers high resolution and accuracy for nanoscale temperature mapping. Instead of collecting light after emission in near-field that decays to far-field, the present invention directly couples the near-field waves to a polaritonic-coated infrared probe. The polaritonic coating can be formed on an IR-tuned optical fiber to receive the coupled IR radiation and form polaritons, including plasmons or phonons, using the IR polaritonic material. The IR polaritons propagate along the probe decay back into the fiber core without substantial losses to far-field and are transmitted to a detector, such as a spectroscope. The coupling of the near-field energy to emission detected through the tip apex of fiber can be expressed as emission spectra. Through mapping with other spatial points, multi-dimensional displays and other information can be provided. The resolution can be less than 100 nanometers, such as at least an order of magnitude less than 100 nanometers.

公开(公告)号：US11933975B2

公开(公告)日：2024-03-19

申请号：US17677406

申请日：2022-02-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Babak Amirsolaimani ,  Pasi Saarikko ,  Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Scott Charles McEldowney

IPC: G02B27/00 ,  F21V8/00 ,  G02B6/10 ,  G02B6/27 ,  G02B6/35 ,  G02B6/42 ,  G02B23/12 ,  G02B27/01 ,  G06F3/01 ,  G06T7/70

CPC classification number: G02B27/0093 ,  G02B6/0056 ,  G02B6/105 ,  G02B6/27 ,  G02B6/356 ,  G02B6/42 ,  G02B6/4206 ,  G02B23/125 ,  G02B27/0172 ,  G06F3/013 ,  G06T7/70 ,  G02B2027/011 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.

公开(公告)号：US20240027680A1

公开(公告)日：2024-01-25

申请号：US18225002

申请日：2023-07-21

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Gregory Alan Cooksey ,  Paul Nathan Patrone ,  Matthew DiSalvo ,  Jalal Sadeghi

IPC: G02B6/10 ,  G02B6/42 ,  G02B27/28

CPC classification number: G02B6/105 ,  G02B6/4206 ,  G02B27/283

Abstract: A spatio-temporal profilometer performs time-resolved spatial profilometry and includes a substrate, a tapered optical collimator waveguide, a fluid channel, and a light-fluid interaction volume. The tapered optical collimator waveguide receives diverging light, internally reflects it, and collimates it. The fluid channel receives a fluid comprising microparticles and communicates the microparticles into the fluid channel. The light-fluid interaction volume is disposed in the fluid channel and provided by an overlap within the fluid channel of the collimated light from the tapered optical collimator waveguide and the fluid. The spatio-temporal profilometer produces product light from the collimated light in response to the microparticles interacting with the collimated light in the light-fluid interaction volume from which is determined a spatial and temporal profile of microparticles in the fluid channel.

公开(公告)号：US11846797B2

公开(公告)日：2023-12-19

申请号：US16862396

申请日：2020-04-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Brian Wheelwright ,  Ying Geng ,  Babak Amirsolaimani ,  Fenglin Peng

IPC: G02B6/10 ,  G02F1/13 ,  F21V8/00 ,  G02B5/30 ,  G02B27/01 ,  G02B27/00 ,  G02B27/14 ,  G02B27/28 ,  G02B6/12

CPC classification number: G02B6/0056 ,  G02B5/3025 ,  G02B6/0028 ,  G02B6/0031 ,  G02B6/105 ,  G02B27/0093 ,  G02B27/0172 ,  G02B27/145 ,  G02B27/283 ,  G02B6/0025 ,  G02B2006/12116 ,  G02B2027/0125 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02F1/1326

Abstract: An optical device includes an optical waveguide and a plurality of reflective polarizers. The plurality of reflective polarizers include a first reflective polarizer and a second reflective polarizer disposed inside the optical waveguide so that the first reflective polarizer receives light propagating inside the optical waveguide, redirects a first portion of the light in a first direction, and transmits a second portion of the light in a second direction non-parallel to the first direction. The second reflective polarizer receives the second portion of the light from the first reflective polarizer, redirects a third portion of the light, and transmits a fourth portion of the light. A ratio between the first portion and the second portion of the light has a first value and a ratio between the third portion and the fourth portion of the light has a second value distinct from the first value.

公开(公告)号：US20190086611A1

公开(公告)日：2019-03-21

申请号：US16011155

申请日：2018-06-18

Applicant: Lumentum Operations LLC

Inventor： Brian Daniel

IPC: G02B6/14 ,  G02B6/122 ,  G02B6/30 ,  G02B6/10

CPC classification number: G02B6/14 ,  G02B6/105 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/305 ,  G02B2006/12038 ,  G02B2006/12061

Abstract: A mode-converting optical coupler may include a secondary waveguide to guide light in one or more secondary optical modes, and a primary waveguide to guide light in one or more primary optical modes, each adiabatically coupled to a secondary optical mode of the secondary waveguide having a secondary mode index. Each primary optical mode of the primary waveguide may have a first primary mode index near a first end and a second primary mode index near a second end. The first primary mode index may be lower than the second primary mode index. The secondary mode index may be between the first primary mode index and the second primary mode index. The primary waveguide may include a plurality of silicon core structures including a central core structure arranged between a first neighboring core structure and a second neighboring core structure.

公开(公告)号：US20190052056A1

公开(公告)日：2019-02-14

申请号：US16035647

申请日：2018-07-15

Applicant: FUJITSU LIMITED

Inventor： Miki ONAKA

IPC: H01S5/125 ,  G02B27/14 ,  G02B5/30 ,  G02B6/10 ,  F21V8/00

CPC classification number: H01S5/125 ,  G02B5/3025 ,  G02B6/0006 ,  G02B6/105 ,  G02B6/4213 ,  G02B6/4246 ,  G02B27/14

Abstract: An optical module includes a light source; a demultiplexer configured to demultiplex a light into a transmission light and a local light; an optical modulator; an excitation light source; an optical waveguide substrate that includes: a polarization beam splitter configured to split a reception light into an X-polarized component and a Y-polarized component, a beam splitter, a pair of optical hybrid circuits configured to cause the X-polarized component and the Y-polarized component to interfere with the local light split by the beam splitter, a pair of local light waveguides configured to couple the beam splitter and the pair of optical hybrid circuits, a pair of reception light waveguides configured to couple the polarization beam splitter and the pair of optical hybrid circuits, wherein the pair of local light waveguides and the transmission light waveguide are doped with a rare-earth ion that amplifies a light when the excitation light is introduced.

公开(公告)号：US20180284563A1

公开(公告)日：2018-10-04

申请号：US15938684

申请日：2018-03-28

Applicant: The Charles Stark Draper Laboratory, Inc.

Inventor： Joseph J. Register ,  Dennis M. Callahan ,  Michael G. Moebius ,  Steven J. Byrnes ,  Gregg E. Favalora ,  Ian W. Frank

IPC: G02F1/335 ,  G02B27/22

CPC classification number: G02F1/335 ,  G02B6/0045 ,  G02B6/005 ,  G02B6/0078 ,  G02B6/105 ,  G02B6/12004 ,  G02B27/225 ,  G02B2006/0098 ,  G02B2006/12085 ,  G02B2006/12104 ,  G02B2006/12107 ,  G02F1/0353 ,  G02F1/125 ,  G02F2201/05 ,  G02F2201/18 ,  G02F2201/302 ,  G02F2201/34 ,  G02F2203/023 ,  G02F2203/07 ,  G02F2203/22 ,  G02F2203/24 ,  G02F2203/28 ,  G02F2203/58 ,  G03H1/02 ,  G03H1/2294 ,  G03H2001/0224 ,  G03H2001/2292 ,  G03H2223/16 ,  G03H2223/17 ,  G03H2225/11 ,  G03H2225/21 ,  G03H2225/34 ,  G03H2225/36 ,  G03H2225/55 ,  G10K11/002 ,  G10K11/178 ,  G10K11/17873 ,  G10K11/17875 ,  G10K11/36

Abstract: An electro-holographic light field generator device comprises surface acoustic wave (SAW) optical modulators arranged in different directions. Specifically, some embodiments have SAW modulators arranged in pairs, nose-to-nose with each other, and have output couplers that provide face-fire light emission. These SAW modulators also possibly include SAW sense transducers and/or viscoelastic surface material to reduce crosstalk.

公开(公告)号：US09939585B1

公开(公告)日：2018-04-10

申请号：US15606130

申请日：2017-05-26

Applicant: KVH Industries, Inc.

Inventor： Thomas D. Monte

IPC: G02B6/00 ,  G02B6/27 ,  H01Q21/24 ,  G02B6/10

CPC classification number: G02B6/2766 ,  G02B6/105 ,  G02B6/2726 ,  H01P1/065 ,  H01P1/161 ,  H01P1/17 ,  H01Q13/0241 ,  H01Q15/244 ,  H01Q21/245

Abstract: A waveguide device comprises a first circular waveguide segment (CWS) that imparts a 3λ/8 relative phase shift to two orthogonal linearly polarized signals, and a second CWS that imparts a λ/8 relative phase shift to two orthogonal linearly polarized signals. A waveguide assembly (WGA) comprises the first CWS disposed coaxially adjacent to the second CWS. A source may provide dual linear polarized energy into the WGA. In a first mode, the first CWS is axially orientated relative to the second CWS, such that the first CWS polarization is offset by 90° degrees with respect to the second CWS polarization. The radiation source polarization may be offset by 45° relative to the first CWS polarization and the second CWS polarization. In a second mode, the first CWS may be orientated with respect to the second CWS, such that the first CWS polarization and the second CWS polarization are substantially the same.

公开(公告)号：US20170299806A1

公开(公告)日：2017-10-19

申请号：US15489239

申请日：2017-04-17

Applicant: Chiral Photonics, Inc.

Inventor： Victor Il'ich Kopp

IPC: G02B6/02

CPC classification number: G02B6/02042 ,  G02B6/02085 ,  G02B6/105 ,  G02B6/14 ,  G02B6/24 ,  G02B6/36 ,  G02B6/4401 ,  G02B6/4403 ,  G02B6/4413 ,  G02B2006/0209

Abstract: The present disclosure provides a pitch reducing optical fiber array or a multicore fiber including at least one chiral fiber grating incorporated therein that is operable to couple the modes in different fiber cores within a spectral range determined in some instances by the helical pitch of the corresponding chiral fiber grating.

公开(公告)号：US20170269296A1

公开(公告)日：2017-09-21

申请号：US15615941

申请日：2017-06-07

Applicant: Oplink Communications, LLC

Inventor： Hongwei MAO ,  Zhongsheng WANG ,  Guijun JI ,  Jinyuan QIAO ,  Tian ZHU ,  Lifu GONG

IPC: G02B6/10 ,  G02F1/09 ,  G02B27/28 ,  G02B6/27

CPC classification number: G02B6/105 ,  G02B6/2746 ,  G02B6/32 ,  G02B27/285 ,  G02F1/093 ,  G02F2201/18 ,  G02F2203/06

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for optical communications. In one aspect, an optical circulator array includes a plurality of stacked three port circulators each having a respective first port of a first port array, a respective second port of a second port array, and a respective third port of a third port array. Each of the plurality of staked three port circulators share optical components including a first micro lens array optically coupled to the first port array and the third port array, a first walk off crystal, a first half wave plate, a first faraday rotator, a first birefringence wedge pair, a second birefringence wedge pair, a second Faraday rotator, a second half wave plate, a second birefringence walk off crystal, and a second micro lens array optically coupled to the second port array.