公开(公告)号：US20230258964A1

公开(公告)日：2023-08-17

申请号：US18011676

申请日：2021-06-23

Applicant: The University of Bristol

Inventor： Jorge Barreto ,  Gerardo Villarreal Garcia ,  Benjamin Burridge ,  Antonio Gentile

IPC: G02F1/01

CPC classification number: G02F1/0147 ,  G02F1/011 ,  G02F2201/06

Abstract: There is presented an apparatus for controlling an optical mode propagating within an optical waveguide assembly. The optical waveguide assembly comprising at least a waveguide core material for guiding the optical mode and being in an environment comprising a substance. The apparatus comprises a processor configured to transmit one or more control signals to at least one energy emitter to reversibly change at least a portion of the substance in contact with a portion of the waveguide assembly in a localised area of the waveguide assembly, from a first state of matter to a second different state of matter. The change of state of matter changing a characteristic of the optical mode. The processor further receives a sensor signal from a sensor monitoring the optical mode. Also presented are methods associated with the apparatus and methods for controlling a characteristic of an optical mode.

公开(公告)号：US20190162988A1

公开(公告)日：2019-05-30

申请号：US16267545

申请日：2019-02-05

Applicant: Luxtera, Inc.

Inventor： Ali Ayazi ,  Gianlorenzo Masini ,  Subal Sahni ,  Attila Mekis ,  Thierry Pinguet

IPC: G02F1/025 ,  G02F1/225

CPC classification number: G02F1/025 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/06 ,  G02F2202/105

Abstract: Methods and systems for a low-parasitic silicon high-speed phase modulator are disclosed and may include in an optical phase modulator that comprises a PN junction waveguide formed in a silicon layer, wherein the silicon layer may be on an oxide layer and the oxide layer may be on a silicon substrate. The PN junction waveguide may have fingers of p-doped and n-doped regions on opposite sides along a length of the PN junction waveguide. Contacts may be formed on the fingers of p-doped and n-doped regions. The fingers of p-doped and n-doped regions may be arranged symmetrically about the PN junction waveguide or staggered along the length of the PN junction waveguide. Etch transition features may be removed along the p-doped and n-doped regions.

公开(公告)号：US20180284493A1

公开(公告)日：2018-10-04

申请号：US15476313

申请日：2017-03-31

Applicant: Jia Jiang

Inventor： Jia Jiang

IPC: G02F1/025 ,  G02F1/225

CPC classification number: G02F1/025 ,  G02F1/009 ,  G02F1/2257 ,  G02F2001/0156 ,  G02F2001/212 ,  G02F2201/06

Abstract: A phase shifting optical device and method of manufacture is provided. In an embodiment, the phase shifting optical device may include a first arm defining a first arm optical path, a second arm defining a second arm optical path, a beam splitter for splitting an input optical beam into first and second sub-beams for propagating in the first and second arm optical paths, respectively, and a beam combiner for combining the first and second sub-beams propagated in the first and second arm optical paths, respectively, into an output optical beam. The first arm including a carrier modification element to induce a phase shift in the first arm optical path relative to the second arm optical path. A cladding may be provided proximate to the first arm, the cladding having a temperature coefficient of refractive index (dn/dT)cl opposite in sign to a temperature coefficient of refractive index (dn/dT)a of the first arm.

公开(公告)号：US09991966B1

公开(公告)日：2018-06-05

申请号：US15400483

申请日：2017-01-06

Applicant: Dritan Celo ,  Lukas Chrostowski ,  Eric Bernier ,  Yun Wang

Inventor： Dritan Celo ,  Lukas Chrostowski ,  Eric Bernier ,  Yun Wang

IPC: H03M1/00 ,  H04B10/54 ,  G02B6/293 ,  G02F1/01

CPC classification number: G02F1/011 ,  G02B6/29343 ,  G02F2001/0113 ,  G02F2201/06 ,  G02F2203/15 ,  H04B10/2575 ,  H04B10/524

Abstract: An optical transmitter including an optical waveguide and N microring resonators (MRRs) coupled to the optical waveguide is provided. In such an optical transmitter each of the N MRRs having a different coupling coefficient determining the amount of coupling to the optical waveguide, wherein N>1. In some embodiments, each of the N MRRs has a different spacing distance from the optical waveguide, wherein the coupling coefficient for each MRR is dependent on the spacing. In some embodiments the optical transmitter further includes an input for receiving N drive signals from a controller, each drive signal shifting the resonant wavelength of the corresponding MRR to control the optical power coupled in the corresponding MRR from the optical waveguide in which an optical signal propagates.

公开(公告)号：US09952482B2

公开(公告)日：2018-04-24

申请号：US15260446

申请日：2016-09-09

Applicant: The University of Bristol

Inventor： Terence Rudolph ,  Mark Thompson ,  Jonathan Matthews ,  Damien Bonneau

IPC: G02B6/12 ,  G02F1/35 ,  G01J1/42 ,  G02F1/365 ,  G02F1/355

CPC classification number: G02F1/3526 ,  G01J1/42 ,  G02F1/3536 ,  G02F1/3553 ,  G02F1/3558 ,  G02F1/365 ,  G02F2201/06 ,  G02F2203/15

Abstract: There is presented an optical apparatus comprising first and second photon pair sources configured to convert at least one pump light photon into a first and second correlated signal and idler photon pairs. In one example, the apparatus is configured to use one of the signal and idler photons from the first correlated photon pair for controlling the conversion of the pump light photon in the second photon pair source. The apparatus may configured such that, at least one of the signal and idler photons from the first correlated photon pair is output from the first photon pair source onto an optical path wherein at least one of the signal and idler photons from the second correlated photon pair is output from the second photon pair source onto the optical path. A method is also provided for outputting one or more photons using the optical apparatus.

公开(公告)号：US20180059507A1

公开(公告)日：2018-03-01

申请号：US15686935

申请日：2017-08-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunil KIM ,  Duhyun LEE ,  Changbum LEE ,  Byounglyong CHOI

IPC: G02F1/313

CPC classification number: G02F1/3137 ,  G02F1/2955 ,  G02F2001/311 ,  G02F2201/06

Abstract: A laser beam steering device and a system including the same are provided. The laser beam steering device includes a waveguide through which a laser beam passes, and a cladding layer disposed on the waveguide. The cladding layer has a refractive index which changes according to an electrical signal applied thereto and thus a phase of a laser beam passing through the waveguide may be changed.

公开(公告)号：US20180039154A1

公开(公告)日：2018-02-08

申请号：US15667536

申请日：2017-08-02

Applicant: University of Southern California

Inventor： Hossein Hashemi ,  SungWon Chung ,  Hooman Abediasl

IPC: G02F1/295 ,  G02F1/29

CPC classification number: G02F1/2955 ,  G02F1/292 ,  G02F2201/06 ,  G02F2203/50

Abstract: An optical device includes a row of optical units, each of the optical units comprising an antenna element and an associated phase shifting element, a first optical power splitter optically coupled to a first optical input/output element, and a first plurality of boundary adjustment elements. In the optical phased array, each of the first plurality of boundary adjustment units optically couples the first optical power splitter to different sub-rows of the row of optical units, and each of the plurality of boundary adjustment elements include a sub-row amplitude adjustment element and a sub-row phase adjustment element.

公开(公告)号：US09885892B2

公开(公告)日：2018-02-06

申请号：US15360752

申请日：2016-11-23

Applicant: Analog Devices, Inc.

Inventor： Michael H. Anderson ,  Scott R. Davis ,  Scott D. Rommel

IPC: G02F1/13 ,  G02F1/295

CPC classification number: G02F1/295 ,  G02F1/1326 ,  G02F1/29 ,  G02F1/2955 ,  G02F2001/291 ,  G02F2201/06 ,  G02F2201/12 ,  G02F2201/122

Abstract: A substantially planar waveguide for dynamically controlling the out-of-plane angle at which a light beam exits the waveguide. Generally, liquid crystal materials may be disposed within a waveguide in a cladding proximate or adjacent to a core layer of the waveguide. In one example, the waveguide may contain one or more taper regions such that the light beam exits the waveguide and propagates out-of-the-plane of the waveguide into an out-coupling medium at a propagation angle. In one example, the waveguide may contain one or more electrodes onto which one or more voltages may be applied. The magnitude of the propagation angle may be electronically controlled by altered by controlling or altering the magnitude of the one or more applied voltages.

公开(公告)号：US20170371226A1

公开(公告)日：2017-12-28

申请号：US15544442

申请日：2016-01-11

Applicant: Agency for Science, Technology and Research

Inventor： Junfeng Song ,  Xianshu Luo ,  Patrick Guo-Qiang Lo

IPC: G02F1/313

CPC classification number: G02F1/3133 ,  G02B6/42 ,  G02F2201/06 ,  G02F2201/12 ,  G02F2201/30 ,  G02F2203/15

Abstract: According to embodiments of the present invention, an optical device is provided. The optical device includes a waveguide structure including a floating gate, and an optical waveguide arranged spaced apart from the floating gate, wherein the optical waveguide overlaps with the floating gate, a carrier injection portion arranged spaced apart from the floating gate, and an electrode arrangement, wherein, in response to a first voltage difference applied to the electrode arrangement, the optical device is configured to inject charge carriers from the carrier injection portion to the floating gate to cause a change in refractive index of the waveguide structure, and wherein, in response to a second voltage difference applied to the electrode arrangement, the optical device is configured to drive the charge carriers from the floating gate to the optical waveguide to deplete the charge carriers.

公开(公告)号：US20170315421A1

公开(公告)日：2017-11-02

申请号：US15209488

申请日：2016-07-13

Applicant: The Regents of the University of Colorado, a body corporate

Inventor： Milos Popovic ,  Fabio Pavanello

IPC: G02F1/29

CPC classification number: G02F1/29 ,  G02F2201/06 ,  G02F2202/10

Abstract: Ring modulators based on interdigitated junctions may be driven in full or partial standing wave mode and, active regions (providing the modulation) and light-absorptive regions (e.g. providing electrical conduction) are placed in a pattern inside a resonant cavity in order to match the maxima and minima of the optical field, respectively. The pattern may be periodic to match the periodicity of a typical electromagnetic field which is periodic with the wavelength. It may also be aperiodic in the case that the cross-section or materials are engineered along the direction of propagation such that the propagation constant (and thus wavelength, i.e. optical wave “local periodicity”) change along the propagation direction.