公开(公告)号：US20240344891A1

公开(公告)日：2024-10-17

申请号：US18393142

申请日：2023-12-21

Applicant: The Regents of the University of California

Inventor： Kaikai Liu ,  Jiawei Wang ,  Andrei Isichenko ,  Nitesh Chauhan ,  Daniel J. Blumenthal

IPC: G01J9/02 ,  G02F1/21 ,  G02F1/225

CPC classification number: G01J9/02 ,  G02F1/212 ,  G02F1/225 ,  G01J2009/023 ,  G01J2009/0288 ,  G02F2203/15

Abstract: A device may include a first waveguide with an optical input at a first port. A device may include a second waveguide. A device may include a first coupler that optically couples the first waveguide to the second waveguide at a first position. A device may include a waveguide delay arm. A device may include a second coupler that optically couples the first waveguide to the second waveguide at a second position, the second position different from the first position.

公开(公告)号：US12113577B2

公开(公告)日：2024-10-08

申请号：US17453408

申请日：2021-11-03

Applicant: Cisco Technology, Inc.

Inventor： Daniel Kucharski ,  Sherif Abdalla ,  Brian Welch

IPC: G02B26/00 ,  G02B26/06 ,  G02F1/01 ,  G02F1/225 ,  H04B10/079 ,  H04B10/50 ,  H04B10/516 ,  H04B10/54 ,  G02B26/08 ,  G02F1/21

CPC classification number: H04B10/5161 ,  G02B26/06 ,  G02F1/0121 ,  G02F1/225 ,  G02F1/2255 ,  H04B10/0795 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/541 ,  G02B26/0841 ,  G02F1/212 ,  G02F2201/58

Abstract: Methods and systems for encoding multi-level pulse amplitude modulated signals using integrated optoelectronics are disclosed and may include generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by first and second electrical input signals, where the optical modulator may configure levels in the multi-level amplitude modulated optical signal, drivers are coupled to the optical modulator; and the first and second electrical input signals may be synchronized before being communicated to the drivers. The optical modulator may include optical modulator elements coupled in series and configured into groups. The number of optical modular elements and groups may configure the number of levels in the multi-level amplitude modulated optical signal. Unit drivers may be coupled to each of the groups. The electrical input signals may be synchronized before communicating them to the unit drivers utilizing flip-flops. Phase addition may be synchronized utilizing one or more electrical delay lines.

公开(公告)号：US20240329489A1

公开(公告)日：2024-10-03

申请号：US18192509

申请日：2023-03-29

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Yiwei Peng ,  Wayne Sorin ,  Yuan Yuan ,  Stanley Cheung ,  Thomas Van Vaerenbergh ,  Marco Fiorentino

IPC: G02F1/21 ,  G02F1/225 ,  G06N3/04

CPC classification number: G02F1/212 ,  G02F1/225 ,  G06N3/04 ,  G02F2203/50

Abstract: An example Mach-Zehnder interferometer (MZI) is provided. The MZI includes a first waveguide arm and a second waveguide arm coupled to the first waveguide arm via a pair of optical couplers. In the proposed MZI, at least one of the first waveguide arm and the second waveguide arm includes a plurality of Bragg-grating segments and a phase-shifter segment formed between adjacent Bragg-grating segments of the plurality of Bragg-grating segments. The phase-shifter segment formed between adjacent Bragg-grating segments induces a predefined phase-shift in an optical signal propagating through respective at least one of the first waveguide arm and the second waveguide arm, resulting in increased linearity an optical transmission via the MZI.

公开(公告)号：US20240288717A1

公开(公告)日：2024-08-29

申请号：US18114761

申请日：2023-02-27

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Xue Huang ,  Leonard Ketelsen

IPC: G02F1/01 ,  G02F1/21 ,  G02F1/225

CPC classification number: G02F1/0147 ,  G02F1/212 ,  G02F1/225

Abstract: In part, the disclosure relates to opto-electrical system. The system may include a waveguide defining an optical input and an optical output; a thermo-optic phase shifter (TOPS) that includes a first electrical contact and a second electrical contact, and a resistive heater in electrical communication with the first electrical contact and the second electrical contact, the TOPS configured to change a first phase of light entering the optical input to a second phase for light exiting the optical output, the TOPS having a resistance RTOPS, the TOPS in thermal communication with the waveguide; a voltage source in electrical communication with the first electrical contact; and a resistor that includes a first end and a second end, the resistor having a resistance RS, wherein the first end is grounded, wherein the second end is in electrical communication with the second electrical contact.

公开(公告)号：US20240255827A1

公开(公告)日：2024-08-01

申请号：US18390725

申请日：2023-12-20

Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

Inventor： Yu KATAOKA ,  Shotaro HIRATA ,  Yumi MURATA

IPC: G02F1/225 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/212

Abstract: An optical waveguide device including an optical waveguide formed on a substrate is provided, in which a directional coupler is disposed in a part of the optical waveguide, the directional coupler includes one center waveguide and two side waveguides disposed to interpose the center waveguide between the side waveguides, the side waveguides are disposed to come close to the center waveguide from a position where the side waveguides are separated from the center waveguide and then to be separated again from the center waveguide in a traveling direction of a light wave, and the center waveguide and the side waveguides are not in contact with each other.

公开(公告)号：US12044910B2

公开(公告)日：2024-07-23

申请号：US17725944

申请日：2022-04-21

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： Shuntaro Makino ,  Yoshinobu Kubota ,  Yasuhiro Ohmori ,  Masaharu Doi ,  Masaki Sugiyama ,  Shintaro Takeuchi ,  Yoshihiko Yoshida ,  Shinji Maruyama ,  Teruo Kurahashi

IPC: G02F1/035 ,  G02F1/21 ,  G02F1/225 ,  H04J14/02

CPC classification number: G02F1/0353 ,  G02F1/212 ,  G02F1/225 ,  G02F2202/20 ,  H04J14/02

Abstract: An optical device includes a thin film Lithium Niobate (LN) layer, a first optical waveguide, and a second optical waveguide. The thin film LN layer is an X-cut or a Y-cut LN layer. The first optical waveguide is an optical waveguide that is formed on the thin film LN layer along a direction that is substantially perpendicular to a Z direction of a crystal axis of the thin film LN layer. The second optical waveguide is an optical waveguide that is routed and connected to the first optical waveguide. At least a part of a core of the first optical waveguide is made thicker than a core of the second optical waveguide.

公开(公告)号：US12025830B2

公开(公告)日：2024-07-02

申请号：US17837774

申请日：2022-06-10

Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (CSIC) ,  UNIVERSIDAD DE MÁLAGA

Inventor： David González Andrade ,  Aitor Villafranca Velasco ,  Pedro Corredera Guilén ,  J. Gonzalo Wangüemert Pérez ,  Alejandro Ortega Moñux ,  Robert Halir ,  Iñigo Molina Fernández

IPC: G02B6/12 ,  G02B6/124 ,  G02B6/125 ,  G02B6/14 ,  G02B6/28 ,  G02B6/34 ,  G02F1/01 ,  G02F1/21 ,  G02F1/225 ,  G02B6/122

CPC classification number: G02B6/12004 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/125 ,  G02B6/14 ,  G02B6/2813 ,  G02B6/34 ,  G02F1/011 ,  G02F1/217 ,  G02F1/225 ,  G02B2006/12088 ,  G02B2006/1209 ,  G02B2006/12152 ,  G02B2006/12164 ,  G02B6/1228

Abstract: An integrated mode converter and multiplexer (/demultiplexer) combines a multimode interference coupler, at least one phase-shifter and a symmetrical Y-junction. The dispersion of the multimode interference coupler is engineered through subwavelength structures in order to achieve a very wide bandwidth. Several phase-shifter topologies for further bandwidth enhancement are disclosed, as well as architectures for multiplexing a greater number of optical modes.

公开(公告)号：US20240193410A1

公开(公告)日：2024-06-13

申请号：US18221068

申请日：2023-07-12

Applicant: Lightelligence PTE. Ltd.

Inventor： Yichen Shen ,  Huaiyu Meng ,  Li Jing ,  Rumen Dangovski ,  Peng Xie ,  Matthew Khoury ,  Cheng-Kuan Lu ,  Ronald Gagnon ,  Maurice Steinman ,  Jianhua Wu ,  Arash Hosseinzadeh

IPC: G06N3/067 ,  G02F1/00 ,  G02F1/225 ,  G02F3/02 ,  G06E1/04 ,  G06E3/00 ,  G06F17/14 ,  G06F17/16 ,  G06N3/08

CPC classification number: G06N3/0675 ,  G02F1/00 ,  G02F3/024 ,  G06E1/045 ,  G06E3/005 ,  G06E3/006 ,  G06E3/008 ,  G06F17/14 ,  G06F17/16 ,  G06N3/08 ,  G02F1/225

Abstract: Systems and methods that include: providing input information in an electronic format; converting at least a part of the electronic input information into an optical input vector; optically transforming the optical input vector into an optical output vector based on an optical matrix multiplication; converting the optical output vector into an electronic format; and electronically applying a non-linear transformation to the electronically converted optical output vector to provide output information in an electronic format.
In some examples, a set of multiple input values are encoded on respective optical signals carried by optical waveguides. For each of at least two subsets of one or more optical signals, a corresponding set of one or more copying modules splits the subset of one or more optical signals into two or more copies of the optical signals. For each of at least two copies of a first subset of one or more optical signals, a corresponding multiplication module multiplies the one or more optical signals of the first subset by one or more matrix element values using optical amplitude modulation. For results of two or more of the multiplication modules, a summation module produces an electrical signal that represents a sum of the results of the two or more of the multiplication modules.

公开(公告)号：US11988906B2

公开(公告)日：2024-05-21

申请号：US17873370

申请日：2022-07-26

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Chan-Hong Chern

IPC: G02F1/025 ,  G02B6/12 ,  G02F1/225 ,  G02F1/21

CPC classification number: G02F1/025 ,  G02B6/12 ,  G02F1/225 ,  G02B2006/12097 ,  G02B2006/12142 ,  G02F1/212 ,  G02F2201/063 ,  G02F2203/50

Abstract: An optical phase-shifting device includes a ribbed waveguide portion on an insulating layer, the waveguide portion having a p-n or p-i-n junction extending in a longitudinal direction and having a height. A pair of slab portions are disposed adjacent the waveguide portion, one on each side of the ribbed waveguide portion and on the insulation layer. The slab portion have higher doping concentrations than the respective doping concentrations in the ribbed waveguide portion. At least a portion of each slab portion has a height increasing with distance from the waveguide portion, with the slab height being smaller than that of the waveguide portion at the junction between the waveguide portion and slab portion. A pair of contact portions are formed adjacent the respective slab portion and further away from the waveguide portion. A portion of each contact portion can also have a height varying with distance from the waveguide portion.

公开(公告)号：US11977281B2

公开(公告)日：2024-05-07

申请号：US17235416

申请日：2021-04-20

Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.

Inventor： Sean P. Rodrigues ,  Paul Donald Schmalenberg ,  Yuqing Zhou ,  Ercan Mehmet Dede

IPC: G02F1/00 ,  G02B6/293 ,  G02F1/01 ,  G02F1/225

CPC classification number: G02F1/0054 ,  G02B6/2935 ,  G02F1/011 ,  G02F1/225 ,  G02F2201/12

Abstract: A silicon on insulator (SOI) photonic device having a waveguide is provided that includes a mode overlap portion with a topology optimized structure situated below an electrode of the capacitance structure. The device can significantly change a refractive index in a volume of mode overlap depending upon the applied potential to the capacitor and allows for a π phase shift in a modest mode overlap volume. The topology optimized structure has a waveguide and substrate that are partitioned in three dimensions using an extruded projection design. The electrode is a transition metal di-chalcogenide monolayer sheet (2D TMD). The enhanced mode overlay from the topology optimized waveguide portion allows a large reduction in the length of the waveguide with the mode overlap to achieve the needed phase shift for a photonic device.