公开(公告)号：US20190181959A1

公开(公告)日：2019-06-13

申请号：US16268774

申请日：2019-02-06

Applicant: Luxtera, Inc.

Inventor： Gianlorenzo Masini ,  Subal Sahni

IPC: H04B10/60 ,  H01L31/028 ,  H01L31/0224 ,  G01J1/44 ,  H01L31/11 ,  H01L31/0368 ,  H03F3/08

CPC classification number: H04B10/60 ,  G01J1/44 ,  G01J2001/446 ,  H01L31/022408 ,  H01L31/028 ,  H01L31/03682 ,  H01L31/1105 ,  H03F3/08

Abstract: A method and system for optoelectronic receivers utilizing waveguide heterojunction phototransistors (HPTs) integrated in a wafer are disclosed and may include receiving optical signals via optical fibers operably coupled to a top surface of the chip. Electrical signals may be generated utilizing HPTs that detect the optical signals. The electrical signals may be amplified via voltage amplifiers, or transimpedance amplifiers, the outputs of which may be utilized to bias the HPTs by a feedback network. The optical signals may be coupled into opposite ends of the HPTs. A collector of the HPTs may comprise a silicon layer and a germanium layer, a base may comprise a silicon germanium alloy with germanium composition ranging from 70% to 100%, and an emitter including crystalline or poly Si or SiGe. The optical signals may be demodulated by communicating a mixer signal to a base terminal of the HPTs.

公开(公告)号：US20180337295A1

公开(公告)日：2018-11-22

申请号：US15779213

申请日：2016-11-24

Applicant: EMBERION OY

Inventor： Sami Seppo Antero KALLIOINEN ,  Martti Kalevi VOUTILAINEN

IPC: H01L31/0352 ,  H01L31/112 ,  H01L27/144 ,  G01J1/42 ,  G01J1/44

CPC classification number: H01L31/035218 ,  G01J1/00 ,  G01J1/4228 ,  G01J1/44 ,  H01L27/1443 ,  H01L31/112 ,  H01L31/18 ,  H01L51/42

Abstract: An apparatus comprising at least one pair of first and second photodetectors, each photodetector of the photodetector pair comprising a channel member, respective source and drain electrodes configured to enable a flow of electrical current 5 through the channel member between the source and drain electrodes, and a plurality of quantum dots configured to generate electron-hole pairs on exposure to incident electromagnetic radiation to produce a detectable change in the electrical current flowing through the channel member, wherein the apparatus is configured such that the first and second photodetectors 10 of the photodetector pair generate electron-hole pairs which produce an increase and decrease in electrical current through the channel members respectively, the combined change in electrical current of the pair of first and second photodetectors being indicative of one or more of the presence and magnitude of the incident electromagnetic radiation.

公开(公告)号：US20180335343A1

公开(公告)日：2018-11-22

申请号：US16028293

申请日：2018-07-05

Applicant: PsiQuantum Corp

Inventor： Faraz Najafi ,  Syrus ZIAI

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J1/0407 ,  G01J1/42 ,  G01J2001/4406 ,  G01J2001/442 ,  G01J2001/4446

Abstract: The various embodiments described herein include methods, devices, and systems for fabricating and operating photodetector circuitry. In one aspect, a photon detector system includes: (1) a first superconducting wire having a first threshold superconducting current; (2) a second superconducting wire having a second threshold superconducting current; (3) a resistor coupled to the first wire and the second wire; (4) current source(s) coupled to the first wire and configured to supply a current that is below the second threshold current; and (3) a second circuit coupled to the second wire. In response to receiving light at the first wire, the first wire transitions from a superconducting state to a non-superconducting state. In response to receiving light at the second wire while the first wire is in the non-superconducting state, the second wire transitions to a non-superconducting state, redirecting the first current to the second circuit.

公开(公告)号：US20180328784A1

公开(公告)日：2018-11-15

申请号：US16045450

申请日：2018-07-25

Applicant: K SCIENCES GP, LLC

Inventor： Valentin Korman

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/446

Abstract: A bridge circuit arrangement, method of providing said bridge circuit arrangement, and uses thereof are described. The bridge circuit arrangement comprises a first photodevice configured on a first arm, a second photodevice configured on a second arm, a first resistor configured on a third arm, and a second resistor configured on a fourth arm of the bridge. The first and second photodevice provide current flow.

公开(公告)号：US20180283937A1

公开(公告)日：2018-10-04

申请号：US15471846

申请日：2017-03-28

Applicant: Fluke Corporation

Inventor： J. David SCHELL ,  Seymour GOLDSTEIN

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01M11/33

Abstract: An optical measurement device and loss measurement is provided. The optical measurement device receives one or more optical signals that respectively emanate from one or more optical fibers of a plurality of optical fibers of an optical fiber cable. The optical measurement device captures one or more images of the one or more optical signals and determines, based on the one or more images, one or more receiving positions of the one or more optical signals, respectively.

公开(公告)号：US20180274975A1

公开(公告)日：2018-09-27

申请号：US15992853

申请日：2018-05-30

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Roger PANICACCI

IPC: G01J1/42 ,  G01J1/44 ,  H04N5/378

CPC classification number: G01J1/4228 ,  G01J1/44 ,  G01J2001/446 ,  H04N5/378

Abstract: An image sensor may include an array of image pixels coupled to analog-to-digital conversion circuitry formed from pinned photodiode charge transfer circuits. Majority charge carriers for the pinned photodiodes in the charge transfer circuits may be electrons for photodiode wells formed from n-type doped regions and may be holes for photodiode formed from p-type doped regions. Pinned photodiodes may be used for charge integration onto a capacitive circuit node. Pinned photodiodes may also be used for charge subtraction from a capacitive circuit node. Comparator circuitry may be used to determine digital values for the pixel output levels in accordance with single-slope conversion, successive-approximation-register conversion, cyclic conversion, and first or second order delta-sigma conversion techniques. The array of image pixels used for imaging may have a conversion mode wherein at least a portion of the pixel circuitry in the array are operated similar to the charge transfer circuits.

公开(公告)号：US10078009B2

公开(公告)日：2018-09-18

申请号：US14784979

申请日：2014-04-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Heiner Daerr ,  Klaus Juergen Engel ,  Christoph Herrmann ,  Roger Steadman Booker ,  Ewald Roessl

IPC: G01J1/44 ,  G01T1/17 ,  G01T1/24

CPC classification number: G01J1/44 ,  G01T1/171 ,  G01T1/24 ,  G01T1/247

Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.

公开(公告)号：US20180234096A1

公开(公告)日：2018-08-16

申请号：US15749370

申请日：2015-07-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Cheng LI ,  Kunzhi YU ,  Marco FIORENTINO ,  Raymond G BEAUSOLEIL

IPC: H03K17/78 ,  H03F3/08 ,  H04B10/69 ,  H03K17/94 ,  G01J1/44

CPC classification number: H03K17/78 ,  G01J1/44 ,  H03F3/082 ,  H03K17/941 ,  H04B10/6931

Abstract: In one example, a device includes a photodetector to generate an electrical signal in response to an optical signal and a transimpedance amplifier unit to receive the electrical signal. In one example, the transimpedance amplifier unit may include a first inverter unit, a second inverter unit coupled to the first inverter unit, and a third inverter unit coupled to the second inverter unit. In one example the third inverter unit may include a feedback resistor and a first n-type transistor in parallel to the feedback resistor, where the first n-type transistor is to provide a variable gain of the third inverter unit.

公开(公告)号：US20180224328A1

公开(公告)日：2018-08-09

申请号：US15859424

申请日：2017-12-30

Applicant: International Business Machines Corporation

Inventor： Stefan Abel ,  Jean Fompeyrine ,  Antonio La Porta

IPC: G01J1/44 ,  G01N21/03 ,  G01N21/05

CPC classification number: G01J1/44 ,  G01N15/00 ,  G01N21/0303 ,  G01N21/05 ,  G01N21/47 ,  G01N33/0004 ,  G01N2021/4711 ,  G01N2021/4719 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/1296

Abstract: An optical sensor includes an interaction region configured to comprise an analyte and an illumination source configured to illuminate the interaction region with an optical input signal. The optical sensor further includes an optical coupling structure configured to collect transmitted parts of the optical input signal from the interaction region and an optical neuromorphic network that is directly optically coupled to the optical coupling structure and is configured to receive and process the transmitted parts of the optical input signal in the optical domain. The invention further concerns a related method for analyzing an analyte by an optical sensor.

公开(公告)号：US20180224327A1

公开(公告)日：2018-08-09

申请号：US15428511

申请日：2017-02-09

Applicant: International Business Machines Corporation

Inventor： Stefan Abel ,  Jean Fompeyrine ,  Antonio La Porta

IPC: G01J1/44 ,  G01N21/03 ,  G01N21/05

CPC classification number: G01J1/44 ,  G01N15/00 ,  G01N21/0303 ,  G01N21/05 ,  G01N21/47 ,  G01N33/0004 ,  G01N2021/4711 ,  G01N2021/4719 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/1296

Abstract: An optical sensor includes an interaction region configured to comprise an analyte and an illumination source configured to illuminate the interaction region with an optical input signal. The optical sensor further includes an optical coupling structure configured to collect transmitted parts of the optical input signal from the interaction region and an optical neuromorphic network that is directly optically coupled to the optical coupling structure and is configured to receive and process the transmitted parts of the optical input signal in the optical domain. The invention further concerns a related method for analyzing an analyte by an optical sensor.