公开(公告)号：US20250038850A1

公开(公告)日：2025-01-30

申请号：US18787048

申请日：2024-07-29

Applicant: XIAMEN EOCHIP SEMICONDUCTOR CO., LTD

Inventor： Yuanyuan ZHOU ,  Jinghu LI ,  Fujie CHEN ,  Liangqiong SHI

IPC: H04B10/2507 ,  H04B10/69 ,  H04B10/80

Abstract: A high-speed TIA anti-5G WIFI electromagnetic interference method includes the steps of: stacking a high-voltage capacitor C9 and a resistor R11 for constructing a filter circuit on a bare DIE chip of TIA; splitting C9 into two parallel filter capacitors C91 and C92, which satisfy C9=C91+C92, C91=C92; constructing differential output to cancel signal interference; constructing electromagnetic interference that cancels out lens leakage by stacking avalanche photodiode APD, C91 and gold-plated pad on the vertical axis close to the bare DIE chip, and connecting to the pads through gold wires; stacking R11 and C92 on the vertical axis between pins VDD and VAPD, connecting R11 to C91 through gold wire No. 1, connecting C92 to pin VAPD through gold wire No. 2, the gold wire No. 1 and the gold wire No. 2 form a 90° angle to offset the electromagnetic interference leaked by the lens.

公开(公告)号：US12212370B2

公开(公告)日：2025-01-28

申请号：US18012311

申请日：2021-04-23

Applicant: NEC Corporation

Inventor： Toshiki Imamura ,  Koya Takata ,  Fujio Okumura

IPC: H04B10/11 ,  H01L31/0232 ,  H04B10/50 ,  H04B10/69

Abstract: A light receiving device that includes a lens that collects a spatial light signal, a sensor array including a plurality of light receivers that receives the spatial light signal collected by the lens, and a reception unit that integrates an electric signal derived from the spatial light signal received by each of the plurality of light receivers and selects a light receiver that receives the spatial light signal. according to a voltage value of the integrated electric signal.

公开(公告)号：US12212369B2

公开(公告)日：2025-01-28

申请号：US18746581

申请日：2024-06-18

Applicant: ElectroPhotonic-IC Inc.

Inventor： Lawrence E. Tarof ,  Vighen Pacradouni ,  Gudmundur A. Hjartarson ,  Rony E. Amaya ,  Richard D. Clayton

IPC: H04B10/69 ,  H04Q11/00

Abstract: A burst-mode optical receiver for an optical line terminal (OLT) of a passive optical network (PON) comprises a variable optical attenuator (VOA), a photodiode (PD) which may be a pin-PD or an APD, a transimpedance amplifier (TIA), and a feedback/control circuit for adjusting a bias voltage of the VOA in response to a burst-mode optical input signal level, to provide an attenuated optical output signal to the PD having a narrower dynamic range. Providing signal level adjustment in the optical domain mitigates the requirement for a burst-mode TIA with a large dynamic range and provides for fast switching. The burst-mode optical receiver may comprise a waveguide configuration, wherein a first electro-absorption modulator (EAM) is operable as the VOA and a second EAM is operable as the photodiode. A monolithically integrated electro-photonic circuit comprising the VOA, PD, TIA and feedback/control circuit may be provided using InP-based semiconductor materials.

公开(公告)号：US12184336B1

公开(公告)日：2024-12-31

申请号：US18675909

申请日：2024-05-28

Applicant: Attochron, LLC

Inventor： Thomas M. Chaffee ,  Wayne H. Knox

IPC: H04B10/572 ,  H04B10/079 ,  H04B10/69

Abstract: Systems and methods are described for transmitting information optically. For instance, a system may include an optical source configured to generate a beam of light. The system may include at least one modulator configured to encode data on the beam of light to produce an encoded beam of light/encoded plurality of pulses. The system may include a spectrally-equalizing amplifier configured to receive the encoded beam of light/encoded plurality of pulses from the at least one modulator and both amplify and filter the encoded beam of light/encoded plurality of pulses to produce a filtered beam of light/filtered plurality of pulses, thereby spectrally equalizing a gain applied to the encoded beam of light. In some cases, the system may slice the beam of slight, to ensure a detector has impulsive detection. In some cases, the system may include a temperature controller to shift a distribution curve of wavelengths of the optical source.

公开(公告)号：US12183765B2

公开(公告)日：2024-12-31

申请号：US18169654

申请日：2023-02-15

Applicant: ARTILUX, INC.

Inventor： Yun-Chung Na

IPC: H01L27/146 ,  H01L31/113 ,  H04B10/69

Abstract: A photodetecting device includes a substrate, an array of sub-pixels, and a lens array covering the array of sub-pixels. Each sub-pixel includes a photosensitive layer supported by the substrate, the photosensitive layer being configured to absorb photons and generate photo-carriers, a first doped portion formed in the photosensitive layer of the respective sub-pixel, wherein the first doped portion includes dopants with a first conductivity type; and a second doped portion formed in the substrate, wherein the second doped portion includes dopants with a second conductivity type different from the first conductivity type. The array further includes an isolation region separating two or more sub-pixels of the array, a routing layer formed on the substrate configured to electrically couple a circuit to multiple sub-pixels of the array. The lens array includes a spacer portion and a plurality of lenses arranged in a one-to-one correspondence with each of the sub-pixels.

公开(公告)号：US12174781B2

公开(公告)日：2024-12-24

申请号：US18135472

申请日：2023-04-17

Applicant: Marvell Asia Pte Ltd

Inventor： Radhakrishnan L. Nagarajan ,  Chao Xu

IPC: G06F15/78 ,  G02B6/12 ,  G06F13/364 ,  G06F13/40 ,  G06F13/42 ,  H04B10/40 ,  H04B10/69 ,  H04B10/80 ,  H04L1/00 ,  H04L25/03 ,  H04L27/00 ,  H04L5/14 ,  H04L27/02 ,  H04L27/18 ,  H04L27/34

Abstract: A hybrid electrical and optic system-on-chip (SOC) device configured for both electrical and optic communication includes a substrate, an electrical device configured for electrical communication arranged on the substrate, a photonics device configured for optic communication arranged on the substrate, and a self-test module arranged on the substrate. The self-test module is configured to receive a loop-back signal indicative of an optical signal output from the photonics device and calibrate the photonics device based on the loop-back signal.

公开(公告)号：US12132520B1

公开(公告)日：2024-10-29

申请号：US18743060

申请日：2024-06-13

Applicant: EverPro (Wuhan) Technologies Company Limited

Inventor： Yan Ma ,  Hui Jiang ,  Xinliang Zhou

IPC: H04B10/2575 ,  H04B10/564 ,  H04B10/69 ,  H04B10/29

CPC classification number: H04B10/25751 ,  H04B10/564 ,  H04B10/697 ,  H04B10/29

Abstract: The disclosure discloses a receiving end/signal transmitting method, a pure-optical active cable and an active cable. The receiving end includes a first high-speed signal optoelectronic transmission module and a first low-speed signal optoelectronic transmission module; a power supply port of the first high-speed signal optoelectronic transmission module being connected with a high-speed signal line of the receiving end, and a power supply port of the first low-speed signal optoelectronic transmission module being connected with the high-speed signal line. When the high-speed signal line of the receiving end is connected to a termination power supply of a display device during signal transmitting, the first high-speed signal optoelectronic transmission module and the first low-speed signal optoelectronic transmission module are capable of acquiring a power supply signal from the high-speed signal line to solve power supply in the receiving end of the pure-optical active cable.

公开(公告)号：US12095546B2

公开(公告)日：2024-09-17

申请号：US17561945

申请日：2021-12-25

Applicant: Infinera Corporation

Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

IPC: H04B7/26 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/2575 ,  H04B10/40 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04J99/00 ,  H04L1/00 ,  H04L5/00 ,  H04Q11/00

CPC classification number: H04B7/2656 ,  H04B10/0773 ,  H04B10/0793 ,  H04B10/25 ,  H04B10/25754 ,  H04B10/40 ,  H04B10/503 ,  H04B10/504 ,  H04B10/505 ,  H04B10/548 ,  H04B10/61 ,  H04B10/613 ,  H04B10/69 ,  H04J14/005 ,  H04J14/0298 ,  H04J14/08 ,  H04J99/00 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071 ,  H04L5/001 ,  H04Q11/0005 ,  H04Q11/0067 ,  H04Q2011/0015 ,  H04Q2011/0035 ,  H04Q2011/0079

Abstract: A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

公开(公告)号：US12081270B2

公开(公告)日：2024-09-03

申请号：US17981223

申请日：2022-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jie Chen ,  Starovoit Ivan ,  Plotnikov Pavel ,  Hongchen Yu

IPC: H04B10/61 ,  H04B10/2507 ,  H04B10/54 ,  H04B10/69

CPC classification number: H04B10/541 ,  H04B10/2507 ,  H04B10/616 ,  H04B10/6163 ,  H04B10/6971

Abstract: A device and method related to processing an optical signal so as to compensate nonlinear distortions of optic fibers are provided. The method includes: generating a first signal by equalizing the optical signal using a first DBP algorithm; generate a first sequence of LLRs by demapping and deinterleaving the first signal; generating a first sequence of bits by iteratively decoding the first sequence of LLRs for a first number of iterations; generating a sequence of QAM symbols by mapping and interleaving the first sequence of bits; generating a second signal by equalizing the first signal based on the sequence of QAM symbols using a second DBP algorithm; generating a second sequence of LLRs by demapping and deinterleaving the second signal; and generating a second sequence of bits by iteratively decoding the second sequence of LLRs for a second number of iterations.

公开(公告)号：US20240277226A1

公开(公告)日：2024-08-22

申请号：US18650981

申请日：2024-04-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chungsoon PARK ,  Kyungmin KIM ,  Sujin PARK ,  Hyunggon KIM

IPC: A61B5/00 ,  H02J7/00 ,  H02J7/04 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H04B10/50 ,  H04B10/69

CPC classification number: A61B5/0017 ,  A61B5/0059 ,  H02J7/00045 ,  H02J7/0047 ,  H02J7/04 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H04B10/502 ,  H04B10/69 ,  A61B2562/0233

Abstract: An electronic device is provided comprising: a biometric sensor, including at least one light emitting diode (LED) and at least one light receiving unit, for acquiring biometric information by means of the at least one light emitting device and the at least one light receiving unit; a power receiving circuit configured to receive a wireless power signal from an external electronic device; and a processor operatively coupled to the biometric sensor and the power receiving circuit. The processor may be configured to receive a designated wireless power signal from the external electronic device by using the power receiving circuit and to perform optical communication with the external electronic device by using the biosensor when the designated wireless power signal is received. Other various embodiments identified from the specification are also possible.