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公开(公告)号：US20250047518A1
公开(公告)日：2025-02-06
申请号：US18792054
申请日：2024-08-01
Applicant: Applied Optoelectronics, Inc.
Inventor： Rafael CELEDON , Yi WANG , Tina MATHEWS , Ruru CHEN , Mark SIEJKA , Hang XIE , Ramesh NALLUR , Stefan MURRY , David STEWART
Abstract: Low data rate, low power, bi-directional transmissions may be provided over existing physical communication media (e.g., coaxial cables) using a portable network communications module and in the presence of higher bandwidth, higher power primary signals currently being transmitted over the communication media. The low data rate, low power, bi-directional transmissions may be accomplished using spread-spectrum modulated signals that are positioned in frequency relative to the primary signals, such that the low data rate, low power transmissions occur without detectable interference with the primary signals, which include multiplexed narrowband modulated signals. The primary signals may be modulated using quadrature amplitude modulation (QAM) and multiplexed using orthogonal frequency division multiplexing (OFDM) and the spread-spectrum modulated signals may be chirp spread spectrum (CSS) modulated signals modulated using Gaussian frequency shift keying (GFSK). One example of the spread-spectrum modulated signals is implemented using LoRa technology and communication protocols defined by the LoRaWAN standard.
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82.发明申请公开(公告)号：US20250030209A1
公开(公告)日：2025-01-23
申请号：US18223801
申请日：2023-07-19
Applicant: Applied Optoelectronics, Inc.
Inventor： William G. Mahoney
Abstract: A coaxial cable seizure assembly includes a stamped conductor with a leaf spring receptacle portion to provide a coaxial cable connection inside an HFC network device, such as an HFC node or amplifier. The stamped conductor portion is stamped from a single piece of metal and is located in an insulator portion. The insulator portion may be located inside a housing of the HFC network device adjacent a coaxial cable port such that the leaf spring receptacle portion is aligned with and receives a coaxial cable center conductor pin of a coaxial cable connected to the coaxial cable port. In one embodiment, a coaxial cable seizure assembly further includes a pin portion formed from the same piece of metal as the leaf spring receptacle. In another embodiment, a PCB-mounted coaxial cable seizure assembly further includes a PCB mounting portion formed from the same piece of metal as the leaf spring receptacle.
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83.发明授权公开(公告)号：US12126388B2
公开(公告)日：2024-10-22
申请号：US17901282
申请日：2022-09-01
Applicant: Applied Optoelectronics, Inc.
Inventor： Steven Blashewski
IPC: H04B17/00
CPC classification number: H04B17/0085
Abstract: A forward and reverse test point circuit with a switchable termination may be used to provide testing of forward and reverse RF signals in an RF amplifier before and/or after amplification. The switchable forward and reverse test point circuit includes at least one switchable termination circuit coupled between forward and reverse terminals of a directional coupler and at least one test point. During forward signal testing, the forward terminal is switched to the at least one test point and the reverse terminal is switched to a termination. During reverse signal testing, the reverse terminal is switched to the at least one test point and the forward terminal is switched to a termination. The RF amplifier including the switchable forward and reverse test point circuit may be used in a hybrid fiber-coaxial (HFC) network delivering CATV services and may be capable of amplifying RF signals up to 1.8 GHz.
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84.发明公开公开(公告)号：US20240204484A1
公开(公告)日：2024-06-20
申请号：US18084896
申请日：2022-12-20
Applicant: Applied Optoelectronics, Inc.
Inventor： Dapeng XU , Klaus Alexander ANSELM , Huanlin ZHANG
CPC classification number: H01S5/2054 , H01S5/0206 , H01S5/2275 , H01S5/34
Abstract: A multi-section semiconductor optical amplifier (SOA) includes at least two sections in series—an input section at an input side and an output section at an output side—with the input section having a higher optical confinement (also referred to as a high gamma) and the output section having a lower optical confinement (also referred to as a low gamma). The input section may also have a shorter length than the output section. The multi-section structure allows optimizing the input side and the output side design separately such that the input section provides a high gain section configured to quickly increase optical power and the output section provides a low differential gain section that improves saturation. As a result, the multi-section SOA can achieve higher output power with high gain and lower signal noise while demanding low input power.
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85.发明授权公开(公告)号：US11812072B2
公开(公告)日：2023-11-07
申请号：US17533642
申请日：2021-11-23
Applicant: Applied Optoelectronics, Inc.
Inventor： William G. Mahoney , Simon Farfoud , Steve Blashewski
IPC: H05K5/00 , H04N21/226 , H05K5/02 , H05K7/20
CPC classification number: H04N21/226 , H05K5/0004 , H05K5/0247 , H05K7/20409
Abstract: An aspect of the present disclosure includes a node housing for use in a broadband distribution network that includes coupling the amplifier to a lid portion and providing an interface plate in a base portion that allows for RF and power signals to be provided to the RF amplifier within the lid portion. The interface plate disposed within the base portion further preferably provides power pass-through to downstream nodes that remains electrically connected even when the amplifier is decoupled from the lid portion. Thus, the amplifier and/or lid portion may be decoupled from the base portion without disrupting power distribution to the down-stream nodes.
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Patent Agency Ranking
公开(公告)号：US11698497B2
公开(公告)日：2023-07-11
申请号：US17192062
申请日：2021-03-04
Applicant: Applied Optoelectronics, Inc.
Inventor： Hao-Chiang Cheng , Kai-Sheng Lin
CPC classification number: G02B6/4209 , G02B6/4215 , G02B6/4246 , H04B10/40 , H04B10/60
Abstract: An optical fiber holder is disclosed herein that includes at least one confinement slot for routing intermediate optical fibers within a housing of an optical assembly module, and preferably, a plurality of confinement slots for maintaining a target/nominal fiber bending radius for one or more intermediate optical fibers within the housing. Preferably, the optical fiber holder is disposed within the housing of an optical subassembly between an optical component, e.g., a TOSA arrangement and/or ROSA arrangement, and optical coupling receptacles, e.g., LC coupling receptacles, for optically coupling with external fibers for sending and/or receiving optical signals.
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公开(公告)号：US20230114839A1
公开(公告)日：2023-04-13
申请号：US17500269
申请日：2021-10-13
Applicant: Applied Optoelectronics, Inc.
Inventor： William G. MAHONEY
Abstract: The present disclosure is generally directed to an RF connector assembly for use within a node of a broadband distribution network, and can receive a center conductor pin of a coaxial cable, e.g., via insertion by a technician, and electrically couple the center conductor pin to circuitry within the node, such as an amplifier. The RF connector assembly preferably also securely physically couples to the center conductor pin via a spring-biased arrangement (and thus by extension securely couples the coaxial cable to the housing of the node) which can supply a bias force to the center conductor pin in response to insertion of the same into the RF connector assembly. This advantageously eliminates the necessity of opening the housing of the node to couple/decouple the center conducting pin of the coaxial cable to the node.
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公开(公告)号：US20230006402A1
公开(公告)日：2023-01-05
申请号：US17366851
申请日：2021-07-02
Applicant: Applied Optoelectronics, Inc.
Inventor： William G. MAHONEY , Rafael CELEDON , Simon FARFOUD
Abstract: The present disclosure is generally directed to a connector assembly that includes an increased outer diameter of the connector member relative to the equivalent G-type connector and an increased inner diameter of the receptable member relative to the equivalent G-type receptacle (also referred to as a seizure nut) to achieve higher current carrying capacity and target frequency rates of up to 3.0 Ghz, for example. In one preferred example, this results in a connector assembly consistent with the present disclosure having a connector member with an outer diameter of at least 10.70 mm, and more preferably 10.76±0.01 mm, rather than the 9.4 mm diameter of existing G-type connectors. Despite this increased diameter, a seizure assembly consistent with the present disclosure can achieve a functional impedance of 75 ohms to maintain nominal signal quality.
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公开(公告)号：US20220283390A1
公开(公告)日：2022-09-08
申请号：US17192062
申请日：2021-03-04
Applicant: Applied Optoelectronics, Inc.
Inventor： Hao-Chiang CHENG , Kai-Sheng LIN
Abstract: An optical fiber holder is disclosed herein that includes at least one confinement slot for routing intermediate optical fibers within a housing of an optical assembly module, and preferably, a plurality of confinement slots for maintaining a target/nominal fiber bending radius for one or more intermediate optical fibers within the housing. Preferably, the optical fiber holder is disposed within the housing of an optical subassembly between an optical component, e.g., a TOSA arrangement and/or ROSA arrangement, and optical coupling receptacles, e.g., LC coupling receptacles, for optically coupling with external fibers for sending and/or receiving optical signals.
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公开(公告)号：US11411650B2
公开(公告)日：2022-08-09
申请号：US16751817
申请日：2020-01-24
Applicant: Applied Optoelectronics, Inc.
Inventor： Kai-Sheng Lin , Kevin Liu , Hao-Chiang Cheng
Abstract: The present disclosure is generally directed to a component bridge that couples to a feedthrough device to provide additional component mounting surface area within a TOSA housing, and preferably, within a hermetically-sealed TOSA housing. The component bridge includes a body that defines a component mounting surface to couple to electrical components, e.g., one or more filtering capacitors, and a notched portion to provide an accommodation groove. The component bridge includes at least one projection/leg for coupling to a mounting surface of a feedthrough device. The accommodation groove of the component bridge allows for other electrical components, e.g., RF traces, to be patterned/disposed on to the mounting surface and extend at least partially through the accommodation groove while remaining electrically isolated from the same. Accordingly, the component bridge further increases available component mounting surface area for existing feedthrough devices without necessity of re-design and/or modification.
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