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公开(公告)号：US20230041969A1
公开(公告)日：2023-02-09
申请号：US17394515
申请日：2021-08-05
Applicant: MELLANOX TECHNOLOGIES, LTD.
Inventor： Elad Mentovich , Itshak Kalifa
IPC: G11C11/404 , H01L51/00 , H01L51/05 , G11C11/4096
Abstract: A memory device includes a memory cell and a controller. The memory cell includes: (a) an array of molecule chains, at least one molecule chain includes: (i) first and second binding sites positioned at first and second ends of the molecule chain, respectively, and (ii) a chain of one or more fullerene derivatives, chemically connecting between the first and second binding sites, (b) source and drain electrodes, electrically connected to the first and second binding sites, respectively, and configured to apply to the array a source-drain voltage (VSD) along a first axis, and (c) a gate electrode, configured to apply to the array a gate voltage (VG) along a second different axis. The controller is configured to perform a data storage operation in the memory cell by (i) applying to the gate electrode a signal for producing the VG, and (ii) applying the VSD between the source and drain electrodes.
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公开(公告)号：US20230030962A1
公开(公告)日：2023-02-02
申请号：US17876245
申请日：2022-07-28
Applicant: Mellanox Technologies, Ltd.
Inventor： Itshak Kalifa , Elad Mentovich
Abstract: To address the need to excite lasers at a high frequency while minimizing electrical parasitic components, the present invention embraces a system and method of exciting a laser using a direct injection of an electron beam. The system may include a low voltage electron emission device made of one or more electron sources. When the device is activated, an electrical field is applied to the tip of each electron source, causing the electron source to emit a stream of electrons. The electrons are directed into a VCSEL, causing it to emit an optical signal. In another aspect, a system for random number generation is provided. The system may also include a processor that receives a measurement of an initial random value, executes an algorithm, where at least one input of the algorithm is the initial random value, and determines a final random value.
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公开(公告)号：US11496218B1
公开(公告)日：2022-11-08
申请号：US17306210
申请日：2021-05-03
Applicant: Mellanox Technologies, Ltd.
Inventor： Elad Mentovich , Itshak Kalifa , Hanan Shumacher , Yoram Zer , Yaakov Gridish , Eyal Waldman
Abstract: Optical communication modules and associated methods and computer program products for performing network communication security are provided. An example optical module includes a substrate, a first optoelectronic component supported by the substrate configured for operation with optical signals having a first wavelength, and a second optoelectronic component supported by the substrate configured for operation with optical signals having a second wavelength. The module further includes an optical communication medium defining a first end in optical communication with the first optoelectronic component and the second optoelectronic component and a second end. The module also includes security circuitry operably connected with the first optoelectronic component and the second optoelectronic component. The security circuitry determines the presence of a noncompliant component coupled with the optical communication medium at the second end based upon operation of the second optoelectronic component.
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公开(公告)号：US11165222B2
公开(公告)日：2021-11-02
申请号：US16404244
申请日：2019-05-06
Applicant: Mellanox Technologies, Ltd.
Inventor： Itshak Kalifa , Elad Mentovich
IPC: H01S5/00 , H01S5/028 , H01S5/183 , H01S5/02257
Abstract: A vertical-cavity surface-emitting laser (VCSEL) is provided. The VCSEL includes a mesa structure disposed on a substrate. The mesa structure has a first reflector, a second reflector, and an active cavity material structure disposed between the first and second reflectors. The mesa structure defines an optical window through which the VCSEL is configured to emit light. The mesa structure further includes a passivation layer disposed at least within the optical window. The passivation layer is designed to seal the mesa structure to reduce the humidity sensitivity of the VCSEL and to protect the VCSEL from contaminants. The passivation layer also provides an improvement in overshoot control, broader modulation bandwidth, and faster pulsing of the VCSEL such that the VCSEL may provide a high speed, high bandwidth signal with controlled overshoot and dumping behavior.
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公开(公告)号：US20210305783A1
公开(公告)日：2021-09-30
申请号：US16828764
申请日：2020-03-24
Applicant: Mellanox Technologies, Ltd.
Inventor： Itshak Kalifa , Elad Mentovich , Vladimir Iakovlev , Yuri Berk , Tamir Sharkaz
Abstract: A VCSEL includes an active region between a top distributed Bragg reflector (DBR) and a bottom DBR each having alternating GaAs and AlGaAs layers. The active region includes quantum wells (QW) confined between top and bottom GaAs-containing current-spreading layers (CSL), an aperture layer having an optical aperture and a tunnel junction layer above the QW. A GaAs intermediate layer configured to have an open top air gap is disposed over a boundary layer of the active region and the top DBR. The air gap is made wider than the optical aperture and has a height equal to one quarter of VCSEL's emission wavelength in air. The top DBR is attached to the intermediate layer by applying wafer bonding techniques. VCSEL output, the air gap, and the optical aperture are aligned on the same optical axis. The bottom DBR is epitaxially grown on a silicon or a GaAs substrate.
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Patent Agency Ranking
公开(公告)号：US20210126431A1
公开(公告)日：2021-04-29
申请号：US16665435
申请日：2019-10-28
Applicant: Mellanox Technologies, Ltd.
Inventor： Eran Aharon , Itshak Kalifa , Elad Mentovich , Matan Galanty , Isabelle Cestier
IPC: H01S5/183 , H01S5/06 , H01L41/113 , H01S5/42 , H01S5/40
Abstract: A tunable vertical-cavity surface-emitting laser (VCSEL) is provided. The VCSEL includes a VCSEL emission structure, piezoelectric material, and a piezoelectric electrode. The VCSEL emission structure includes a first reflector; a second reflector; and an active cavity material structure disposed between the first and second reflectors. The active cavity material structure includes an active region. The piezoelectric material is mechanically coupled to the VCSEL emission structure such that when the piezoelectric material experiences a mechanical stress, the mechanical stress is transferred to the active cavity material structure of the VCSEL emission structure. The piezoelectric electrode is designed to cause an electric field within the piezoelectric material. The electric field causes the piezoelectric material to experience the mechanical stress, which causes the active cavity material structure to experience the mechanical stress, which causes the emission wavelength of the VCSEL to be modified from a nominal wavelength of the VCSEL.
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17.发明授权公开(公告)号：US10522977B1
公开(公告)日：2019-12-31
申请号：US16179244
申请日：2018-11-02
Applicant: Mellanox Technologies, Ltd.
Inventor： Elad Mentovich , Itshak Kalifa , Sylvie Rockman , Eyal Waldman , Alon Webman , Isabelle Cestier
Abstract: An electro-optical link is provided. In an example embodiment, the electro-optical link includes a number of vertical cavity surface emitting lasers (VCSELs); one or more drivers that operate the VCSELs such that each of the VCSELs selectively emits an optical signal; one or more multiplexers that multiplex a number of optical signals into an optical fiber, each optical signal emitted by one of the VCSELs; and one or more optical fibers. At least two optical signals are multiplexed into each optical fiber of the one or more optical fibers. In some example configurations eight or sixteen optical signals are multiplexed into one optical fiber.
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18.发明授权公开(公告)号：US10012809B2
公开(公告)日：2018-07-03
申请号：US15187109
申请日：2016-06-20
Applicant: Mellanox Technologies, Ltd.
Inventor： Elad Mentovich , Itshak Kalifa , Sylvie Rockman , Pierre Avner Badehi , Anna Sandomirsky , Evelyn Landman
CPC classification number: G02B6/4245 , G02B6/12004 , G02B6/30 , G02B6/4206 , G02B6/428 , G02B6/4284
Abstract: An apparatus and method of assembly are described that provide an improved printed circuit board (PCB) assembly for an electro-optical interface, where more accurate positioning and alignment of electro-optical components can be achieved in an active part of the PCB assembly that is used for the electro-optical interface to meet tighter tolerances in an easier and more cost efficient manner. In particular, a photonic integrated circuit (PIC) is received in a cavity defined in a PCB that includes conductive elements for transmitting electrical signals. An optoelectronic transducer is connected to the PIC to convert between the optical signals and the corresponding electrical signals, and an optical coupler is secured to the optoelectronic transducer and supported by the PIC and/or PCB, where the optical coupler is configured to transmit the optical signals between the optoelectronic transducer and an optical fiber.
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公开(公告)号：US20170371114A1
公开(公告)日：2017-12-28
申请号：US15195538
申请日：2016-06-28
Applicant: Mellanox Technologies, Ltd.
Inventor： Elad Mentovich , Itshak Kalifa , Sylvie Rockman , Alon Webman , Amir Prescher , Evelyn Landman , Anna Sandomirsky , Eitan Zahavi , Yaakov Gridish
CPC classification number: G02B6/4243 , G02B6/32 , G02B6/4206 , G02B6/4214 , G02B6/423 , G02B6/4246 , G02B6/43
Abstract: An opto-mechanical coupler and corresponding method are provided. The coupler may include a first end and a second end configured to receive optical fibers and a top surface and bottomed surface defining a through hole extending between the top and bottom surfaces. The coupler may include a reflective surface that redirects the optical signals between a first direction and a second direction substantially perpendicular to the first direction. The coupler may position one or more optical fibers along a second direction such that an optical signal from the plurality of optoelectronic transceivers is directed into one or more optical fibers or an optical signal from the one or more optical fibers is directed into a plurality of the optoelectronic transceivers, with the coupler accommodating different diameters of optical fiber including POF, SMF, and/or MMF fiber.
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公开(公告)号：US12278304B2
公开(公告)日：2025-04-15
申请号：US17249140
申请日：2021-02-22
Applicant: Mellanox Technologies, Ltd.
Inventor： Yuri Berk , Vladimir Iakovlev , Tamir Sharkaz , Elad Mentovich , Matan Galanty , Itshak Kalifa , Paraskevas Bakopoulos
IPC: H01L31/105 , H01L31/0304
Abstract: Various embodiments of improved PIN-type photodiodes are provided. In an example embodiment, the PIN-type photodiode includes a p-type contact; an n-type contact; a first absorbing layer disposed between the p-type contact and the n-type contact; and a second absorbing layer disposed between the first absorbing layer and the n-type contact. The first absorbing layer is characterized by a first absorption coefficient and the second absorbing layer is characterized by a second absorption coefficient. The second absorption coefficient is greater than the first absorption coefficient. In another example embodiment, the PIN-type photodiode includes a p-type contact; an n-type contact; a first absorbing layer disposed between the p-type contact and the n-type contact; and a non-absorbing accelerating layer disposed between absorbing layers and non-absorbing drift layer and the n-type contact.
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