公开(公告)号：US09983371B2

公开(公告)日：2018-05-29

申请号：US15064108

申请日：2016-03-08

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Morees Ghandour ,  Elad Mentovich ,  Itshak Kalifa ,  Sylvie Rockman ,  Dalit Kimhi ,  Alon Webman

IPC: G02B6/42 ,  G01J1/02 ,  G01J1/04 ,  H01S5/024 ,  H01S5/183

CPC classification number: G02B6/4271 ,  G01J1/0252 ,  G01J1/0425 ,  G02B6/4214 ,  G02B6/428 ,  G02B6/4292 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/183

Abstract: An apparatus and method of assembly are described that provide improved mechanisms for cooling an optoelectronic transducer in a fiber optic system. The apparatus includes a thermoelectric cooler (TEC) secured to the optoelectronic transducer for removing heat from the optoelectronic transducer in response to instructions from a TEC driver, as well as a microcontroller electrically connected to the TEC driver for monitoring temperature and communicating with the TEC driver to selectively activate and deactivate the TEC at least partially based on the monitored temperature and/or other measured/detected data to effect a more efficient cooling mechanism for optoelectronic transducers, such as VCSELs. In addition, the user may be able to configure the system to maintain the optoelectronic transducer within a user-defined range of temperatures. In this way, a longer life and better performance of the optoelectronic transducer may be achieved, and datacenter costs related to cooling and/or maintenance may be minimized.

公开(公告)号：US20180003762A1

公开(公告)日：2018-01-04

申请号：US15199105

申请日：2016-06-30

Applicant: Mellanox Technologies, Ltd.

Inventor： Alex Burlak ,  Lion Bassat ,  Itshak Kalifa ,  Kfir Margalit ,  Morees Ghandour ,  Alon Webman ,  Elad Mentovich ,  Sylvie Rockman ,  Evelyn Landman

IPC: G01R31/26 ,  G01R31/28

CPC classification number: G01R31/2635 ,  G01R31/2642 ,  G01R31/2874 ,  H01S5/0014 ,  H01S5/0021 ,  H01S5/183

Abstract: A transducer reliability testing and VCSEL failure prediction method are provided. The method includes applying a testing temperature and a constant current to a VCSEL for a testing time. The method monitors a forward voltage of the VCSEL and determines if a first change in forward voltage is above a first predetermined threshold over the testing time and if a second change in forward voltage is above a second predetermined threshold over a portion of the testing time. The method determines failure of the VCSEL if either of these predetermined thresholds are exceeded. The method determines passage of the VCSEL if the first change in the forward voltage and the second change in the forward voltage are both below the first predetermined threshold and the second predetermined threshold, respectively.

公开(公告)号：US20170288770A1

公开(公告)日：2017-10-05

申请号：US15087562

申请日：2016-03-31

Applicant: Mellanox Technologies, Ltd.

Inventor： Elad Mentovich ,  Itshak Kalifa ,  Sylvie Rockman ,  Alon Webman ,  Dalit Kimhi ,  Alex Dikopoltsev

IPC: H04B10/079 ,  H04B10/25 ,  H04J14/02 ,  H04B10/572 ,  H04B10/50

CPC classification number: H04B10/0795 ,  H04B10/2504 ,  H04B10/40 ,  H04B10/503 ,  H04B10/504 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02

Abstract: An electro-optic transceiver module, method of manufacturing, and method of transmitting signals are provided that allow multiple optical signals at different wavelengths (e.g., according to CWDM) to be combined for transmission via a number of optical fibers that is smaller than the number of electrical channels according to which the optical signals were generated. Thus, CWDM may be used in connection with lower-cost VCSEL technology (e.g., as opposed to higher-cost edge-emitting lasers) by providing for wavelength compensation at the VCSEL driver to offset any changes in wavelength that may have otherwise occurred at the VCSELs. In particular, a microcontroller of the electro-optic transceiver module correlates a monitored temperature of the VCSELs to an actual wavelength of the corresponding optical signals transmitted by the respective VCSELS and determined an adjustment in a current supplied by the VCSEL driver to each VCSEL to achieve more precise and consistent wavelengths at the VCSELs.

公开(公告)号：US20170261712A1

公开(公告)日：2017-09-14

申请号：US15064108

申请日：2016-03-08

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Morees Ghandour ,  Elad Mentovich ,  Itshak Kalifa ,  Sylvie Rockman ,  Dalit Kimhi ,  Alon Webman

IPC: G02B6/42 ,  G01J1/04 ,  G01J1/02 ,  H01S5/024 ,  H01S5/183

CPC classification number: G02B6/4271 ,  G01J1/0252 ,  G01J1/0425 ,  G02B6/4214 ,  G02B6/428 ,  G02B6/4292 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/183

Abstract: An apparatus and method of assembly are described that provide improved mechanisms for cooling an optoelectronic transducer in a fiber optic system. The apparatus includes a thermoelectric cooler (TEC) secured to the optoelectronic transducer for removing heat from the optoelectronic transducer in response to instructions from a TEC driver, as well as a microcontroller electrically connected to the TEC driver for monitoring temperature and communicating with the TEC driver to selectively activate and deactivate the TEC at least partially based on the monitored temperature and/or other measured/detected data to effect a more efficient cooling mechanism for optoelectronic transducers, such as VCSELs. In addition, the user may be able to configure the system to maintain the optoelectronic transducer within a user-defined range of temperatures. In this way, a longer life and better performance of the optoelectronic transducer may be achieved, and datacenter costs related to cooling and/or maintenance may be minimized.

公开(公告)号：US09641465B1

公开(公告)日：2017-05-02

申请号：US13972968

申请日：2013-08-22

Applicant: Mellanox Technologies Ltd.

Inventor： Freddy Gabbay ,  Ido Bukshpan ,  Alon Webman ,  Miriam Menes ,  George Elias ,  Noam Katz Abramovich

IPC: H04L12/861

CPC classification number: H04L49/901 ,  H04L49/90 ,  H04L49/9094

Abstract: A switching device includes a plurality of ports and a switching core, which is coupled to transfer data packets between ingress and egress ports. Switching logic maintains a descriptor queue containing respective descriptors corresponding to the data packets that have been received and queued by the ports, and responsively to the respective descriptors, instructs the switching core to transfer the queued data packets between the ports. Port logic, which is associated with each port, is configured, upon receipt of a data packet from the network at the port, to signal the switching logic to place a descriptor corresponding to the data packet in the descriptor queue and, upon identifying the data packet as meeting a predefined criterion, to convey a request to the switching logic, bypassing the descriptor queue, to instruct the switching core to transfer the data packet immediately to an egress port.

公开(公告)号：US20140229645A1

公开(公告)日：2014-08-14

申请号：US13763676

申请日：2013-02-10

Applicant: MELLANOX TECHNOLOGIES LTD.

Inventor： Freddy Gabbay ,  Amiad Marelli ,  Alon Webman ,  Zachy Haramaty

IPC: G06F13/364

CPC classification number: G06F13/364

Abstract: An apparatus includes multiple data sources and arbitration circuitry. The data sources are configured to send to a common destination data items and respective arbitration requests, such that the data items are sent to the destination regardless of receiving any indication that the data items were served to the destination in response to the respective arbitration requests. The arbitration circuitry is configured to receive and buffer the data items, to perform arbitration on the buffered data items responsively to the arbitration requests, and to serve the buffered data items to the destination in accordance with the arbitration.

Abstract translation: 一种装置包括多个数据源和仲裁电路。 数据源被配置为发送到公共目的地数据项和相应的仲裁请求，使得数据项被发送到目的地，而不管接收到响应于各自的仲裁请求将数据项提供给目的地的任何指示。 仲裁电路被配置为接收和缓冲数据项，以响应于仲裁请求对缓冲的数据项执行仲裁，并且根据仲裁将缓冲的数据项服务到目的地。