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公开(公告)号：US10203366B2
公开(公告)日：2019-02-12
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
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.
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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
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.
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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
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.
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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
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.
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