公开(公告)号：US11749963B2

公开(公告)日：2023-09-05

申请号：US16846636

申请日：2020-04-13

申请人： Mellanox Technologies Denmark ApS

发明人： Juan Jose Vegas Olmos ,  Roy Naveh ,  Elad Mentovich

IPC分类号： H01S5/042 ,  H01S5/026 ,  H01S5/06 ,  H01S5/183

CPC分类号： H01S5/0427 ,  H01S5/0261 ,  H01S5/0617 ,  H01S5/183

摘要： Embodiments are disclosed for driving a vertical cavity surface emitting laser (VCSEL). An example method includes injecting, via a universal driver, a direct current (DC) bias current to a VCSEL. The VCSEL is configured to convert the modulated signal into an optical signal encoding one or more bits. The example method further includes providing a modulated signal to the VCSEL. The modulated signal encodes a digital sequence comprising the one or more bits using a modulation method.

公开(公告)号：US20210320475A1

公开(公告)日：2021-10-14

申请号：US16846636

申请日：2020-04-13

申请人： Mellanox Technologies Denmark ApS

发明人： Juan Jose Vegas Olmos ,  Roy Naveh ,  Elad Mentovich

IPC分类号： H01S5/042

摘要： Embodiments are disclosed for driving a vertical cavity surface emitting laser (VCSEL). An example method includes injecting, via a universal driver, a direct current (DC) bias current to a VCSEL. The VCSEL is configured to convert the modulated signal into an optical signal encoding one or more bits. The example method further includes providing a modulated signal to the VCSEL. The modulated signal encodes a digital sequence comprising the one or more bits using a modulation method.

公开(公告)号：US10523471B2

公开(公告)日：2019-12-31

申请号：US15941831

申请日：2018-03-30

申请人： Mellanox Technologies Denmark ApS.

发明人： Juan Jose Vegas Olmos ,  Thorkild Franck ,  Anders Nejdel ,  Steen Christensen

IPC分类号： H04L25/03 ,  H04L27/06

摘要： Embodiments are disclosed for equalizing a pulse amplitude modulation signal for a receiver in a communication system. An example method includes receiving an electronic signal. The electronic signal encodes a plurality of symbols in a number of amplitude levels in a plurality of pulses in the electronic signal. The example method further includes estimating multiple symbol values using all possible values of an immediately preceding symbol for each symbol in the electronic signal. Each estimated symbol value is determined using one of the possible values of the immediately preceding symbol. The example method further includes receiving an actual value of the immediately preceding symbol and selecting an actual estimated symbol value from the multiple symbol values based on the actual value of the immediately preceding symbol. The actual estimated symbol value may be used as the actual value for selecting an estimated symbol value of an immediately subsequent symbol.

公开(公告)号：US10686528B2

公开(公告)日：2020-06-16

申请号：US16182964

申请日：2018-11-07

申请人： Mellanox Technologies Denmark ApS.

发明人： Thorkild Franck ,  Bjarke Vad Pedersen ,  Johan Jacob Mohr ,  Eyal David ,  Juan Jose Vegas Olmos

IPC分类号： H04B10/54 ,  H01S5/42 ,  H04B10/58 ,  H04B10/524

摘要： Embodiments are disclosed for generating a lookup table value for calibrating a lookup table circuit in an optical transmitter. The example method includes generating a calibration signal. The calibration signal encodes a plurality of bits in a number of amplitude levels. The example method further includes transmitting the calibration signal to a module under calibration and transmitting a symbol sequence of defined length to a reference module. The reference module compares the symbol sequence with a distorted signal received from the module under calibration to generate a set of condition count statistics. The example method further includes receiving the set of condition count statistics from the receiver in the reference module and calculating a lookup table value based on the set of condition count statistics. The example method further includes transmitting the lookup table value to a transmitter associated with the module under calibration.