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公开(公告)号：US20210151952A1
公开(公告)日：2021-05-20
申请号：US17057645
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/042 , H01S5/0625 , H04B10/50 , H04B10/54 , H04B10/564 , H01S5/026
Abstract: A method (700) of biasing a tunable laser (310) during burst-on and burst-off states includes receiving a burst mode signal (514) indicative of the burst-on state or the burst-off state and when the burst mode signal is indicative of the burst-on state: delivering a first bias current (IGAIN) to an anode of a gain-section diode (590a) disposed on a shared substrate of the tunable laser; and delivering a second bias current (IPH) to an anode of phase-section diode (590b) disposed on the shared substrate. The second bias current is less than the first bias current. When the burst mode signal transitions to be indicative of the burst-off state, the method also includes delivering the first bias current to the anode of the gain-section diode; and delivering the second bias current to the anode of the phase-section diode wherein the first bias current is less than the second bias current.
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公开(公告)号：US12009635B2
公开(公告)日：2024-06-11
申请号：US17057649
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Xiangjun Zhao , Shuang Yin , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Ward Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/0625 , H01S5/024 , H04B10/50 , H04B10/572 , H04J14/02
CPC classification number: H01S5/06256 , H01S5/02415 , H04B10/504 , H04B10/572 , H04J14/0282
Abstract: A method (600) for tuning a tunable laser (310) includes delivering a bias current (IDBR) to an anode of a distributed Bragg reflector (DBR) section diode (D2) disposed on a shared substrate of the tunable laser and receiving a burst mode signal (440) indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes offsetting the bias current at the anode of the DBR section diode by one of sourcing a push current with the bias current to the anode of the DBR section diode or sinking a pull current away from the bias current at the anode of the DBR section diode. When the burst mode signal is indicative of the burst-on state, the method also includes ceasing any offsetting of the bias current at the anode of the DBR section diode.
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公开(公告)号：US11600965B2
公开(公告)日：2023-03-07
申请号：US17057651
申请日：2019-05-06
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/042 , H01S5/026 , H01S5/0625 , H01S5/068 , H01S5/323 , H04B10/50 , H04B10/27 , H04B10/564
Abstract: A method (900) includes a gain current (IGAIN) to an anode of a gain-section diode (D0) disposed on a shared substrate of a tunable laser (310), delivering a modulation signal to an anode of an Electro-absorption section diode (D2) disposed on the shared substrate of the tunable laser, and receiving a burst mode signal (330) indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes sinking a sink current (ISINK) away from the gain current at the anode of the gain-section diode. When the burst mode signal transitions to be indicative of the burst-on state from the burst-off state, the method includes ceasing the sinking of the sink current away from the gain current and delivering an overshoot current (IOVER) to the anode of the gain-section diode.
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公开(公告)号：US11901696B2
公开(公告)日：2024-02-13
申请号：US17057645
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/024 , H01S5/026 , H01S5/042 , H01S5/0625 , H04B10/50 , H04B10/54 , H04B10/564 , H04B10/27
CPC classification number: H01S5/0428 , H01S5/0265 , H01S5/06255 , H04B10/504 , H04B10/541 , H04B10/564 , H01S5/02453 , H04B10/27
Abstract: A method (700) of biasing a tunable laser (310) during burst-on and burst-off states includes receiving a burst mode signal (514) indicative of the burst-on state or the burst-off state and when the burst mode signal is indicative of the burst-on state: delivering a first bias current (IGAIN) to an anode of a gain-section diode (590a) disposed on a shared substrate of the tunable laser; and delivering a second bias current (IPH) to an anode of phase-section diode (590b) disposed on the shared substrate. The second bias current is less than the first bias current. When the burst mode signal transitions to be indicative of the burst-off state, the method also includes delivering the first bias current to the anode of the gain-section diode; and delivering the second bias current to the anode of the phase-section diode wherein the first bias current is less than the second bias current.
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公开(公告)号：US20210203130A1
公开(公告)日：2021-07-01
申请号：US17057652
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/042 , H01S5/068 , H01S5/10 , H01S5/323 , H01S5/0625
Abstract: A method (900) includes delivering a first bias current (IGAIN) to an anode of a gain-section diode (590a) and delivering a second bias current (IPH) to an anode of a phase-section diode (590b). The method also includes receiving a burst mode signal (514) indicative of a burst-on state or a burst-on state, and sinking a first sink current (ISINK) away from the first bias current when the burst mode signal is indicative of the burst-off state. When the burst mode signal transitions to be indicative of the burst-on state from the burst-off state, the method also includes sinking a second sink current away from the second bias current at the anode of the phase-section diode and ceasing the sinking of the first sink current away from the first bias current at the anode of the gain section diode.
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Patent Agency Ranking
公开(公告)号：US20210203129A1
公开(公告)日：2021-07-01
申请号：US17057651
申请日：2019-05-06
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
Abstract: A method (900) includes a gain current (IGAIN) to an anode of a gain-section diode (D0) disposed on a shared substrate of a tunable laser (310), delivering a modulation signal to an anode of an Electro-absorption section diode (D2) disposed on the shared substrate of the tunable laser, and receiving a burst mode signal (330) indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes sinking a sink current (ISINK) away from the gain current at the anode of the gain-section diode. When the burst mode signal transitions to be indicative of the burst-on state from the burst-off state, the method includes ceasing the sinking of the sink current away from the gain current and delivering an overshoot current (IOVER) to the anode of the gain-section diode.
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公开(公告)号：US20210167577A1
公开(公告)日：2021-06-03
申请号：US17057649
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Xiangjun Zhao , Shuang Yin , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/0625 , H01S5/024 , H04B10/572 , H04B10/50 , H04J14/02
Abstract: A method (600) for tuning a tunable laser (310) includes delivering a bias current (IDBR) to an anode of a distributed Bragg reflector (DBR) section diode (D2) disposed on a shared substrate of the tunable laser and receiving a burst mode signal (440) indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes offsetting the bias current at the anode of the DBR section diode by one of sourcing a push current with the bias current to the anode of the DBR section diode or sinking a pull current away from the bias current at the anode of the DBR section diode. When the burst mode signal is indicative of the burst-on state, the method also includes ceasing any offsetting of the bias current at the anode of the DBR section diode.
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公开(公告)号：US11594856B2
公开(公告)日：2023-02-28
申请号：US17057652
申请日：2019-05-07
Applicant: Google LLC
Inventor： Tao Zhang , Cedric Fung Lam , Shuang Yin , Xiangjun Zhao , Liang Du , Changhong Joy Jiang , Adam Edwin Taylor Barratt , Claudio Desanti , Muthu Nagarajan
IPC: H01S5/042 , H01S5/0625 , H01S5/068 , H01S5/323 , H04J4/00
Abstract: A method (900) includes delivering a first bias current (IGAIN) to an anode of gain-section diode (590a) and delivering a second bias current (IPH) to an anode of a phase-section diode (590b). The method also includes receiving a burst mode signal (514) indicative of a burst-on state or a burst-on state, and sinking a first sink current (ISINK) away from the first bias current when the burst mode signal is indicative of the burst-off state. When the burst mode signal transitions to be indicative of the burst-on state from the burst-off state, the method also includes sinking a second sink current away from the second bias current at the anode of the phase-section diode and ceasing the sinking of the first sink current away from the first bias current at the anode of the gain section diode.
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公开(公告)号：US10992387B2
公开(公告)日：2021-04-27
申请号：US16568759
申请日：2019-09-12
Applicant: Google LLC
Inventor： Cedric Fung Lam , Xiangjun Zhao , Shuang Yin , Muthu Nagarajan , Tao Zhang , Liang Du , Adam Edwin Taylor Barratt , Changhong Joy Jiang , Claudio Desanti
Abstract: A method of combining optical signals from a plurality of optical fibers into a single optical signal includes receiving, at corresponding optical-signal receivers optically coupled to corresponding trunk fibers, respective optical signals. The method further includes determining, by the corresponding optical-signal receivers, when each respective optical signal is received. When the respective optical signal is received, the method includes performing the following steps: converting, by the corresponding optical-signal receiver, the respective optical signal to a corresponding electrical signal; transmitting, by the corresponding optical-signal receiver, the corresponding electrical signal to a corresponding input channel of an electrical-multiplexing device; and configuring the electrical-multiplexing device to select the corresponding input channel. Configuring the electrical-multiplexing device to select the corresponding input channel causes the electrical-multiplexing device to transmit the corresponding electrical signal to an electro-optical converter configured to convert the corresponding electrical signal back to the respective optical signal.
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公开(公告)号：US20210083770A1
公开(公告)日：2021-03-18
申请号：US16568759
申请日：2019-09-12
Applicant: Google LLC
Inventor： Cedric Fung Lam , Xiangjun Zhao , Shuang Yin , Muthu Nagarajan , Tao Zhang , Liang Du , Adam Edwin Taylor Barratt , Changhong Joy Jiang , Claudio Desanti
Abstract: A method of combining optical signals from a plurality of optical fibers into a single optical signal includes receiving, at corresponding optical-signal receivers optically coupled to corresponding trunk fibers, respective optical signals. The method further includes determining, by the corresponding optical-signal receivers, when each respective optical signal is received. When the respective optical signal is received, the method includes performing the following steps: converting, by the corresponding optical-signal receiver, the respective optical signal to a corresponding electrical signal; transmitting, by the corresponding optical-signal receiver, the corresponding electrical signal to a corresponding input channel of an electrical-multiplexing device; and configuring the electrical-multiplexing device to select the corresponding input channel. Configuring the electrical-multiplexing device to select the corresponding input channel causes the electrical-multiplexing device to transmit the corresponding electrical signal to an electro-optical converter configured to convert the corresponding electrical signal back to the respective optical signal.
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