公开(公告)号：US20190212505A1

公开(公告)日：2019-07-11

申请号：US16354780

申请日：2019-03-15

Applicant: Juniper Networks, Inc.

Inventor： Brandon W. Buckley ,  Brian Robert Koch ,  John Garcia ,  Jared Bauters ,  Sudharsanan Srinivasan ,  Anand Ramaswamy

IPC: G02B6/42 ,  G02B6/12 ,  G02B6/43 ,  G02B6/30 ,  H04B10/25

Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.

公开(公告)号：US11243362B2

公开(公告)日：2022-02-08

申请号：US16918397

申请日：2020-07-01

Applicant: Juniper Networks, Inc.

Inventor： Brandon W. Buckley ,  Brian Robert Koch ,  John Garcia ,  Jared Bauters ,  Sudharsanan Srinivasan ,  Anand Ramaswamy

IPC: G02B6/42 ,  G02B6/43 ,  G02B6/30 ,  G02B6/12 ,  H04B10/40 ,  H04B10/25

Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.

公开(公告)号：US20200333540A1

公开(公告)日：2020-10-22

申请号：US16918397

申请日：2020-07-01

Applicant: Juniper Networks, Inc.

Inventor： Brandon W. Buckley ,  Brian Robert Koch ,  John Garcia ,  Jared Bauters ,  Sudharsanan Srinivasan ,  Anand Ramaswamy

IPC: G02B6/42 ,  G02B6/43 ,  G02B6/30 ,  G02B6/12 ,  H04B10/40 ,  H04B10/25

Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.

公开(公告)号：US10281663B1

公开(公告)日：2019-05-07

申请号：US15864271

申请日：2018-01-08

Applicant: Juniper Networks, Inc.

Inventor： Brandon W. Buckley ,  Brian Robert Koch ,  John Garcia ,  Jared Bauters ,  Sudharsanan Srinivasan ,  Anand Ramaswamy

IPC: G02B6/42 ,  G02B6/43 ,  G02B6/30 ,  H04B10/25 ,  G02B6/12

Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.

公开(公告)号：US10739539B2

公开(公告)日：2020-08-11

申请号：US16354780

申请日：2019-03-15

Applicant: Juniper Networks, Inc.

Inventor： Brandon W. Buckley ,  Brian Robert Koch ,  John Garcia ,  Jared Bauters ,  Sudharsanan Srinivasan ,  Anand Ramaswamy

IPC: G02B6/42 ,  G02B6/43 ,  G02B6/30 ,  H04B10/25 ,  G02B6/12 ,  H04B10/40

Abstract: An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.