公开(公告)号：US11637637B1

公开(公告)日：2023-04-25

申请号：US17645883

申请日：2021-12-23

Applicant: Equinix, Inc.

Inventor： Qiang Wang ,  Balakrishnan Sridhar ,  Iwan Kartawira ,  Manveer Singh ,  Mohan Rao G. Lingampalli

IPC: H04B10/61

Abstract: Techniques are described for providing a hybrid compensation of chromatic dispersion in optical networks to reduce power consumption by coherent receivers. In some examples, a controller may receive a chromatic dispersion value of an optical signal from a coherent receiver integrated with a receiver optical network device. The controller may compare the chromatic dispersion value with a threshold. The controller may, in response to determining that the chromatic dispersion value satisfies the threshold, perform at least one of: configure a switch connected to a dispersion compensation module (DCM) with a state to provide access to the DCM to compensate the chromatic dispersion value of the optical signal, or adjust a phase response of a filter of a coherent transmitter to compensate the chromatic dispersion value of the optical signal.

公开(公告)号：US12028660B2

公开(公告)日：2024-07-02

申请号：US17819797

申请日：2022-08-15

Applicant: Equinix, Inc.

Inventor： Iwan Kartawira ,  Balakrishnan Sridhar ,  Manveer Singh ,  Qiang Wang ,  Mohan Rao G. Lingampalli

IPC: H04J14/00 ,  G02B6/35 ,  H04Q11/00

CPC classification number: H04Q11/0005 ,  G02B6/356 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0052

Abstract: An example cascaded optical switch includes: a fast optical switch and a slow optical switch both having input ports and output ports. A switching time of the slow switch is longer than a switching time of the fast optical switch. The cascaded optical switch includes a first pre-cabled optical fiber connecting an output port of the slow optical switch to an input ports of the fast optical switch, and a second pre-cabled optical fiber connecting an output ports of the fast optical switch to an input ports of the slow optical switch. The fast optical switch or the slow optical switch is configured to receive configuration data to modify a switching configuration to configure a fiber cross-connect in the optical switch fabric that includes at least one of the first pre-cabled optical fiber or the second pre-cabled optical fiber.

公开(公告)号：US20240097821A1

公开(公告)日：2024-03-21

申请号：US17820456

申请日：2022-08-17

Applicant: Equinix, Inc.

Inventor： Qiang Wang ,  Pradeep Swargam ,  Balakrishnan Sridhar ,  Iwan Kartawira ,  Manveer Singh ,  Mohan Rao G. Lingampalli

IPC: H04L1/00 ,  H04B10/40

CPC classification number: H04L1/0076 ,  H04B10/40 ,  H04L1/0041

Abstract: In an example of the disclosed techniques, a method comprising computing, by a computing system, a distribution of symbol errors in a forward error correction (FEC) frame transmitted in an optical signal. The method further includes, in response to determining that the distribution of symbol errors indicates a burst error that satisfies a threshold, adjusting, in an optical transceiver module, one or more of a pre-cursor setting, a post-cursor setting, or a signal amplitude for the optical signal.

公开(公告)号：US12107680B2

公开(公告)日：2024-10-01

申请号：US17820456

申请日：2022-08-17

Applicant: Equinix, Inc.

Inventor： Qiang Wang ,  Pradeep Swargam ,  Balakrishnan Sridhar ,  Iwan Kartawira ,  Manveer Singh ,  Mohan Rao G. Lingampalli

IPC: H04L1/00 ,  H04B10/40

CPC classification number: H04L1/0076 ,  H04B10/40 ,  H04L1/0041

Abstract: In an example of the disclosed techniques, a method comprising computing, by a computing system, a distribution of symbol errors in a forward error correction (FEC) frame transmitted in an optical signal. The method further includes, in response to determining that the distribution of symbol errors indicates a burst error that satisfies a threshold, adjusting, in an optical transceiver module, one or more of a pre-cursor setting, a post-cursor setting, or a signal amplitude for the optical signal.

公开(公告)号：US20240056704A1

公开(公告)日：2024-02-15

申请号：US17819797

申请日：2022-08-15

Applicant: Equinix, Inc.

Inventor： Iwan Kartawira ,  Balakrishnan Sridhar ,  Manveer Singh ,  Qiang Wang ,  Mohan Rao G. Lingampalli

IPC: H04Q11/00 ,  G02B6/35

CPC classification number: H04Q11/0005 ,  G02B6/356 ,  H04Q2011/0024 ,  H04Q2011/0016 ,  H04Q2011/0052 ,  H04Q2011/0039

Abstract: An example cascaded optical switch includes: a fast optical switch and a slow optical switch both having input ports and output ports. A switching time of the slow switch is longer than a switching time of the fast optical switch. The cascaded optical switch includes a first pre-cabled optical fiber connecting an output port of the slow optical switch to an input ports of the fast optical switch, and a second pre-cabled optical fiber connecting an output ports of the fast optical switch to an input ports of the slow optical switch. The fast optical switch or the slow optical switch is configured to receive configuration data to modify a switching configuration to configure a fiber cross-connect in the optical switch fabric that includes at least one of the first pre-cabled optical fiber or the second pre-cabled optical fiber.