公开(公告)号：US11929826B2

公开(公告)日：2024-03-12

申请号：US16189221

申请日：2018-11-13

Applicant: Infinera Corporation

Inventor： Jeffrey T. Rahn ,  Fred A. Kish, Jr. ,  Michael Reffle ,  Peter W. Evans ,  Vikrant Lal

IPC: H04B10/61 ,  H04B10/079 ,  H04B10/50 ,  H04J14/02 ,  H04J14/06

CPC classification number: H04J14/0221 ,  H04B10/07955 ,  H04B10/506 ,  H04B10/614 ,  H04J14/021 ,  H04J14/06

Abstract: Consistent with the present disclosure, a photonic integrated circuit (PIC) is provided that has 2 N channels (N being an integer). The PIC is optically coupled to N optical fibers, such that each of N polarization multiplexed optical signals are transmitted over a respective one of the N optical fibers. In another example, each of the N optical fibers supply a respective one of N polarization multiplexed optical signals to the PIC for coherent detection and processing. A multiplexer and demultiplexer may be omitted from the PIC, such that the optical signals are not combined on the PIC. As a result, the transmitted and received optical signals incur less loss and amplified spontaneous emission (ASE) noise. In addition, optical taps may be more readily employed on the PIC to measure outputs of the lasers, such as widely tunable lasers (WTLs), without crossing waveguides.

公开(公告)号：US10741999B2

公开(公告)日：2020-08-11

申请号：US15866102

申请日：2018-01-09

Applicant: Infinera Corporation

Inventor： Peter W. Evans ,  Mingzhi Lu ,  Fred A. Kish, Jr. ,  Vikrant Lal ,  Scott Corzine ,  John W. Osenbach ,  Jin Yan

IPC: H01S5/00 ,  H01S5/10 ,  H01S5/0625 ,  H01S5/024 ,  H01S5/026 ,  H01S5/042 ,  H01S5/06 ,  H01S5/22 ,  H01S5/30 ,  H04B10/50 ,  H04B10/61 ,  H04B10/2507 ,  H04B10/40 ,  H04B10/67 ,  H01S5/12 ,  H01S5/20 ,  H01S5/32

Abstract: Methods, systems, and apparatus, including a laser including a layer having first and second regions, the first region including a void; a mirror section provided on the layer, the mirror section including a waveguide core, at least part of the waveguide core is provided over at least a portion of the void; a first grating provided on the waveguide core; a first cladding layer provided between the layer and the waveguide core and supported by the second region of the layer; a second cladding layer provided on the waveguide core; and a heat source configured to change a temperature of at least one of the waveguide core and the grating, where an optical mode propagating in the waveguide core of the mirror section does not incur substantial loss due to interaction with portions of the mirror section above and below the waveguide core.

公开(公告)号：US10205301B2

公开(公告)日：2019-02-12

申请号：US15866148

申请日：2018-01-09

Applicant: Infinera Corporation

Inventor： Peter W Evans ,  Mingzhi Lu ,  Fred A. Kish, Jr. ,  Vikrant Lal ,  Scott Corzine ,  John W. Osenbach ,  Jin Yan

IPC: H01S5/00 ,  H01S5/10 ,  H01S5/0625 ,  H01S5/06 ,  H01S5/024 ,  H01S5/026 ,  H01S5/042 ,  H01S5/30 ,  H01S5/22 ,  H01S5/32 ,  H01S5/20 ,  H01S5/12

Abstract: Methods, systems, and apparatus, including a laser including a layer having first and second regions, the first region including a void; a mirror section provided on the layer, the mirror section including a waveguide core, at least part of the waveguide core is provided over at least a portion of the void; a first grating provided on the waveguide core; a first cladding layer provided between the layer and the waveguide core and supported by the second region of the layer; a second cladding layer provided on the waveguide core; and a heat source configured to change a temperature of at least one of the waveguide core and the grating, where an optical mode propagating in the waveguide core of the mirror section does not incur substantial loss due to interaction with portions of the mirror section above and below the waveguide core.

公开(公告)号：US10181697B2

公开(公告)日：2019-01-15

申请号：US15866115

申请日：2018-01-09

Applicant: Infinera Corporation

Inventor： Peter W. Evans ,  Mingzhi Lu ,  Fred A. Kish, Jr. ,  Vikrant Lal ,  Scott Corzine ,  John W. Osenbach ,  Jin Yan

IPC: H01S5/00 ,  H01S5/06 ,  H01S5/024 ,  H01S5/026 ,  H01S5/042 ,  H01S5/10 ,  H01S5/22 ,  H01S5/30 ,  G02B6/28 ,  H04B10/50 ,  H04B10/61 ,  G02F1/225 ,  H04B10/2507 ,  H04B10/40 ,  H04B10/67 ,  H01S5/0625 ,  H01S5/12 ,  H01S5/20 ,  H01S5/32

Abstract: Methods, systems, and apparatus, including a laser including a layer having first and second regions, the first region including a void; a mirror section provided on the layer, the mirror section including a waveguide core, at least part of the waveguide core is provided over at least a portion of the void; a first grating provided on the waveguide core; a first cladding layer provided between the layer and the waveguide core and supported by the second region of the layer; a second cladding layer provided on the waveguide core; and a heat source configured to change a temperature of at least one of the waveguide core and the grating, where an optical mode propagating in the waveguide core of the mirror section does not incur substantial loss due to interaction with portions of the mirror section above and below the waveguide core.