公开(公告)号：US10754221B2

公开(公告)日：2020-08-25

申请号：US16116277

申请日：2018-08-29

Applicant: Lumentum Operations LLC

Inventor： Hiroaki Yamada

IPC: G02B6/12 ,  G02F1/225 ,  G02F1/21

Abstract: An optical device may include a waveguide-based Mach-Zehnder (MZ) interferometer associated with performing polarization multiplexing or demultiplexing. The waveguide-based MZ interferomenter may include a first MZ arm, a second MZ arm, and a set of stress-balancing trenches. A portion of the first MZ arm may be between at least two stress-reducing trenches of a plurality of stress-reducing trenches. The plurality of stress-reducing trenches may be in a cladding layer on a substrate. The set of stress-balancing trenches may be on an opposite side of the second MZ arm from the plurality of stress-reducing trenches. The set of stress-balancing trenches may be in the cladding layer on the substrate.

公开(公告)号：US20170269301A1

公开(公告)日：2017-09-21

申请号：US15609827

申请日：2017-05-31

Applicant: Lumentum Operations LLC

Inventor： Barthelemy Fondeur ,  Hiroaki Yamada

IPC: G02B6/14 ,  G02B6/122

CPC classification number: G02B6/14 ,  G02B6/1228

Abstract: A spot size converter may include a tapered periodic segmented waveguide (PSW). The tapered PSW may include a plurality of waveguide segments defined by a plurality of gaps between the plurality of waveguide segments. The plurality of gaps may be at one or more angles that are not substantially parallel to a direction of a width of the tapered PSW. The direction of the width of the tapered PSW may be substantially perpendicular to a direction in which light passes through the tapered PSW.

公开(公告)号：US09915783B2

公开(公告)日：2018-03-13

申请号：US15609827

申请日：2017-05-31

Applicant: Lumentum Operations LLC

Inventor： Barthelemy Fondeur ,  Hiroaki Yamada

IPC: G02B6/14 ,  G02B6/122

CPC classification number: G02B6/14 ,  G02B6/1228

Abstract: A spot size converter may include a tapered periodic segmented waveguide (PSW). The tapered PSW may include a plurality of waveguide segments defined by a plurality of gaps between the plurality of waveguide segments. The plurality of gaps may be at one or more angles that are not substantially parallel to a direction of a width of the tapered PSW. The direction of the width of the tapered PSW may be substantially perpendicular to a direction in which light passes through the tapered PSW.

公开(公告)号：US09671560B1

公开(公告)日：2017-06-06

申请号：US15074143

申请日：2016-03-18

Applicant: Lumentum Operations LLC

Inventor： Barthelemy Fondeur ,  Hiroaki Yamada

IPC: G02B6/14 ,  G02B6/122

CPC classification number: G02B6/14 ,  G02B6/1228

Abstract: A spot size converter may include a tapered periodic segmented waveguide (PSW). The tapered PSW may include a plurality of waveguide segments defined by a plurality of gaps between the plurality of waveguide segments. The plurality of gaps may be at one or more angles that are not substantially parallel to a direction of a width of the tapered PSW. The direction of the width of the tapered PSW may be substantially perpendicular to a direction in which light passes through the tapered PSW.

公开(公告)号：US11994718B2

公开(公告)日：2024-05-28

申请号：US17129252

申请日：2020-12-21

Applicant: Lumentum Operations LLC

Inventor： Barthelemy Fondeur ,  Hiroaki Yamada ,  Jiamin Zheng

IPC: G02B6/293 ,  G02B6/12 ,  G02F1/21

CPC classification number: G02B6/2935 ,  G02F1/212 ,  G02B2006/12159

Abstract: In some implementations, a Mach-Zehnder interferometer (MZI) includes a delay line arm formed in a chip and a mirrored facet formed in the chip. The delay line arm may be configured to propagate light to the mirrored facet. The mirrored facet may be configured to reflect, to the delay line arm, a percentage of the light propagated to the mirrored facet by the delay line arm.