公开(公告)号：US20190250336A1

公开(公告)日：2019-08-15

申请号：US16335232

申请日：2017-06-01

Applicant: Lumentum Operations LLC

Inventor： Yonghong GUO ,  Nicolas GUERIN ,  Chang XIAO ,  Xia HONG

IPC: G02B6/293 ,  H04J14/02 ,  H04B10/67 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094

CPC classification number: G02B6/29361 ,  G02B6/2938 ,  H01S3/0064 ,  H01S3/06754 ,  H01S3/094053 ,  H01S3/094061 ,  H01S3/0941 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/02212 ,  H01S5/02284 ,  H01S5/146 ,  H01S5/40 ,  H04B10/675 ,  H04J14/0227

Abstract: A pump laser package may include an input fiber to send signal light on a first optical path inside a package, a source to send pump light on a second optical path inside the package, and an output fiber on a third optical path inside the package. The pump laser package may include a WDM filter inside the package to receive the signal light on the first optical path and send the signal light on the third optical path, and receive the pump light on the second optical path and send the pump light on the third optical path. The pump laser package may include an isolator inside the package to transmit the signal light in a first direction, and block the signal light in a second direction, or a photo-diode to receive a portion of the signal light sent on a fourth optical path.

公开(公告)号：US20240356296A1

公开(公告)日：2024-10-24

申请号：US18756512

申请日：2024-06-27

Applicant: Lumentum Operations LLC

Inventor： Jian CHEN ,  Chang XIAO ,  Xia HONG ,  Fangdong ZHAO

IPC: H01S3/063 ,  G02B6/12 ,  G02B6/42 ,  H01S3/102

CPC classification number: H01S3/063 ,  G02B6/12019 ,  G02B6/4204 ,  H01S3/1022

Abstract: In some implementations, an optical isolator core includes a Faraday rotator and a plurality of birefringent crystal plates. The plurality of birefringent crystal plates may include a first birefringent crystal plate to separate input light into light having a first polarization and light having a second polarization, and a second birefringent crystal plate to combine the light having the first polarization and the light having the second polarization in output light that is laterally displaced by the single stage optical isolator. The Faraday rotator may be provided between the first birefringent crystal plate and the second birefringent crystal plate. In some implementations, the plurality of birefringent crystal plates further include a third birefringent crystal plate provided between the Faraday rotator and the second birefringent crystal plate. Additionally, or alternatively, the optical isolator core may further include a half-wave plate arranged between the Faraday rotator and the first birefringent crystal plate.

公开(公告)号：US20210351555A1

公开(公告)日：2021-11-11

申请号：US17164191

申请日：2021-02-01

Applicant: Lumentum Operations LLC

Inventor： Jian CHEN ,  Chang XIAO ,  Xia HONG ,  Fangdong ZHAO

IPC: H01S3/063 ,  G02B6/42 ,  H01S3/102 ,  G02B6/12

Abstract: In some implementations, an optical isolator core includes a Faraday rotator and a plurality of birefringent crystal plates. The plurality of birefringent crystal plates may include a first birefringent crystal plate to separate input light into light having a first polarization and light having a second polarization, and a second birefringent crystal plate to combine the light having the first polarization and the light having the second polarization in output light that is laterally displaced by the single stage optical isolator. The Faraday rotator may be provided between the first birefringent crystal plate and the second birefringent crystal plate. In some implementations, the plurality of birefringent crystal plates further include a third birefringent crystal plate provided between the Faraday rotator and the second birefringent crystal plate. Additionally, or alternatively, the optical isolator core may further include a half-wave plate arranged between the Faraday rotator and the first birefringent crystal plate.

公开(公告)号：US20170222395A1

公开(公告)日：2017-08-03

申请号：US15421210

申请日：2017-01-31

Applicant: Lumentum Operations LLC

Inventor： Yonghong GUO ,  Jay A. SKIDMORE ,  Xia HONG ,  John MARTINHO ,  Huijie XU ,  Lihua WANG ,  Yaogeng DING ,  Nicolas GUERIN

IPC: H01S5/022 ,  H01S5/12

CPC classification number: H01S5/02288 ,  H01S5/005 ,  H01S5/02 ,  H01S5/02212 ,  H01S5/02252 ,  H01S5/02284 ,  H01S5/12 ,  H01S5/141

Abstract: A pump laser package may include an input fiber to send signal light on a first optical path. A first lens may be arranged on the first optical path. The pump laser package may include a source to send pump light on a second optical path. A second lens and a negative lens may be arranged on the second optical path. The first lens and the negative lens may be arranged to create a virtual image associated with the pump light. The pump laser package may include an output fiber on a third optical path. The first lens may be arranged on the third optical path. The pump laser package may include a combiner to receive the signal light on the first optical path, receive the pump light on the second optical path, and send the signal light and the pump light on the third optical path.