公开(公告)号：US20210328316A1

公开(公告)日：2021-10-21

申请号：US17360679

申请日：2021-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bengui YUAN ,  Puke ZHOU ,  Jinyan LI

IPC: H01P1/208 ,  H01P1/201 ,  H01P1/20 ,  H01P11/00

Abstract: The present disclosure relates to transverse magnetic wave (TM) mode filters and methods for manufacturing a TM mode filter. One example TM mode filter includes a filter body, a dielectric, and a transition layer, the filter body including a filter cavity and a cover, and having hollow confined space, the dielectric located in the hollow confined space, and the transition layer configured to connect the dielectric and the filter body. A coefficient of thermal expansion (CTE) of the transition layer is between a CTE of the filter body and a CTE of the dielectric.

公开(公告)号：US20240097395A1

公开(公告)日：2024-03-21

申请号：US18519189

申请日：2023-11-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yehui LIU ,  Shiyi CAO ,  Jinyan LI ,  Yingbo CHU

IPC: H01S3/067 ,  C03B37/012 ,  H01S3/094

CPC classification number: H01S3/06716 ,  C03B37/01262 ,  H01S3/094003 ,  C03B2201/34 ,  C03B2203/16 ,  H01S2301/02

Abstract: The technology of this application relates to an erbium-doped fiber. The erbium-doped fiber can be used in the fields of amplifiers, optical communications, rare-earth-doped fiber preparation, and the like. A fiber core of the erbium-doped fiber includes a first layer and a second layer from inside to outside. The first layer includes a center of the fiber core. The second layer is an annulus, and an outer ring of the annulus is an outer ring of the fiber core. An average doping concentration of erbium ions of the first layer is higher than an average doping concentration of erbium ions of the second layer. An ASE can be reduced by reducing a doping concentration of erbium ions of the second layer, to further reduce a noise figure of the erbium-doped fiber and improve communications quality.

公开(公告)号：US20190341663A1

公开(公告)日：2019-11-07

申请号：US16513620

申请日：2019-07-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuntao ZHU ,  Zheng LI ,  Jinyan LI

IPC: H01P1/20 ,  H01P7/10 ,  H01P1/208

Abstract: A transverse magnetic mode dielectric resonator includes a housing with a top opening, a cover disposed on an opening side of the housing, a cavity body enclosed by the cover and the housing, an inner wall of the cavity body electrically conductive, a resonant dielectric rod disposed in the cavity body, a cavity disposed inside the resonant dielectric rod, a tuning part disposed on the cover, one end of the tuning part stretched into the cavity and capable of moving up and down relative to the cavity, two ends of the resonant dielectric rod respectively soldered with the cover and a baseplate of the housing, where a part that is of the cover and that is soldered with the resonant dielectric rod is made of elastic material, and a part that is of the baseplate and that is soldered with the resonant dielectric rod is made of elastic material.