公开(公告)号：US11888583B2

公开(公告)日：2024-01-30

申请号：US17543616

申请日：2021-12-06

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Shinsuke Fujisawa ,  Hussam Batshon ,  Takigawa Yoshinari ,  Ryuji Aida ,  Takanori Inoue ,  Eduardo Rodriguez ,  Yoshihisa Inada

IPC: H04Q11/00 ,  H04J14/02 ,  G02B6/44 ,  G02B6/50

CPC classification number: H04J14/0221 ,  G02B6/4427 ,  H04Q11/0001 ,  G02B6/506

Abstract: Aspects of the present disclosure describe systems, methods. and structures directed to an integrated 3-way branching unit switch module suitable for undersea application.

公开(公告)号：US11700067B2

公开(公告)日：2023-07-11

申请号：US17468655

申请日：2021-09-07

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Shinsuke Fujisawa ,  Hussam Batshon ,  Yoshinari Takigawa ,  Ryu Kurahashi ,  Ryuji Aida ,  Kohei Nakamura ,  Takanori Inoue ,  Eduardo Rodriguez ,  Yoshihisa Inada

IPC: H04Q11/00 ,  H04B10/80 ,  G02B6/44

CPC classification number: H04B10/80 ,  G02B6/4427 ,  H04Q11/0001

Abstract: Aspects of the present disclosure describe a three-way branching unit switch module having a small footprint suitable for application in an undersea application.

公开(公告)号：US12034482B2

公开(公告)日：2024-07-09

申请号：US17336280

申请日：2021-06-01

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Eduardo Mateo Rodriguez ,  Shinsuke Fujisawa ,  Hussam Batshon ,  Kohei Nakamura ,  Takanori Inoue ,  Yoshihisa Inada ,  Takaaki Ogata

IPC: H04B10/2537 ,  G01H9/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/30 ,  H04B10/073 ,  H04B10/61

CPC classification number: H04B10/2537 ,  G01H9/004 ,  H01S3/06716 ,  H01S3/10061 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/073 ,  H04B10/615

Abstract: Aspects of the present disclosure are directed to systems, methods, and structures providing for the accurate measurement of guided acoustic-wave Brillouin scattering in optical fiber transmission systems and facilities.

公开(公告)号：US11933605B2

公开(公告)日：2024-03-19

申请号：US17577315

申请日：2022-01-17

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Hussam Batshon ,  Shinsuke Fujisawa ,  Kohei Nakamura ,  Takanori Inoue ,  Eduardo Mateo Rodriguez ,  Yoshihisa Inada

IPC: G01B11/27 ,  G01M11/00

CPC classification number: G01B11/272 ,  G01M11/33

Abstract: Aspects of the present disclosure describe estimating/measuring core-cladding concentricity error in optical fibers. In sharp contrast to the prior art, our inventive method is based on measuring a seemingly unrelated property of fibers called guided acoustic wave Brillouin scattering (GAWBS). As we shall show and describe, by analyzing this GAWBS property we advantageously determine what level of CCCE is exhibited by the optical fiber.

公开(公告)号：US11467061B2

公开(公告)日：2022-10-11

申请号：US17341033

申请日：2021-06-07

Applicant: NEC Laboratories America, Inc.

Inventor： Fatih Yaman ,  Eduardo Mateo Rodriguez ,  Shinsuke Fujisawa ,  Hussam Batshon ,  Kohei Nakamura ,  Takanori Inoue ,  Yoshihisa Inada ,  Takaaki Ogata

IPC: G01M11/00

Abstract: Aspects of the present disclosure describe a method for estimating mode field distribution in optical fibers from guided acoustic-wave Brillouin scattering wherein light for which the optical mode-field distribution is determined remains in the optical fibers and the distribution is made for light inside the fiber, and not at a fiber/air interface or other perturbation points to the fiber resulting in a more accurate representation of the optical mode-field distribution in the fiber. Since light is always in the fiber during the determination, no complicated fiber preparation steps or procedures are required and the mode-field distribution is determined as an average distribution along the length of the fiber under test.