公开(公告)号：WO2015116849A1

公开(公告)日：2015-08-06

申请号：PCT/US2015/013583

申请日：2015-01-29

Applicant: NLIGHT PHOTONICS CORPORATION

Inventor： KOPONEN, Joona ,  YE, Changgeng ,  KIMMELMA, Ossi

IPC: C03B37/028 ,  G02B6/028 ,  H01S3/067

CPC classification number: G02B6/0286 ,  C03B37/01222 ,  C03B37/0253 ,  C03B37/02745 ,  C03B37/02763 ,  C03B37/028 ,  C03B2203/12 ,  C03B2203/20 ,  C03B2203/32 ,  C03B2203/34 ,  C03B2205/07 ,  G02B6/02 ,  G02B6/02009 ,  G02B6/02338 ,  G02B6/028 ,  G02B6/14

Abstract: Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides. In one representative embodiment, an optical waveguide comprises a core that extends along a propagation axis and has a refractive index profile that varies angularly about the propagation axis. The optical waveguide can also comprise a cladding disposed about the core and extending along the propagation axis. The refractive index profile of the core can vary angularly along a length of the propagation axis.

Abstract translation: 具有关于芯的传播轴成角度变化的折射率分布的光波导芯可以提供比常规波导更大的芯直径的单模操作。 在一个代表性实施例中，光波导包括沿着传播轴延伸并且具有围绕传播轴成角度变化的折射率分布的芯。 光波导还可以包括围绕芯并且沿着传播轴线延伸的包层。 芯的折射率分布可以沿着传播轴的长度成角度变化。

公开(公告)号：WO2014145862A2

公开(公告)日：2014-09-18

申请号：PCT/US2014/030698

申请日：2014-03-17

Applicant: NLIGHT PHOTONICS CORPORATION

Inventor： YE, Changgeng ,  SOSNOWKI, Thomas, S. ,  KOPONEN, Joona

IPC: G06F1/20

CPC classification number: G02B6/02 ,  G02B6/036 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/09415 ,  H01S3/1618 ,  H01S3/302

Abstract: Optical fibers are provided for modal discrimination which include a central core and a cladding disposed about the central core. The central core has a non-circular and non- elliptical cross-section, and it is rotated about a central axis of the optical fiber along the length of the optical fiber at a selected pitch resulting in the capability of a fundamental mode beam output for large core sizes. An optical system includes a seed optical source configured to provide a seed beam and an optical amplifier configured to receive and amplify the seed beam. The optical amplifier also includes an active optical fiber having a large mode area non-circular and non-elliptical core rotated about a central axis of said active optical fiber to provide modal discrimination and fundamental mode output.

Abstract translation: 提供用于模式鉴别的光纤，其包括围绕中心芯设置的中心芯和包层。 中心芯具有非圆形和非椭圆形的横截面，并且以选定的间距沿着光纤的长度围绕光纤的中心轴旋转，导致基本模式光束输出的能力 大核心尺寸。 光学系统包括配置成提供种子光束的种子光源和被配置为接收和放大种子束的光学放大器。 光放大器还包括有源光纤，其具有围绕所述有源光纤的中心轴旋转的大模式区非圆形和非椭圆形芯，以提供模态鉴别和基本模式输出。