Apparatus and method for providing a single-mode grating-outcoupled surface emitting laser with detuned second-order outcoupler grating
    5.
    发明授权
    Apparatus and method for providing a single-mode grating-outcoupled surface emitting laser with detuned second-order outcoupler grating 失效
    用于提供具有失谐二阶外耦合光栅的单模光栅耦合表面发射激光器的装置和方法

    公开(公告)号:US07313159B2

    公开(公告)日:2007-12-25

    申请号:US11021535

    申请日:2004-12-23

    IPC分类号: H01S3/08 H01S5/00

    CPC分类号: H01S5/125 H01S5/1221 H01S5/18

    摘要: An improved grating-outcoupled surface-emitting semiconductor laser architecture is provided. A second-order grating is placed between two distributed Bragg reflector gratings. The period of the second order grating is positively or negatively detuned from the distributed Bragg reflector selected optical wavelength at which the laser operates. Detuning of the second-order grating towards shorter or longer wavelengths allows kink-free, linear LI curves light output versus forward current) for grating-outcoupled surface-emitting lasers. Due to the detuning of the outcoupler grating, the outcoupled radiation emits two beams that deviate slightly from the normal axis. A design point may then be chosen where the power outcoupled by symmetric and antisymmetric modes cross and where the outcoupled power is independent of the phase variation.

    摘要翻译: 提供了一种改进的光栅耦合表面发射半导体激光器结构。 二阶光栅放置在两个分布布拉格反射器光栅之间。 第二级光栅的周期与激光器所在的分布式布拉格反射体所选择的光波长正向或负向失谐。 对于光栅输出耦合的表面发射激光器,二阶光栅向更短或更长波长的去抖动允许无扭结的线性LI曲线光输出对正向电流)。 由于外耦合光栅的失谐,输出耦合的辐射发射出两个与正常轴线稍微偏离的光束。 然后可以选择设计点,其中通过对称和反对称模式交叠的功率相交,并且输出耦合功率独立于相位变化。

    PHOTONIC COUPLER
    7.
    发明申请
    PHOTONIC COUPLER 审中-公开
    光电耦合器

    公开(公告)号:US20090180731A1

    公开(公告)日:2009-07-16

    申请号:US12350007

    申请日:2009-01-07

    IPC分类号: G02B6/12

    摘要: A photonic coupler including a substrate, first and second waveguides disposed along a longitudinal direction of the substrate for propagation of respective first and second optical signals along the longitudinal direction, and a coupling region between the first and second waveguides and including a medium of a refractive index different from the first and second waveguides. The coupling region has a width extending from the first waveguide to the second waveguide and a breadth extending laterally to form an angle to the longitudinal direction for frustrated total internal reflection of the first optical signal at an interface between the coupling region and the first waveguide.

    摘要翻译: 一种光子耦合器,包括衬底,沿着衬底的纵向方向布置的第一和第二波导,用于沿着纵向方向传播相应的第一和第二光学信号,以及第一和第二波导之间的耦合区域,并且包括折射介质 指数与第一和第二波导不同。 耦合区域具有从第一波导延伸到第二波导的宽度,并且横向延伸的宽度以与纵向方向形成角度,用于在耦合区域和第一波导之间的界面处的第一光信号的受阻的全内反射。