Frequency routing device having a wide and substantially flat passband
    32.
    发明公开
    Frequency routing device having a wide and substantially flat passband 失效
    频率路由设备具有宽且基本平坦的通带

    公开(公告)号:EP0702253A2

    公开(公告)日:1996-03-20

    申请号:EP95305686.8

    申请日:1995-08-15

    申请人: AT&T Corp.

    发明人: Dragone, Corrado

    IPC分类号: G02B6/34

    摘要: An optical apparatus is provided that includes a first arrayed waveguide or Mach-Zehnder frequency routing device (10) having at least one input port (2) and P output ports, where P ≥ 2. A second frequency routing device (12) is also provided that has P input ports and at least one output port (4). P optical paths (14₁,14₂,...14 p ) couple the input port of the first frequency routing device to the output port of the second frequency routing device. To obtain a wide and flat passband the two frequency routers are combined in a way to compensate the respective wavelength shifts for each optical path. The transmission coefficients for the optical paths (14); between the routers equal to unity at distinct optical wavelengths and equal to half unity halfway between these distinct wavelengths.

    摘要翻译: 提供了一种光学设备,其包括具有至少一个输入端口(2)和P个输出端口的第一阵列波导或Mach-Zehnder频率路由设备(10),其中P≥2。第二频率路由设备(12)也是 前提是具有P个输入端口和至少一个输出端口(4)。 P光路(14 1,14 2,... 14 p)将第一频率路由设备的输入端口耦合到第二频率路由设备的输出端口。 为了获得宽而平坦的通带,两个频率路由器被组合以补偿每个光路的相应波长偏移。 光路(14)的传输系数; 在路由器之间在不同的光波长处等于1,并且等于这些不同波长之间的半单位。

    Frequency routing device having a wide and substantially flat passband
    33.
    发明公开
    Frequency routing device having a wide and substantially flat passband 失效
    Frequenzweglenkungsvorrichtung宽带和平面基本上通带。

    公开(公告)号:EP0681195A3

    公开(公告)日:1996-01-24

    申请号:EP95302579.8

    申请日:1995-04-19

    申请人: AT&T Corp.

    发明人: Dragone, Corrado

    IPC分类号: G02B6/12 G02B6/293 G02B6/34

    CPC分类号: G02B6/12016

    摘要: The present invention relates to an optical apparatus that includes a first plurality of waveguides and a first free space region connected to the first plurality of waveguides: A second plurality of waveguides is connected to the first free space region. An optical grating is connected to the second plurality of waveguides and includes a plurality of unequal length waveguides. A third plurality of waveguides is connected to the optical grating and a second free space region is connected to the third plurality of waveguides. At least one waveguide is connected to the second free space region. The first plurality of waveguides includes at least two adjacent waveguides having ends remote from the first free space region. A Y-branch coupler connected to the remote ends of the two adjacent waveguides. The adjacent waveguides are located a predetermined distance apart along the first free space region to produce a specifiable passband width.

    Rapidly tunable integrated laser
    34.
    发明公开
    Rapidly tunable integrated laser 失效
    可快速调谐的集成激光器

    公开(公告)号:EP0612125A2

    公开(公告)日:1994-08-24

    申请号:EP94300938.1

    申请日:1994-02-09

    申请人: AT&T Corp.

    摘要: A monolithically integrated laser which is rapidly tunable over a wide optical frequency range comprises a frequency router formed in a semiconductive wafer defining a tuned cavity. A control circuit applies electrical energy to predetermined controllably transmissive waveguides connecting the frequency routing device with reflective elements defined in the wafer. This tunes the laser to a desired one of a plurality of optical frequencies. Application of such electrical energy creates frequency selective pathways through the wafer able to support selected lasing frequencies. This laser is economical to construct and is useful in high capacity, high speed optical communications networks.

    摘要翻译: 在宽光学频率范围内可快速调谐的单片集成激光器包括形成在限定调谐腔的半导体晶片中的频率路由器。 控制电路将电能施加到预定的可控传输波导,该波导将频率路由设备与限定在晶片中的反射元件相连接。 这将激光器调谐到多个光频中的期望的一个。 这种电能的应用产生了穿过晶片的频率选择性路径,能够支持选定的激光频率。 这种激光器构造经济,并且在高容量,高速光通信网络中有用。

    A periodic array with a nearly ideal element pattern
    35.
    发明公开
    A periodic array with a nearly ideal element pattern 失效
    Periodische Gruppe mit einem fast idealen Elementendiagramm。

    公开(公告)号:EP0430516A2

    公开(公告)日:1991-06-05

    申请号:EP90312521.9

    申请日:1990-11-16

    申请人: AT&T Corp.

    发明人: Dragone, Corrado

    IPC分类号: H01Q21/06 H01Q25/04

    CPC分类号: H01Q25/04 H01Q21/064

    摘要: A waveguide array comprising a plurality of waveguides which are each outwardly tapered at the aperture of the my in accordance with a predetermined criteria chosen to increase waveguide efficiency. Thc tapering serves to gradually transform a fundamental Bloch mode, propagating through the waveguide array, into a plane wave in a predetermined direction, and then to launch the plane wave into free space in the predetermined direction. In another embodiment, the waveguides are positioned relative to one another in order to satisfy the predetermined criteria.

    摘要翻译: 一种波导阵列,其包括多个波导,每个波导根据为了增加波导效率而选择的预定标准,在我的孔处向外逐渐变细。 锥形渐变用于将基本的Bloch模式逐渐变换,通过波导阵列传播到预定方向的平面波中,然后将平面波发射到预定方向的自由空间中。 在另一个实施例中,波导相对于彼此定位,以便满足预定标准。