Chromatic dispersion compensation device having an array of micromirrors
    4.
    发明授权
    Chromatic dispersion compensation device having an array of micromirrors 有权
    具有微镜阵列的色散补偿装置

    公开(公告)号:US06934069B2

    公开(公告)日:2005-08-23

    申请号:US10298264

    申请日:2002-11-15

    摘要: A chromatic dispersion compensation device selectively delays a respective portion of spectral sections of each respective optical channel of an optical WDM input signal to compensate each optical channel for dispersion compensation, and includes a spatial light modulator having a micromirror device with a two-dimensional array of micromirrors. The micromirrors tilt or flip between first and second positions in a “digital” fashion in response to a control signal provided by a controller in accordance with a switching algorithm and an input command. A collimator, diffraction gratings, and Fourier lens collectively collimate, disperse and focus the optical input channels onto the array of micromirrors. Each optical channel is focused onto micromirrors of the micromirror device, which effectively pixelates the optical channels. To compensate an optical channel for chromatic dispersion, a portion of the spectral sections of each channel is delayed a desired time period by tilting an array of mirrors (i.e., spectral array) disposed in each spectral section at different spatial positions on the micromirror device.

    摘要翻译: 色散补偿装置选择性地延迟光WDM输入信号的每个相应光通道的光谱部分的相应部分以补偿每个光信道用于色散补偿,并且包括空间光调制器,具有具有二维阵列的微镜器件 微镜。 响应于由控制器根据切换算法和输入命令提供的控制信号,微镜以“数字”方式在第一和第二位置之间倾斜或翻转。 准直仪,衍射光栅和傅立叶透镜共同准直,分散并将光学输入通道聚焦到微镜阵列上。 每个光通道聚焦到微镜器件的微镜上,这有效地使光通道成像。 为了补偿用于色散的光信道,通过在微镜装置上的不同空间位置倾斜设置在每个光谱部分中的反射镜阵列(即,光谱阵列),将每个通道的光谱部分的一部分延迟期望的时间段。

    Optical spectrum analyzer
    5.
    发明授权
    Optical spectrum analyzer 有权
    光谱分析仪

    公开(公告)号:US07253897B2

    公开(公告)日:2007-08-07

    申请号:US10800320

    申请日:2004-03-11

    IPC分类号: G01J3/06 G01J3/18 G01J3/30

    摘要: An optical spectrum analyzer (OSA) 10 sequentially or selectively samples (or filters) a spectral band(s) 11 of light from a broadband optical input signal 12 and measures predetermined optical parameters of the optical signal (e.g., spectral profile) of the input light 12. The OSA 10 is a free-space optical device that includes a collimator assembly 15, a diffraction grating 20 and a mirror 22. A launch pigtail emits into free space the input signal through the collimator assembly 15 and onto the diffraction grating 20, which separates or spreads spatially the collimated input light, and reflects the dispersed light onto the mirror 22. A λ/4 plate 26 is disposed between the mirror 22 and the diffraction grating 20. The mirror reflects the separated light back through the λ/4 plate 26 to the diffraction grating 20, which reflects the light back through the collimating lens 18. The lens 18 focuses spectral bands of light (λ1–λN) at different focal points in space. One of the spectral bands 11 is focused onto a receive pigtail 28, which then propagates to a photodetector 30. A pivoting mechanism 34 pivots the diffraction grating 20 or mirror 22 about a pivot point 36 to sequentially or selectively focus each spectral band 11 to the receive pigtail 28. A position sensor 42 detects the displacement of the diffraction grating 24 or mirror.

    摘要翻译: 光谱分析仪(OSA)10顺序地或选择性地从宽带光输入信号12采样(或滤波)光谱带11,并且测量输入的光信号的光学参数(例如,光谱分布) 光12。 OSA 10是包括准直器组件15,衍射光栅20和反射镜22的自由空间光学装置。 发射尾纤通过准直器组件15将输入信号发射到自由空间中,并在衍射光栅20上分散或扩展空间上准直的输入光,并将分散的光反射到反射镜22上。 λ/ 4板26设置在反射镜22和衍射光栅20之间。 反射镜通过λ/ 4板26将分离的光反射回到衍射光栅20,衍射光栅20将光反射通过准直透镜18。 透镜18在空间中的不同焦点处聚焦光的光谱带(λ1 SUB-N N N)。 光谱带11中的一个聚焦在接收尾纤28上,接收引线28然后传播到光电检测器30。 枢转机构34围绕枢转点36枢转衍射光栅20或反射镜22,以顺序地或选择性地将每个光谱带11聚焦到接收尾纤28。 位置传感器42检测衍射光栅24或反射镜的位移。

    Optical grating-based filter
    8.
    发明授权
    Optical grating-based filter 有权
    基于光栅的滤光片

    公开(公告)号:US06834142B2

    公开(公告)日:2004-12-21

    申请号:US10098890

    申请日:2002-03-15

    IPC分类号: G02B602

    摘要: An optical filter for filtering a spectral profile of an optical signal for providing an output signal having a desire gain profile, such as a flatten gain profile. The filter comprises an optical waveguide that includes a core disposed within a cladding having an outer dimension greater than 0.3 mm. A Bragg grating is imparted or written in the core of the waveguide that attenuates the received optical input signal in accordance with a defined reflection or transmission filter profile. The Bragg grating may be a slanted grating. The filter profile is complementary to the spectral gain profile of the input signal to provide an output signal having a substantially flat spectral profile of a desired wavelength band. The cladding of the waveguide may have a mechanically advantageous outer geometry (e.g., a “dogbone” shape) for allowing an axial compressive force to tune the Bragg grating. The waveguide may be package within an athermal device, which tunes the grating to compensate for temperature dependent changes. Further, the waveguide may be packaged in a tuning device to selective tune the gratings to shift the center wavelength of the spectral profile of the filter, or to change the shape of the filter profile.

    摘要翻译: 一种滤光器,用于对光信号的光谱分布进行滤波,以提供具有期望增益分布的输出信号,例如平坦增益分布。 滤波器包括光波导,其包括设置在具有大于0.3mm的外部尺寸的包层内的芯。 布拉格光栅被传递或写入波导的核心,根据定义的反射或透射滤波器轮廓衰减接收到的光输入信号。 布拉格光栅可以是倾斜光栅。 滤波器曲线与输入信号的频谱增益分布互补,以提供具有期望波长带的基本上平坦的谱分布的输出信号。 波导的包层可以具有机械有利的外部几何形状(例如,“狗骨”形状),用于允许轴向压缩力调谐布拉格光栅。 波导可以封装在无热器件中,其调谐光栅以补偿温度依赖的变化。 此外,波导可以封装在调谐装置中以选择性调谐光栅以移动滤光器的光谱分布的中心波长,或者改变滤光片的形状。

    Method and apparatus for drug product tracking using encoded optical identification elements
    9.
    发明授权
    Method and apparatus for drug product tracking using encoded optical identification elements 有权
    使用编码的光学识别元件的药物产品跟踪的方法和装置

    公开(公告)号:US07619819B2

    公开(公告)日:2009-11-17

    申请号:US11187262

    申请日:2005-07-21

    IPC分类号: G02B5/18

    摘要: A method and apparatus for drug product tracking (or other pharmaceutical, health care or cosmetics products, and/or the packages or containers they are supplied with) using diffraction grating-based encoded optical identification elements includes an optical substrate having at least one diffraction grating disposed therein. The encoded element may be used to label any desired item, such as drugs or medicines, or other pharmaceutical or health care products or cosmetics. The label may be used for many different purposes, such as for sorting, tracking, identification, verification, authentication, anti-theft/anti-counterfeit, security/anti-terrorism, or for other purposes.

    摘要翻译: 使用基于衍射光栅的编码的光学识别元件的药物产品跟踪的方法和装置(或其他药物,保健或化妆品产品和/或其提供的包装或容器)包括具有至少一个衍射光栅 在其中。 所编码的元件可用于标记任何所需物品,例如药物或药物,或其他药物或保健产品或化妆品。 该标签可用于许多不同的目的,例如用于分类,跟踪,识别,验证,认证,防盗/防伪,安全/反恐,或用于其他目的。

    Optical channel monitor
    10.
    发明授权
    Optical channel monitor 有权
    光通道监视器

    公开(公告)号:US07463828B2

    公开(公告)日:2008-12-09

    申请号:US10159370

    申请日:2002-05-31

    IPC分类号: G02B6/26 H01S3/08 G01J3/18

    摘要: An optical channel monitor is provided that sequentially or selectively filters an optical channel(s) 11 of light from a (WDM) optical input signal 12 and senses predetermined parameters of the each filtered optical signal (e.g., channel power, channel presence, signal-noise-ratio). The OCM 10 is a free-space optical device that includes a collimator assembly 15, a diffraction grating 20 and a mirror 22. A launch pigtail emits into free space the input signal through the collimator assembly 15 and onto the diffraction grating 20, which separates spatially each of the optical channels 11 of the collimated light, and reflects the separated channels of light onto the mirror 22. A λ/4 plate 26 is disposed between the mirror 22 and the diffraction grating 20. The mirror reflects the separated light back through the λ/4 plate 26 to the diffraction grating 20, which reflects the channels of light back through the collimating lens 18. The lens 18 focuses each separated channel of light (λ1-λN) at a different focal point in space. One of the optical channels 11 is focused onto a receive pigtail 28, which then propagates to a photodetector 30. A pivoting mechanism 34 pivots the diffraction grating 20 or mirror 22 about a pivot point 36 to sequentially or selectively focus each optical channel 11 to the receive pigtail 28. A position sensor 42 detects the displacement of the diffraction grating 24 or mirror.

    摘要翻译: 提供了一种光通道监视器,其顺序地或选择性地对来自(WDM)光输入信号12的光的通道11进行滤波,并且感测每个滤波的光信号的预定参数(例如,信道功率,信道存在, 噪声比)。 OCM 10是包括准直器组件15,衍射光栅20和反射镜22的自由空间光学装置。发射尾纤通过准直器组件15和衍射光栅20将衍射光栅20发射到自由空间中,输入信号分离 准直光的每个光通道11,并将分离的光反射到反射镜22上.λ/ 4板26设置在反射镜22和衍射光栅20之间。反射镜将分离的光反射回 λ/ 4板26到衍射光栅20,其反射通过准直透镜18的光通道。透镜18将每个分离的光(λ1-λN)通道在空间中的不同焦点处聚焦。 光通道11中的一个被聚焦到接收引线28上,接收引线28然后传播到光电检测器30.枢转机构34围绕枢转点36枢转衍射光栅20或反射镜22,以顺序地或选择性地将每个光通道11聚焦到 接收尾纤28.位置传感器42检测衍射光栅24或反射镜的位移。