High resolution optical fault locator
    31.
    发明授权
    High resolution optical fault locator 失效
    高分辨率光学故障定位器

    公开(公告)号:US5008545A

    公开(公告)日:1991-04-16

    申请号:US425770

    申请日:1989-10-23

    IPC分类号: G01M11/00

    CPC分类号: G01M11/3109

    摘要: A high resolution optical fault locator for single mode applications uses a high power, short wavelength laser for generating narrow optical pulses that are launched into a single mode fiber under test. The laser output is coupled to a multimode coupler whose output is coupled to a multimode output fiber. The multimode output fiber is fusion spliced with a single mode fiber, which is coupled to a front panel connector for connecting the fiber under test to the fault locator. An optical detector that is compatible with the output laser is coupled to the multimode coupler to receive the reflected light from the fiber under test. The high resolution fault locator is useful in examining single mode local area networks where many closely spaced fiber connections exist.

    摘要翻译: 用于单模应用的高分辨率光学故障定位器使用大功率短波长激光器来产生发射到被测单模光纤的窄光脉冲。 激光输出耦合到多模耦合器,其输出耦合到多模输出光纤。 多模输出光纤与单模光纤进行熔接,该光纤耦合到前面板连接器,用于将被测光纤连接到故障定位器。 与输出激光器兼容的光学检测器耦合到多模耦合器以接收来自被测光纤的反射光。 高分辨率故障定位器可用于检查存在许多紧密间隔的光纤连接的单模局域网。

    Laser pigtail assembly and method of manufacture
    32.
    发明授权
    Laser pigtail assembly and method of manufacture 失效
    激光尾纤组件及其制造方法

    公开(公告)号:US4969702A

    公开(公告)日:1990-11-13

    申请号:US355586

    申请日:1989-05-22

    IPC分类号: G02B6/42

    CPC分类号: G02B6/4204

    摘要: An optical pigtail assembly is described wherein the focusing lens through which the laser diode output passes has its planar surface facing the laser instead of its convex surface. This configuration provides greater coupling efficiency when launching 850 nm light from the laser into an optical fiber. In the method of manufacturing the optical pigtail assembly, ultraviolet, UV, cured epoxy is used to bond the elements of the pigtail assembly together. The use of UV cured epoxy overcomes environmental problems and high capital equipment costs associated with other types of laser pigtail assembly manufacturing methods.

    Collection optics for LED array with offset hemispherical or faceted surfaces
    33.
    发明授权
    Collection optics for LED array with offset hemispherical or faceted surfaces 有权
    用于LED阵列的采集光学元件,具有偏移半球形或刻面

    公开(公告)号:US08523387B2

    公开(公告)日:2013-09-03

    申请号:US12893405

    申请日:2010-09-29

    IPC分类号: F21V1/00

    摘要: An array of LEDs is provided having a lens array for collecting divergent light from each LED. Each lens in the array is associated with a respective LED and has a compound shape including a curved surface that may be spherical or may have an offset aspherical shape. The curved surfaces are centered about each side of its associated LED. The lens may alternatively include faceted surfaces that approximate the curved lens surface.

    摘要翻译: LED阵列设置有用于收集来自每个LED的发散光的透镜阵列。 阵列中的每个透镜与相应的LED相关联并且具有包括可以是球形或可以具有偏移非球面形状的曲面的复合形状。 曲面围绕其相关LED的每一侧居中。 透镜可以可选地包括近似弯曲透镜表面的刻面。

    LED ARRAY HAVING ARRAY-BASED LED DETECTORS
    34.
    发明申请
    LED ARRAY HAVING ARRAY-BASED LED DETECTORS 有权
    LED阵列具有基于阵列的LED检测器

    公开(公告)号:US20110012514A1

    公开(公告)日:2011-01-20

    申请号:US12891649

    申请日:2010-09-27

    IPC分类号: H05B37/02 H01L31/12

    CPC分类号: H05B33/0851 H05B33/0827

    摘要: The present invention provides an optical system having an array of light emitting semiconductor devices to performing an operation that have multiple characteristics associated with performing the operation. The array includes at least one detector located within the array to selectively monitor multiple characteristics of the light emitting semiconductor devices and is configured to generate a signal corresponding to the selected characteristic. A controller is configured to control the light emitting semiconductor devices in response to the signal from the at least one detector. At least one of the multiple characteristics may be concentrated at an area of the array and the at least one detector may be located within the array at the area of the array to selectively monitor characteristic that is concentrated at the area of the array.

    摘要翻译: 本发明提供了一种具有发光半导体器件阵列的光学系统,以执行具有与执行该操作相关联的多个特性的操作。 阵列包括位于阵列内的至少一个检测器,以选择性地监测发光半导体器件的多个特性,并且被配置为产生对应于所选择的特性的信号。 控制器被配置为响应于来自至少一个检测器的信号来控制发光半导体器件。 多个特征中的至少一个可以集中在阵列的一个区域,并且至少一个检测器可以位于阵列内的阵列区域内,以选择性地监视集中在阵列区域的特性。

    METHODS AND SYSTEMS RELATING TO LIGHT SOURCES FOR USE IN INDUSTRIAL PROCESSES
    36.
    发明申请
    METHODS AND SYSTEMS RELATING TO LIGHT SOURCES FOR USE IN INDUSTRIAL PROCESSES 有权
    与工业过程中使用的光源相关的方法和系统

    公开(公告)号:US20090233003A1

    公开(公告)日:2009-09-17

    申请号:US11813090

    申请日:2005-12-30

    IPC分类号: C23C16/48 B05D3/06 B05C21/00

    CPC分类号: G11B7/26 Y10S362/80

    摘要: System and methods are disclosed in connection with a reaction at or below the surface of a work object, in the context of a fluid flow fostering the reaction. In some example embodiments, the reaction is fostered by (1) creating fluid flow of an inerting fluid over a surface during exposure of the surface to a predetermined type of light, (2) creating fluid flow comprising a reactive species that reacts with another species at or below the work surface in a predetermined manner and/or (3) creating a fluid flow comprising a catalytic species that catalyzes a reaction in a predetermined manner, e.g., during exposure of the surface to a predetermined type of light. In some example embodiments, a light source is employed that comprises a solid-state light source, e.g., a dense array of solid-state light sources. In at least one of such example embodiments, the reaction is a photoreaction associated with the light source.

    摘要翻译: 关于在促进反应的流体流动的上下文中与工作对象的表面或其下方的反应有关的系统和方法被公开。 在一些示例性实施方案中,通过(1)在将表面暴露于预定类型的光时在表面上产生惰性流体的流体流动,(2)产生包含与另一种物质反应的反应性物质的流体流 以预定的方式在工作表面处或下方,和/或(3)产生包含以预定方式催化反应的催化物质的流体流,例如在将表面暴露于预定类型的光时。 在一些示例性实施例中,采用包括固态光源(例如,固态光源的密集阵列)的光源。 在这样的示例性实施方案中的至少一个中,反应是与光源相关联的光反应。

    Single sweep measurement of multiple optical characteristics
    37.
    发明授权
    Single sweep measurement of multiple optical characteristics 失效
    单次扫描测量多种光学特性

    公开(公告)号:US06888625B2

    公开(公告)日:2005-05-03

    申请号:US10417742

    申请日:2003-04-16

    IPC分类号: G01M11/00 G01N21/00

    CPC分类号: G01M11/33 G01M11/337

    摘要: A method of measuring multiple optical characteristics of an optical device during a single sweep of a swept wavelength optical system cyclically changes an input state of polarization on consecutive optical frequency increments of an optical signal within the wavelength range of the swept wavelength optical system. From the measured output states of polarization a wavelength-dependent Jones matrix is calculated, and from the Jones matrix the multiple optical characteristics are determined, which characteristics may include PDL and DGD.

    摘要翻译: 在扫描波长光学系统的单次扫描期间测量光学器件的多个光学特性的方法在扫描波长光学系统的波长范围内周期性地改变光信号的连续光学频率增量上的输入偏振状态。 从测量的偏振态输出状态计算波长依赖的琼斯矩阵,并且从琼斯矩阵确定多个光学特性,哪些特征可以包括PDL和DGD。

    Real-time wavelength calibration for swept lasers

    公开(公告)号:US06570894B2

    公开(公告)日:2003-05-27

    申请号:US09774433

    申请日:2001-01-30

    IPC分类号: H01S313

    CPC分类号: G01J9/00 H01S3/0014

    摘要: A real-time wavelength calibration scheme for a swept laser generates an electrical signal from a swept optical output of the swept laser that is cyclical with respect to the wavelength of the swept optical output over a defined range of wavelengths. The point on the electrical signal at any given time provides an accurate phase for the swept optical output at that point. The electrical signal in turn is calibrated by generating calibration references from the swept optical output using known absorption lines within the defined range of interest. The wavelength of the swept laser is calibrated as a function of a reference wavelength from the known absorption lines and the phase at the given point.

    Optical time domain reflectometer with bandwidth correction
    39.
    发明授权
    Optical time domain reflectometer with bandwidth correction 失效
    光学时域反射仪带宽校正

    公开(公告)号:US5963313A

    公开(公告)日:1999-10-05

    申请号:US79887

    申请日:1998-05-15

    IPC分类号: G01M11/00 G01N21/00

    CPC分类号: G01M11/3145

    摘要: An optical time domain reflectometer (OTDR) is treated as a linear shift-invariant system modeled as a ideal resistive-capacitive network. A step pulse is applied to a fiber under test and the return optical energy from the fiber under test is converted to signal samples representative of the return optical energy. The signal samples are processed in a controller for producing step impulse stimulus signal samples corrected for the bandwidth limited system response of the optical time domain reflectometer by modeling the OTDR as an exponential linear shift-invariant system that includes the optical transmitter, optical receiver and the fiber under test. The controller takes the time derivative of the step impulse stimulus signal samples for generating signal samples representative of the impulse response for the fiber under test. Standard OTDR interrogating pulses may be used to produce signal samples representing the ideal impulse response with bandwidth correction over the region of the pulsewidth for improved event dead zone accuracy.

    摘要翻译: 光时域反射计(OTDR)被视为一个建模为理想电阻电容网络的线性偏移不变系统。 步进脉冲被施加到被测光纤上,来自被测光纤的返回光能被转换成表示返回光能的信号样本。 信号样本在控制器中进行处理,用于通过将OTDR建模为指数线性移位不变系统来产生针对光时域反射计的带宽限制系统响应而校正的步进脉冲刺激信号样本,该系统包括光发射机,光接收机和 被测纤维。 控制器采用步进脉冲刺激信号样本的时间导数,以产生表示被测光纤的脉冲响应的信号样本。 可以使用标准OTDR询问脉冲来产生表示理想脉冲响应的信号样本,并且在脉冲宽度区域上进行带宽校正,以改善事件死区精度。

    Active APD gain control for an optical receiver
    40.
    发明授权
    Active APD gain control for an optical receiver 失效
    光接收器的主动APD增益控制

    公开(公告)号:US5929982A

    公开(公告)日:1999-07-27

    申请号:US794799

    申请日:1997-02-04

    IPC分类号: H03G1/00 H03G3/24 G01N21/00

    CPC分类号: H03G1/0047 H03G3/24

    摘要: An active avalanche photo-diode, APD, gain control circuit for use in an optical receiver includes a bias generator for varying the bias on a variable gain APD in response to bias control values generated by a controller. The controller receives the output of the optical receiver and determines the system noise of the receiver for the various bias control values. The system noise is compared to a threshold value for establishing the optimum bias for optimum gain of the APD. The gain control circuit is useable in an optical receiver in an optical time domain reflectometer, OTDR, for increasing the dynamic range of the OTDR.

    摘要翻译: 用于光接收器的主动雪崩光电二极管APD增益控制电路包括偏置发生器,用于响应于由控制器产生的偏置控制值来改变可变增益APD上的偏置。 控制器接收光接收器的输出,并确定接收机的各种偏置控制值的系统噪声。 将系统噪声与阈值进行比较,以建立用于APD的最佳增益的最佳偏置。 增益控制电路可用于光时域反射计(OTDR)的光接收机,用于增加OTDR的动态范围。