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89 条记录 (耗时 0.032 秒)

    Coarse spectrometer with a grating
    81.
    发明授权
    Coarse spectrometer with a grating 失效
    粗光谱仪带光栅

    公开(公告)号：US07259904B2

    公开(公告)日：2007-08-21

    申请号：US11263289

    申请日：2005-10-31

    申请人： Mark McDonald

    发明人： Mark McDonald

    IPC分类号： H04B10/12 ,  G01J3/18

    CPC分类号： G01J1/4257 ,  G01J3/0205 ,  G01J3/0256 ,  G01J3/0259 ,  G01J9/00

    摘要： A quasi-monochromatic light beam carrier for a particular telecommunication channel is likely to experience drift because of age, temperature, or other factors, and may cause the centroid wavelength of the carrier to shift. Temperature adjustments by wavelength lockers to compensate for drift on one channel may affect the performance of other channels. Embodiments of the present invention couple a quasi-monochromatic light beam through a substrate-based grating, diffract the light beam from the edge of the substrate to free space, and detect the light beam from free space at a position detector to determine the centroid wavelength based on a position of the light beam incident on the detector. The diffracted light beam may be reflected within the substrate a number of times prior to exiting the substrate towards the detector.

    摘要翻译： 用于特定电信信道的准单色光束载波可能由于年龄，温度或其他因素而经历漂移，并且可能导致载波的质心波长偏移。 通过波长锁定器对一个通道上的漂移进行温度调节可能会影响其他通道的性能。 本发明的实施例将准单色光束通过基于基板的光栅耦合，将光束从基板的边缘衍射到自由空间，并且从位置检测器处的​​自由空间检测光束以确定质心波长 基于入射到检测器上的光束的位置。 在离开衬底朝向检测器之前，衍射光束可以在衬底内反射多次。

    Wavelength reference apparatus and method
    82.
    发明授权
    Wavelength reference apparatus and method 有权

    公开(公告)号：US07120176B2

    公开(公告)日：2006-10-10

    申请号：US10173514

    申请日：2002-06-15

    申请人： Mark McDonald ,  Mark Rice ,  Andrew Daiber ,  William B. Chapman

    发明人： Mark McDonald ,  Mark Rice ,  Andrew Daiber ,  William B. Chapman

    IPC分类号： H01S3/13

    CPC分类号： G02B5/281 ,  G02B6/29358 ,  G02B6/4215 ,  H01S5/141

    摘要： Apparatus and methods usable for wavelength references and measurement of wavelength of a light beam. The apparatus comprise at least two wavelength reference or filter elements positioned in a light beam, each wavelength reference element having a different free spectral range and operable to define a joint free spectral range, and a detector positioned in the beam after the wavelength reference elements. The joint free spectral range provided by the multiple wavelength reference elements results in a joint transmission peak that is centered at a unique wavelength, and maximum optical power detectable from the beam by the detector occurs at the center wavelength of the joint transmission peak.

    Thermal gradient prism for active beam steering
    83.
    发明申请
    Thermal gradient prism for active beam steering 失效
    用于主动光束转向的热梯度棱镜

    公开(公告)号：US20060133761A1

    公开(公告)日：2006-06-22

    申请号：US11338930

    申请日：2006-01-25

    申请人： Mark McDonald

    发明人： Mark McDonald

    IPC分类号： G02B6/00

    CPC分类号： G02B6/266 ,  G02B5/04 ,  G02F1/0147 ,  G02F2203/48

    摘要： A variable optical attenuator (VOA) for use in an optical fiber communication system has a substrate, a thermal gradient prism and a heating element deposited on the prism. Heat is applied to the thermal gradient prism through the heating element. An optical signal is input into the prism via an optical signal input source. The optical signal traveling through the prism may be deflected due to a thermal gradient of the prism. The deflected optical signal is output into an optical signal output carrying medium. An optical signal strength measuring apparatus may measure a parameter related to the strength of the optical signal output into the optical signal output carrying medium.

    摘要翻译： 用于光纤通信系统的可变光衰减器（VOA）具有沉积在棱镜上的衬底，热梯度棱镜和加热元件。 通过加热元件对热梯度棱镜施加热量。 光信号通过光信号输入源输入棱镜。 穿过棱镜的光信号可能由于棱镜的热梯度而偏转。 偏转的光信号被输出到光信号输出承载介质中。 光信号强度测量装置可以测量与输出到光信号输出载体中的光信号的强度有关的参数。

    Micromachined pellicle splitters and tunable laser modules incorporating same
    85.
    发明授权
    Micromachined pellicle splitters and tunable laser modules incorporating same 失效
    微加工防护薄膜分离器和结合相同的可调激光模块

    公开(公告)号：US06859330B2

    公开(公告)日：2005-02-22

    申请号：US10454071

    申请日：2003-06-04

    申请人： William J. Kozlovsky ,  Mark McDonald

    发明人： William J. Kozlovsky ,  Mark McDonald

    IPC分类号： G02B27/14 ,  G02B27/12 ,  G02B1/10

    CPC分类号： G02B27/1073 ,  G02B27/108 ,  G02B27/142

    摘要： A micromachined pellicle beam splitter and method of manufacture thereof are disclosed. In one embodiment, the beam splitter includes a silicon frame with a silicon nitride membrane attached to the frame and covering an opening through the frame. Other materials may be utilized, however, the coefficient of thermal expansion (CTE) of the membrane should be greater than that of the frame. The beam splitter may be manufactured by coating a silicon substrate with a layer of silicon nitride, patterning an opposite side of the silicon substrate with a photoresist or a metallic layer to define an opening an etching an opening through the substrate to the silicon nitride with either a dry etch or wet etch technique. An improved tunable laser module incorporating the micromachined pellicle beam splitter and a method of tuning a laser diode are also disclosed.

    摘要翻译： 公开了一种微加工防护薄膜分束器及其制造方法。 在一个实施例中，分束器包括硅框架，其具有附接到框架并覆盖通过框架的开口的氮化硅膜。 可以使用其它材料，然而，膜的热膨胀系数（CTE）应该大于框架的热膨胀系数（CTE）。 分束器可以通过用氮化硅层涂覆硅衬底来制造，用光致抗蚀剂或金属层构图硅衬底的相对侧，以限定开口，通过衬底蚀刻通过衬底到氮化硅的开口，或者 干蚀刻或湿蚀刻技术。 还公开了一种结合有微加工防护薄膜分束器的改进的可调激光器模块和调谐激光二极管的方法。

    Anti-reflective (AR) coating for high index gain media
    86.
    发明申请
    Anti-reflective (AR) coating for high index gain media 有权
    用于高折射率增益介质的抗反射（AR）涂层

    公开(公告)号：US20050031010A1

    公开(公告)日：2005-02-10

    申请号：US10625950

    申请日：2003-07-23

    申请人： Mark McDonald

    发明人： Mark McDonald

    IPC分类号： H01S5/028 ,  H01S3/08

    CPC分类号： H01S5/0281 ,  H01S5/0285 ,  H01S5/0287

    摘要： Anti-reflective coatings may be used on laser high index gain media to mitigate reflection. An absentee layer may be used to compliment the antireflective coating to improve its antireflective performance over a broader range of wavelengths. The absentee layer comprises a material having a higher index of refraction than that of the gain media and has a thickness corresponding to multiple halfwave thicknesses related to the center wavelength output by the laser.

    摘要翻译： 抗反射涂层可用于激光高折射率增益介质以减轻反射。 可以使用缺席层来补偿抗反射涂层，以在更宽的波长范围内提高其抗反射性能。 缺席层包括具有比增益介质更高的折射率的材料，并且具有对应于与激光输出的中心波长相关的多个半波厚度的厚度。

    Thermal tuning of a laser using doped silicon etalon
    87.
    发明申请
    Thermal tuning of a laser using doped silicon etalon 失效
    使用掺杂硅标准具对激光进行热调谐

    公开(公告)号：US20050012984A1

    公开(公告)日：2005-01-20

    申请号：US10606637

    申请日：2003-06-25

    申请人： Balaji Venkateshwaran ,  Mark McDonald

    发明人： Balaji Venkateshwaran ,  Mark McDonald

    IPC分类号： G02F1/01 ,  G02F1/21 ,  H01S3/00 ,  H01S5/028 ,  H01S5/14

    CPC分类号： H01S5/141 ,  G02F1/0147 ,  G02F1/218 ,  H01S5/028

    摘要： In embodiments of the invention, a wavelength-selective device is doped with n-type or p-type material to make the single-crystal silicon in the active region of the device electrically conductive. An electrically conductive and thermally conductive active region allows an external heater such as a platinum heater strip to be eliminated and current to be applied directly to the single-crystal silicon to thermally tune the laser.

    摘要翻译： 在本发明的实施例中，波长选择性器件掺杂有n型或p型材料，以使器件的有源区中的单晶硅导电。 导电和导热的有源区域允许消除诸如铂加热器条的外部加热器，并将电流直接施加到单晶硅以热激发激光。

    Tunable laser operation with locally commensurate condition
    88.
    发明授权
    Tunable laser operation with locally commensurate condition 有权
    可调谐的激光操作与本地相称的条件

    公开(公告)号：US06665321B1

    公开(公告)日：2003-12-16

    申请号：US10335815

    申请日：2002-12-31

    申请人： Sergei L. Sochava ,  Andrew Daiber ,  Mark McDonald

    发明人： Sergei L. Sochava ,  Andrew Daiber ,  Mark McDonald

    IPC分类号： H01S310

    CPC分类号： H01S5/141 ,  H01S5/02248 ,  H01S5/0617 ,  H01S5/06804 ,  H01S5/06837 ,  H01S5/0687 ,  H01S5/101 ,  H01S5/142

    摘要： A method for selecting free spectral ranges (FSR) of intra-cavity optics to optimize reliability of the channel switching mechanism and corresponding apparatus. In particular, the optimal relationship between the FSR of the internal etalon and the FSR of the laser cavity is derived. For the external cavity diode lasers (ECDL) the optimal relationship between the FSR of the internal etalon and the FSR of the gain chip is also derived. Equations are derived for selecting free spectral ranges of various optical cavities so as to create a locally commensurate condition under which the relative position of the lasing mode with respect to the transmission peak of the laser's tunable filter (e.g., etalon plus channel selector) does not change when the laser hops between adjacent channels.

    摘要翻译： 一种用于选择腔内光学器件的自由光谱范围（FSR）以优化通道切换机构和相应设备的可靠性的方法。 特别地，推导了内标准器的FSR与激光腔的FSR之间的最佳关系。 对于外腔二极管激光器（ECDL），也推导了内部标准具的FSR与增益芯片的FSR之间的最佳关系。 导出用于选择各种光学腔的自由光谱范围的等式，以便产生局部相应的条件，在该条件下，激光模式相对于激光器可调谐滤光器（例如，标准具加频道选择器）的透射峰值的相对位置不在 激光在相邻通道之间跳跃时发生变化。