公开(公告)号：US06198557B1

公开(公告)日：2001-03-06

申请号：US08882638

申请日：1997-06-25

申请人： Wolfgang Dultz ,  Hans Koops ,  Erna Frins ,  Gerald Meltz

发明人： Wolfgang Dultz ,  Hans Koops ,  Erna Frins ,  Gerald Meltz

IPC分类号： H04J1402

CPC分类号： H04L27/28 ,  H04B10/2504

摘要： A telecommunication system having frequency-dividing optical components where light pulses having different frequencies are coupled out of a optical fiber by fiber grating and/or photonic crystals and imaged by focusing elements outside of the optical fiber. The fiber grating for different frequencies can be used in a single period or in different periods disposed one after the other. The photonic crystals can be used at the optical fiber extremity or etched in a channel or trench in a glass fiber. Delay elements are added to ensure that different frequency light pulses are imaged simultaneously in a given and desired time relation as required for further parallel processing.

摘要翻译： 具有分频光学部件的电信系统，其中具有不同频率的光脉冲通过光纤光栅和/或光子晶体从光纤耦合出来，并通过光纤外部的聚焦元件成像。 用于不同频率的光纤光栅可以在一个接一个地布置的单个周期或不同周期中使用。 光子晶体可以在光纤末端使用或在玻璃纤维中的通道或沟槽中蚀刻。 添加延迟元件以确保按照进一步并行处理所需的给定和期望的时间关系同时对不同频率的光脉冲进行成像。

公开(公告)号：US5511083A

公开(公告)日：1996-04-23

申请号：US398206

申请日：1995-03-02

申请人： Francis X. D'Amato, deceased ,  Gary A. Ball ,  Gerald Meltz

发明人： Francis X. D'Amato, deceased ,  Gary A. Ball ,  Gerald Meltz

IPC分类号： H01S3/07 ,  H01S3/067 ,  H01S5/00 ,  H01S3/30

CPC分类号： H01S3/0675 ,  H01S3/06712

摘要： A polarized fiber laser source includes a fiber laser 10 comprising a pair of Bragg gratings 14,16 at opposite ends of a fiber laser cavity 18 which is doped with a rare-earth dopant so as to allow lasing to occur at a lasing wavelength .lambda..sub.L. A grating tap 26 is provided along a portion of the laser cavity 18 to couple-out a predetermined amount of light along one polarization, e.g., the "s" polarization", at the lasing wavelength .lambda..sub.L. This causes one polarization mode to experience more loss than the other, thereby allowing the fiber laser to lase only on the less lossy polarization mode and causing the laser output light 40 to be polarized only along such polarization.

摘要翻译： 偏振光纤激光源包括光纤激光器10，其包括在光纤激光器腔18的相对端处的一对布拉格光栅14,16，该布拉格光栅14,16掺杂有稀土掺杂剂，以便允许以激光波长λL发生激光 沿着激光腔18的一部分提供光栅丝锥26，以沿着激发波长λL的一个偏振（例如“s”极化）耦合预定量的光。这导致一个偏振模式 经历比另一个更多的损耗，从而允许光纤激光器仅在较小的有损偏振模式下发光，并且使激光输出光40仅沿着这种极化而极化。

公开(公告)号：US5016967A

公开(公告)日：1991-05-21

申请号：US456439

申请日：1989-12-26

申请人： Gerald Meltz ,  William W. Morey

发明人： Gerald Meltz ,  William W. Morey

IPC分类号： G02B6/04 ,  G02B6/02 ,  G02B6/122 ,  G02B6/34

CPC分类号： G02B6/29317 ,  G02B6/02085 ,  G02B6/29323 ,  G02B6/29334

摘要： An optical waveguide light redirecting arrangement includes an optical waveguide having at least two solid portions each of which guides light in a path along a longitudinal axis, with at least one grating region being embedded in each solid portion. Each grating region includes a multitude of grating elements extending at such identical longitudinal spacings and at such an identical angle relative to the longitudinal axis as to redirect light reaching the grating elements between the path of one and the path of the other of the waveguiding portions.

公开(公告)号：US4897622A

公开(公告)日：1990-01-30

申请号：US288291

申请日：1988-12-22

申请人： Peter K. Cheo ,  Gerald Meltz

发明人： Peter K. Cheo ,  Gerald Meltz

IPC分类号： G02B6/12 ,  G02F1/025 ,  G02F1/035 ,  G02F2/02

CPC分类号： G02F1/025 ,  G02F1/0356

摘要： A novel single sideband electro-optic modulator includes a planar waveguide structure allowing only circularly polarized optical and microwaves to propagate therein with equal phase velocities comprises a strip loaded GaAlAs/GaAs/GaAlAs structure with appropriate microstrip electrodes. The present modulator is readily fabricated using established microelectronic fabrication techniques and a modified MOCVD epitaxial growth process.

公开(公告)号：US4806012A

公开(公告)日：1989-02-21

申请号：US122826

申请日：1987-11-19

申请人： Gerald Meltz ,  William H. Glenn ,  Elias Snitzer

发明人： Gerald Meltz ,  William H. Glenn ,  Elias Snitzer

IPC分类号： G01B11/16 ,  G01D5/353 ,  G01K5/52

CPC分类号： G01K5/52 ,  G01B11/16 ,  G01D5/35383

摘要： A distributed, spatially resolving optical fiber strain gauge in which the core of the optical fiber is written with periodic grating patterns effective for transmitting and reflecting light injected into the core. Spectral shifts in the transmitted and reflected light indicate the intensity of strain or temperature variations at positions of the grating corresponding to the associated wavelengths of injected light.

摘要翻译： 分布式，空间分辨的光纤应变计，其中光纤的芯被写入有效地用于透射和反射注入到芯中的光的周期性光栅图案。 透射光和反射光中的光谱偏移表示对应于注入光的相关波长的光栅位置处的应变强度或温度变化。

公开(公告)号：US4725110A

公开(公告)日：1988-02-16

申请号：US925512

申请日：1986-10-27

申请人： William H. Glenn ,  Gerald Meltz ,  Elias Snitzer

发明人： William H. Glenn ,  Gerald Meltz ,  Elias Snitzer

IPC分类号： G01J1/02 ,  G01K11/12 ,  G01L1/00 ,  G02B5/18 ,  G02B6/00 ,  G02B6/02 ,  G02B6/124 ,  G02B6/34 ,  G02B6/12

CPC分类号： G02B5/18 ,  G02B6/02133 ,  G02B6/022 ,  G02B6/02204 ,  G02B6/124 ,  Y10S359/90

摘要： A method of establishing a dielectric periodic index of refraction phase grating upon the core of an optical waveguide by intense angled application of several transverse beams of ultraviolet light, enabling the establishment of a distributed, spatially resolving optical fiber strain gauge.

摘要翻译： 通过强烈地角度地施加几束紫外线横向光束，在光波导的核心上建立折射相位光栅的介电周期性折射率的方法，使得能够建立分布式空间分辨的光纤应变计。

公开(公告)号：US4482247A

公开(公告)日：1984-11-13

申请号：US512311

申请日：1983-07-08

申请人： Gerald Meltz ,  Leon A. Newman ,  James R. Dunphy ,  Martin C. Foster

发明人： Gerald Meltz ,  Leon A. Newman ,  James R. Dunphy ,  Martin C. Foster

IPC分类号： G01N21/53 ,  G01N21/00

CPC分类号： G01N21/53 ,  G01N2021/151

摘要： A sensor employs a laser to obtain a collimated light beam for transmission across the gas effluent of a catalytic cracking process. Particulate matter entrained in the gas flow forward scatters light energy to a collecting aperture which, in turn focuses the scattered light on a first photodetector. A second photodetector receives directly transmitted light energy. A ratio between the output signals of the two photodetectors is derived and presented to a threshold level detector. If the magnitude of the scatter exceeds a predetermined level it is concluded that a catalyst load dump has occurred. The optical system is carefully selected to ensure that only light energy scattered from a sample volume within the entrained gas flow reaches the first photodetector. This is important because it prevents particulate matter on the surfaces of the transparent windows from affecting the operating of the sensor.

摘要翻译： 传感器采用激光器获得准直光束，用于穿过催化裂化过程的气体流出物。 携带在气体流中的颗粒物质将光能分散到收集孔，聚集孔又将散射光聚焦在第一光电检测器上。 第二光电检测器接收直接透射的光能。 导出两个光电检测器的输出信号之间的比率并将其呈现给阈值电平检测器。 如果散射的大小超过预定水平，则可以得出结论，已经发生了催化剂负载突降。 仔细选择光学系统，以确保只有从夹带气体流中的样品体积散射的光能才能到达第一光电检测器。 这是重要的，因为它可以防止透明窗口表面上的颗粒物质影响传感器的运行。

公开(公告)号：US4300816A

公开(公告)日：1981-11-17

申请号：US71513

申请日：1979-08-30

申请人： Elias Snitzer ,  Gerald Meltz

发明人： Elias Snitzer ,  Gerald Meltz

IPC分类号： G02B6/44 ,  H04B10/2581 ,  G02B5/14

CPC分类号： H04B10/2581 ,  G02B6/02042 ,  G02B6/441

摘要： An optical waveguide having a plurality of cores disposed in a common cladding provides an optical fiber with both a wide bandwidth, by minimizing modal dispersion, and a large aperture to enhance light-carrying capacity. Each of the cores is sized to support only the lowest order mode, HE.sub.11, and the intercore spacing is selected to achieve a required bandwidth. At the same time, the multiple cores provide a large aperture allowing a relatively large amount of light energy emitted from a noncoherent light source to be coupled into the optical fiber. An array factor A.sub.f is given which provides design criteria for the intercore spacing by providing an accurate calculation of the pulse spreading with a large number of cores beginning with a simple twin core fiber.

摘要翻译： 具有设置在公共包层中的多个芯的光波导通过最小化模态色散而提供具有宽带宽的光纤，并且提供大的光圈以增强光承载能力。 每个核心的大小仅支持最低阶模式HE11，并且选择间隔间距以实现所需的带宽。 同时，多个芯提供大的孔径，允许从非相干光源发射的相对大量的光能耦合到光纤中。 给出阵列因子Af，其通过以简单的双芯光纤开始的大量核提供脉冲扩展的精确计算，为串间间距提供设计准则。

公开(公告)号：US06874361B1

公开(公告)日：2005-04-05

申请号：US10754064

申请日：2004-01-08

申请人： Gerald Meltz ,  Neal G. Skinner

发明人： Gerald Meltz ,  Neal G. Skinner

IPC分类号： E21B43/14 ,  E21B47/10 ,  G01H5/00 ,  E21B41/10

CPC分类号： E21B43/14 ,  E21B47/101 ,  G01H5/00

摘要： A distributed flow properties wellbore measurement system. In a described embodiment, a system for determining at least one parameter of a fluid in a tubular string includes a pressure pulse generator attached to the tubular string and a set of sensors. The generator transmits a pressure pulse through the fluid. The set of sensors is used to determine a velocity of the pressure pulse transmitted through the fluid, and to determine a velocity of the pressure pulse reflected back through the fluid.

摘要翻译： 分布式流量特性井筒测量系统。 在所描述的实施例中，用于确定管状串中的流体的至少一个参数的系统包括附接到管状串和一组传感器的压力脉冲发生器。 发生器通过流体传送压力脉冲。 该组传感器用于确定通过流体传输的压力脉冲的速度，并确定通过流体反射回的压力脉冲的速度。

公开(公告)号：US06385369B1

公开(公告)日：2002-05-07

申请号：US09450001

申请日：1999-11-29

申请人： Kenneth O. Hill ,  Derwyn C. Johnson ,  Gerald Meltz

发明人： Kenneth O. Hill ,  Derwyn C. Johnson ,  Gerald Meltz

IPC分类号： G02B634

CPC分类号： G02B6/29323 ,  G02B6/02085 ,  G02B6/02109 ,  G02B6/02138 ,  G02B6/278

摘要： An polarization compensator is disclosed for passing light in a predetermined wavelength range. The compensator has unequal output orthogonal polarizations for light launched into the device within a specific wavelength range. A waveguide having a blazed grating having a blaze angle &thgr;bl of between 20° and 45° with respect to the optical axis of the waveguide exhibits a tap efficiency difference for orthogonal polarizations for offsetting and lessening a polarization dependence of the device. This waveguide is optically coupled with the optical device requiring polarization compensation. The grating is oriented about its optical axis to lessen the inequality in output orthogonal polarizations for light launched into the optical device.

摘要翻译： 公开了用于使预定波长范围内的光通过的偏振补偿器。 补偿器对于在特定波长范围内发射到器件中的光具有不相等的输出正交偏振。 具有相对于波导的光轴具有20°和45°之间的闪耀角的闪耀光栅的波导具有用于正交偏振的抽头效率差异，用于偏移和减小该器件的偏振依赖性。 该波导与需要偏振补偿的光学器件光耦合。 光栅围绕其光轴定向，以减少发射到光学装置中的光的输出正交偏振的不等式。