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公开(公告)号：US5644664A
公开(公告)日：1997-07-01
申请号：US471461
申请日：1995-06-06
IPC分类号： G02F1/225 , G02F2/00 , H04B10/142 , G02B6/10
CPC分类号： G02F1/225 , G02F1/2255 , H04B10/5051 , H04B10/5053 , G02F2/002
摘要： A transmission system responsive to an electrical input information signalncludes means for modulating the input signal with a microwave subcarrier signal to produce a subcarrier modulated signal. A first interferometric modulator responsive to a source light and to the subcarrier modulated signal produces a first modulated optical signal. A second interferometric modulator cascade coupled to the first modulator and being responsive to the first modulated optical signal and to a microwave local oscillator signal produces a second modulated optical signal. Means coupled between the first and second modulators transmit the first modulated optical signal from the first modulator to the second modulator. Means responsive to the second modulated optical signal produce an output signal.
摘要翻译： 响应于电输入信息信号的传输系统包括用微波副载波信号调制输入信号以产生副载波调制信号的装置。 响应于源光和副载波调制信号的第一干涉式调制器产生第一调制光信号。 耦合到第一调制器并响应于第一调制光信号和微波本地振荡器信号的第二干涉式调制器级联产生第二调制光信号。 耦合在第一和第二调制器之间的装置将第一调制光信号从第一调制器传送到第二调制器。 响应于第二调制光信号的装置产生输出信号。
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公开(公告)号：US5422966A
公开(公告)日：1995-06-06
申请号：US258028
申请日：1994-06-10
IPC分类号： G02F1/225 , G02F2/00 , H04B10/142 , G02B6/12
CPC分类号： G02F1/225 , G02F1/2255 , G02F2/002 , H04B2210/006
摘要： An electro-optic mixer includes means for providing first and second microwave signals having first and second frequencies, respectively, a device for providing a source light, a first modulator responsive to the source light and to the first microwave signal for producing a first modulated optical signal, a second modulator cascade coupled to the first modulator and being responsive to the first modulated signal and to the second microwave signal for producing a second modulated optical signal having a frequency component at the sum or difference or both of the first and second frequencies, and means coupled between the first and second modulators for transmitting the first modulated signal to the second modulator. Each of the first and second modulators is a broadband, low drive voltage, traveling wave intensity modulator including a substrate having a first optical waveguide adapted to receive and transmit light therethrough with a first phase velocity; a buffer layer disposed on the substrate; and a coplanar waveguide electrode structure on the buffer layer for receiving an electrical signal propagating therethrough with a second phase velocity to phase modulate the light in the optical waveguide. The substrate has a sufficiently small thickness so that coplanar mode-substrate mode coupling substantially does not occur, and the coplanar waveguide electrode structure has a sufficiently large thickness so that the first and second phase velocities are equal.
摘要翻译： 电光混合器包括用于分别提供具有第一和第二频率的第一和第二微波信号的装置，用于提供源光的装置，响应源光的第一调制器和用于产生第一调制光的第一微波信号 信号，耦合到第一调制器的第二调制器级联并且响应于第一调制信号和第二微波信号，以产生具有第一和第二频率之和或差或频率分量的第二调制光信号， 以及耦合在第一和第二调制器之间的装置，用于将第一调制信号发射到第二调制器。 第一和第二调制器中的每一个是宽带低驱动电压行波强度调制器，其包括具有第一光波导的衬底，该第一光波导适于以第一相速度接收和透射光; 设置在所述基板上的缓冲层; 以及缓冲层上的共面波导电极结构，用于接收以第二相速度传播的电信号，以相位调制光波导中的光。 衬底具有足够小的厚度，使得基本上不发生共面模式 - 衬底模式耦合，并且共面波导电极结构具有足够大的厚度，使得第一和第二相速度相等。
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3.发明授权Multi-octave, high dynamic range operation of low-biased modulators by balanced detection 失效通过平衡检测，可实现低偏置调制器的多倍频程，高动态范围运行
公开(公告)号：US5644665A
公开(公告)日：1997-07-01
申请号：US508119
申请日：1995-07-27
CPC分类号： G02F1/0327 , G02F2203/19
摘要： An optical link is disclosed that is operated by a balanced detection technique so as to extend its linear dynamic range, yet substantially eliminate even-order harmonic distortion of the modulated signal. The modulator comprises two parallel arranged Mach-Zehnder interferometers that respectively have a steady state DC voltage bias applied so that the operating points of the Mach-Zehnder interferometers are selected to produce two separate modulated signals, one of which is later phase shifted by a phase shift device so as to provide an output that is combined with the other modulated signal in such a manner so as to cause a subtraction, leaving the final output signal substantially free of any unwanted even-order harmonic components in order to provide for a multi-octave response characteristic.
摘要翻译： 公开了一种通过平衡检测技术操作以便扩展其线性动态范围但基本上消除调制信号的偶次谐波失真的光链路。 调制器包括两个平行布置的马赫 - 曾德干涉仪，分别具有施加的稳态直流电压偏压，使得马赫 - 策德尔干涉仪的工作点被选择以产生两个分离的调制信号，其中一个后来被相位相移 以提供与其他调制信号组合的输出，以便产生减法，从而使最终输出信号基本上没有任何不需要的偶次谐波分量， 八度响应特性。
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公开(公告)号：US5407787A
公开(公告)日：1995-04-18
申请号：US77903
申请日：1993-06-18
摘要： A process for making thick metal structures on a substrate has the steps of: selectively exposing a thick layer of photoresist disposed on a substrate to ultraviolet radiation including the 350 nm to 450 nm portion of tile spectrum of a mercury vapor lamp, where the photoresist layer is a heat-treated arid hydrated photoresist layer, to fully pattern the substrate: developing the patterned substrate by contacting the photoresist layer with a photoresist developing solution; exposing the photoresist layer to a plasma for hardening the pattern against thermal flow; hardbaking the photoresist pattern on the substrate; plating the metal onto the patterned substrate using a low current density (J) during at least part of the plating process, making a thick methyl structure on the substrate.
摘要翻译： 在衬底上制造厚金属结构的方法具有以下步骤：选择性地将设置在衬底上的厚的光致抗蚀剂层暴露于包含汞蒸气灯的瓷砖光谱的350nm至450nm部分的紫外线辐射，其中光刻胶层 是热处理的水合光致抗蚀剂层，以完全图案化基底：通过使光致抗蚀剂层与光致抗蚀剂显影溶液接触来显影图案化的基底; 将光致抗蚀剂层暴露于等离子体以使图案硬化以抵抗热流动; 硬化基板上的光致抗蚀剂图案; 在电镀工艺的至少一部分期间使用低电流密度（J）将金属镀覆到图案化衬底上，在衬底上形成厚的甲基结构。
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公开(公告)号：US06661934B2
公开(公告)日：2003-12-09
申请号：US10143885
申请日：2002-05-14
申请人： William K. Burns , Larry A. Hess , Vishal Agarwal
发明人： William K. Burns , Larry A. Hess , Vishal Agarwal
IPC分类号： G02F1035
CPC分类号： G02F1/035 , G02F1/225 , G02F2201/07 , G02F2203/21
摘要： An optical waveguide device including an electro-optical crystal substrate having a top surface and a bottom surface; an optical waveguide path formed within a surface of the electro-optical crystal substrate; at least one electrode positioned above the optical waveguide path for applying an electric field to the optical waveguide path; and a silicon titanium oxynitride layer and a connecting layer for interconnecting the silicon titanium oxynitride layer to another surface of the electro-optical crystal substrate that is opposite to the surface in which the optical waveguide path is formed.
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公开(公告)号：US06526186B2
公开(公告)日：2003-02-25
申请号：US10098310
申请日：2002-03-18
申请人： William K. Burns
发明人： William K. Burns
IPC分类号： G02F10355
CPC分类号： G02F1/2255 , G02F2203/25
摘要： An optical modulator includes a substrate having an electrooptic effect, an optical waveguide having first and second cascading portions in the substrate, and transmitting an optical field, a first coplanar strip electrode having a first part over the first cascading portion and second and third parts extending beyond the first cascading portion, wherein the first part is approximately perpendicular to the second and third parts and has a width substantially the same as the first cascading portion, a second coplanar strip electrode having a first part over the second cascading portion and second and third parts to extend beyond the second cascading portion, and the first part being approximately perpendicular to the second and third parts, and a voltage source supplying a voltage to the first coplanar strip electrode, wherein the second coplanar strip electrode is grounded and is symmetrical to the first coplanar strip electrode.
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7.发明授权
公开(公告)号：US5619364A
公开(公告)日：1997-04-08
申请号：US392310
申请日：1995-02-22
CPC分类号： H04B10/2537
摘要： A method and apparatus for counteracting polarization fading and stimulated Brillouin scattering in long runs of non-polarization maintaining optical fiber. A linearly polarized optical signal is depolarized by phase modulating the signal at a frequency significantly above the fiber's Brillouin scattering linewidth V.sub.b prior to launch into the long run of fiber.
摘要翻译： 用于抵消非偏振保持光纤的长时间偏振衰减和受激布里渊散射的方法和装置。 线性偏振光信号通过在发射到长时间光纤之前以明显高于光纤的布里渊散射线宽Vb的频率进行相位调制来去偏振。
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公开(公告)号：US5319440A
公开(公告)日：1994-06-07
申请号：US934221
申请日：1992-08-25
CPC分类号： G01C19/721
摘要： A depolarized fiber optic gyroscope with a detector for detecting a rotat about an axis of rotation and a method therefor is disclosed. The gyroscope includes a depolarized light source for generating the depolarized light; a gyro coil for conducting depolarized light about the axis of rotation, the gyro coil including a coil of a non-polarization preserving fiber having first and second ends; a depolarizer with first and second ports for eliminating birefringence induced scale factor variations caused by the non-polarization preserving fiber, the first port of the depolarizer being coupled to the first end of the gyro coil; and a coupler device for coupling the second end of the gyro coil, the second port of the depolarizer, the detector and the depolarized light source, without utilizing a polarizer.
摘要翻译： 公开了一种具有用于检测围绕旋转轴线的旋转的检测器的去极化光纤陀螺仪及其方法。 陀螺仪包括用于产生去极化光的去极化光源; 用于对旋转轴线进行去偏光的陀螺线圈，所述陀螺线圈包括具有第一端和第二端的非偏振保留光纤的线圈; 具有第一和第二端口的消偏振器，用于消除由非偏振保留光纤引起的双折射引起的比例因子变化，去偏振器的第一端口耦合到陀螺仪线圈的第一端; 以及用于耦合陀螺仪线圈的第二端，去极化器的第二端口，检测器和去极化光源的耦合器装置，而不使用偏振器。
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9.发明授权Method for eliminating birefringence in a fiber optic coupler and a coupler polarization corrector 失效用于消除光纤耦合器和耦合器偏振校正器中的双折射的方法
公开(公告)号：US4737005A
公开(公告)日：1988-04-12
申请号：US450693
申请日：1982-12-17
CPC分类号： G02B6/274 , G01C19/725 , G02B6/24 , G02B6/2766 , G02B6/2821 , G02B6/2843 , Y10S359/90
摘要： A method for correcting birefringence in a fiber optic coupler comprising measuring the intrinsic birefringent retardation, fast axis orientation and rotation of separate paths through the coupler and adding lumped birefringent elements to the ports of the coupler in a fashion to compensate for the intrinsic birefringence.
摘要翻译： 一种用于校正光纤耦合器中的双折射的方法，包括测量固有双折射延迟，快轴定向和通过耦合器的分离路径的旋转，并以集中的双折射元件以耦合器的端口的方式补偿本征双折射。
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公开(公告)号：US4653917A
公开(公告)日：1987-03-31
申请号：US478593
申请日：1983-03-24
CPC分类号： G01C19/725
摘要： A fiber optic gyroscope comprising a Sagnac interferometer including a (3.times.3) optical directional coupler. The gyroscope is driven with an essentially unpolarized broadband spatially coherent light beam supplied by a super-luminescent diode source. A significant reduction in baseband noise occurs due to the use of the essentially unpolarized light beam.
摘要翻译： 包括具有（3×3）光学定向耦合器的Sagnac干涉仪的光纤陀螺仪。 陀螺仪由超发光二极管源提供的基本上非偏振的宽带空间相干光束驱动。 由于使用了基本上非偏振光束，基带噪声显着降低。
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