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1. 发明授权

US07373024B2 On-fiber microwave modulator and high speed switch for telecommunication applications 有权
标题翻译：光纤微波调制器和电信应用的高速开关
公开(公告)号：US07373024B2
公开(公告)日：2008-05-13
申请号：US11699117
申请日：2007-01-29
申请人： Mahmoud A. El-Sherif
发明人： Mahmoud A. El-Sherif
IPC分类号： G02F1/035 , G02B6/42
CPC分类号： G02F1/2252 , G02F1/0118 , G02F1/2255 , G02F2202/022
摘要： Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and the fiber is coated with one or more layers of coated materials including a layer of electrooptic material surrounding the fiber core. A microwave cavity is positioned around the modified fiber where the optical fiber is passing through the cavity in the direction of the cavity main axis to provide a modulating microwave electromagnetic field applied to the electrooptic material. A communication signal applied to the microwave cavity will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.
摘要翻译：将通信信号，RF（射频）或微波信号应用于经修改的光纤，用于调制或关闭在光纤内传播的光信号。普通光纤的被动覆层材料从小区域去除，并且纤维被一层或多层涂覆材料涂覆，包括围绕纤维芯的电光材料层。微波空腔围绕改性光纤定位，其中光纤沿着空腔主轴线的方向通过空腔，以提供施加到电光材料的调制微波电磁场。施加到微波腔的通信信号将导致光学调制，使得可以检测光纤接收端处的光信号的调制强度和相位，并且可以实现信号的解调。

2. 发明授权

US07149391B1 On-fiber tunable coupler and high speed switch for telecommunication applications 失效
标题翻译：光纤可调谐耦合器和电信应用的高速开关
公开(公告)号：US07149391B1
公开(公告)日：2006-12-12
申请号：US11195211
申请日：2005-08-01
申请人： Mahmoud A. El-Sherif
发明人： Mahmoud A. El-Sherif
IPC分类号： G02B6/26
CPC分类号： G02F1/3132 , G02F1/0123 , G02F1/3131
摘要： An on-fiber tunable coupler and switch for communication systems. Two optical fibers are modified by replacing passive cladding with at least an inner metallic electrode, an electrooptic material layer on the inner electrode, and an outer metallic electrode on the electrooptic material. The optical fibers are positioned close to each other. More layers can be coated between any of these layers to improve the interface properties or reflectivity. The presence of an electric signal, will change the optical properties of the modified cladding, as will the propagation characteristics of the optical signal within one fiber core. This will permit tunable coupling of the signal from the first fiber core to the second fiber core(s). The coupling coefficient between the first and the second fiber(s) is adjustable. Switch-off the signal output from the first fiber to the second fiber is achieved at 100% coupling ratio.
摘要翻译：用于通信系统的光纤可调谐耦合器和开关。通过用至少内部金属电极，内部电极上的电光材料层和电光材料上的外部金属电极代替无源包层来修改两个光纤。光纤彼此靠近定位。可以在任何这些层之间涂覆更多的层以改善界面性质或反射率。电信号的存在将改变修改的包层的光学性质，以及一个光纤芯内的光信号的传播特性。这将允许从第一光纤芯到第二光纤芯的信号的可调谐耦合。第一和第二光纤之间的耦合系数是可调节的。在100％耦合比下，将从第一光纤输出的信号关闭到第二光纤。

3. 发明授权

US08805136B2 On-fiber tunable Bragg gratings for DWDM applications 有权
标题翻译：用于DWDM应用的光纤可调布拉格光栅
公开(公告)号：US08805136B2
公开(公告)日：2014-08-12
申请号：US11430783
申请日：2006-05-08
申请人： Mahmoud A. El-Sherif
发明人： Mahmoud A. El-Sherif
IPC分类号： G02B6/34
CPC分类号： G02B6/02195 , G02B6/02066 , G02F2201/307
摘要： A method and apparatus for tunable on-fiber Bragg gratings for DWDM and other applications on a small section of the core of single mode communication of an optical fiber. The method comprises etching most of the cladding on a small section of the fiber; coating the etched portion with a metallic electrode material and then with a layer of an electrooptic material; coating the electrooptic material with a photoresist; producing the Bragg grating pattern using a holographic process or on-axis interferometry; dissolving the non-exposed photoresist,; etching the grating pattern into the electrooptic material, and coating the Bragg gratings with a metallic material constructing the outer electrode. The presence of an electric signal on the electrodes will change the optical properties of the electrooptic material, as well as the diffraction/reflection properties of the Bragg gratings.
摘要翻译：一种用于DWDM等可调光纤布拉格光栅的方法和装置，在光纤单模通信核心的一小部分上应用其他应用。该方法包括蚀刻纤维的小部分上的大部分包层; 用金属电极材料涂覆蚀刻部分，然后用电光材料层涂覆蚀刻部分; 用光致抗蚀剂涂覆电光材料; 使用全息处理或在轴干涉测量法产生布拉格光栅图案; 溶解未曝光的光致抗蚀剂; 将光栅图案蚀刻到电光材料中，并用构成外电极的金属材料涂布布拉格光栅。在电极上存在电信号将改变电光材料的光学性质以及布拉格光栅的衍射/反射特性。

4. 发明授权

US07228012B2 On-fiber microwave modulator and high speed switch for telecommunication applications 失效
标题翻译：光纤微波调制器和电信应用的高速开关
公开(公告)号：US07228012B2
公开(公告)日：2007-06-05
申请号：US11195210
申请日：2005-08-01
申请人： Mahmoud A. El-Sherif
发明人： Mahmoud A. El-Sherif
IPC分类号： G02F1/035 , G02B6/42
CPC分类号： G02F1/2252 , G02F1/0118 , G02F1/2255 , G02F2202/022
摘要： Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and replaced with active multilayer materials including at least three layers of cladding surrounding the core. These layers are the inner metallic electrode coated on the surface of the optical fiber core, the electrooptic active material layer placed on the top of the inner electrode, and the outer metallic electrode coated on the top of the electrooptic material. A communication signal applied to the electrodes will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.
摘要翻译：将通信信号，RF（射频）或微波信号应用于经修改的光纤，用于调制或关闭在光纤内传播的光信号。普通光纤的被动覆层材料从小区域被去除，并被包括围绕芯的至少三层包层的活性多层材料代替。这些层是涂覆在光纤芯表面上的内部金属电极，电光活性物质层放置在内部电极的顶部，外部金属电极涂覆在电光材料的顶部。施加到电极的通信信号将导致光学调制，使得可以检测在光纤的接收端处的光信号的调制强度和相位，并且可以实现信号的解调。

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