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公开(公告)号：US5309534A
公开(公告)日：1994-05-03
申请号：US21702
申请日：1993-02-24
CPC分类号： G02B6/12007 , G02B6/29355
摘要： We describe an interferometric, channel-dropping, optical filter that includes a pair of planar waveguides. The two waveguides are spaced apart by a distance which is periodically varied along the longitudinal axis of the filter in order to effect a periodic optical coupling between them. There are at least three coupling locations, each associated with a coupling constant. The two waveguides have nominally equal effective refractive indices. In preferred embodiments of the invention, the coupling constants decrease symmetrically from the center of the filter toward the ends.
摘要翻译： 我们描述一种包括一对平面波导的干涉式，通道丢弃的滤光器。 两个波导间隔开沿着滤波器的纵向轴线周期性变化的距离，以便实现它们之间的周期性光耦合。 存在至少三个耦合位置，每个耦合位置与耦合常数相关联。 两个波导具有相等的有效折射率。 在本发明的优选实施例中，耦合常数从过滤器的中心向端部对称地减小。
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公开(公告)号：US5440416A
公开(公告)日：1995-08-08
申请号：US21698
申请日：1993-02-24
IPC分类号： H04J14/00 , G02B6/12 , G02B6/28 , G02B6/34 , H04B10/02 , H04B10/20 , H04B10/207 , H04B10/213 , H04B10/24 , H04J14/02
CPC分类号： H04B10/272 , G02B6/12011 , H04B10/2504 , G02B6/12007
摘要： An optical communication network includes a novel, passive optical component. This component combines the function of a splitter with the function of a wavelength-division multiplexer. These functions are performed in distinct wavelength bands. In one embodiment, the inventive component is made using silicon optical bench technology.
摘要翻译： 光通信网络包括新颖的无源光学部件。 该组件将分路器的功能与波分复用器的功能相结合。 这些功能在不同的波段进行。 在一个实施例中，使用硅光学平台技术制造本发明的部件。
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公开(公告)号：US5418868A
公开(公告)日：1995-05-23
申请号：US153691
申请日：1993-11-17
CPC分类号： G02F1/0147 , G02F1/3136
摘要： An optically switches relatively low power requirements and a relatively broad operating bandwidth. This switch includes a Mach-Zehnder interferometer (MZI) optically coupled at respective ends to an input coupler and an output coupler. One arm of the MZI includes a thermo-optic phase shifter. The output coupler is an adiabatic 3-dB coupler. In one embodiment, the input coupler is a Y-branch coupler having one input port. In a second embodiment, the input coupler is an adiabatic 3-dB coupler having two input ports.
摘要翻译： 光学切换相对较低的功率需求和相对宽的工作带宽。 该开关包括在相应端部光耦合到输入耦合器和输出耦合器的马赫 - 曾德干涉仪（MZI）。 MZI的一个臂包括一个热光学移相器。 输出耦合器是绝热的3 dB耦合器。 在一个实施例中，输入耦合器是具有一个输入端口的Y分支耦合器。 在第二实施例中，输入耦合器是具有两个输入端口的绝热3-dB耦合器。
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公开(公告)号：US5276746A
公开(公告)日：1994-01-04
申请号：US903690
申请日：1992-06-24
IPC分类号： G02B6/00 , G02B6/12 , G02B6/122 , G02B6/125 , H01S3/10 , H04B10/08 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14 , H04B10/16 , H04B10/17 , G02B6/26
CPC分类号： H04B10/07 , G02B6/125 , H04B10/035 , H04B10/2572 , H04B10/291 , H04B10/2912
摘要： In accordance with the invention an integrated optic device useful as a low level polarization independent optical tap comprises a pair of optical waveguides intersecting at an angle of 10.degree.-25.degree. to provide a tap signal in the range minus 20 dB to minus 60 dB. In a preferred embodiment for use in a passive repeater for undersea cable, the device comprises fiber-matching waveguides of phosphorus silicate glass on an oxide covered silicon substrate with a boron and phosphorus silicate cladding. The waveguides preferably intersect at an angle of 13.degree.-16.degree.. The preferred repeater further comprises a 3 dB coupler for averaging the power provided by two external pumping sources and a pair of wavelength division multiplexers for applying the pumping power to the outputs of the tap.
摘要翻译： 根据本发明，用作低电平偏振无关光学抽头的集成光学器件包括以10度-25度的角度相交的一对光波导，以提供在20dB至-60dB范围内的抽头信号。 在用于海底电缆的被动中继器的优选实施例中，该装置包括在具有硼和磷硅酸盐包层的氧化物覆盖的硅衬底上的磷硅玻璃的光纤匹配波导。 波导优选以13度-16度的角度相交。 优选的中继器还包括用于对由两个外部泵浦源提供的功率进行平均的3dB耦合器和用于将抽水功率施加到抽头的输出的一对波分复用器。
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公开(公告)号：US4952017A
公开(公告)日：1990-08-28
申请号：US323462
申请日：1989-03-14
IPC分类号： H01S5/50
CPC分类号： H01S5/5009
摘要： In a fiber-optic communication system, a polarization independent semiconductor optical amplifier structure is achieved by tailoring the height-width aspect ratio of its active region to a value at least close to unity and at the same time using a laser cavity structure in which the end mirrors are buried in the semiconductor body in which the optical amplifier structure is built.
摘要翻译： 在光纤通信系统中，通过将其有效区域的高度宽度纵横比调整为至少接近于一个的值并且同时使用激光腔结构来实现偏振无关半导体光放大器结构，其中， 端镜被埋在其中构建光放大器结构的半导体本体中。
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公开(公告)号：US5195161A
公开(公告)日：1993-03-16
申请号：US806941
申请日：1991-12-11
CPC分类号： G02B6/12007 , G02B6/126 , G02B2006/12107 , G02B2006/12169
摘要： Disclosed are planar waveguides comprising substantially polarization-independent Bragg gratings. A preferred embodiment of the invention comprises a Si body with a silica lower cladding layer thereon, and a phosphorus P-doped silica core on the lower cladding. Appropriate periodic recessed features are etched into the core, and phophorus P- and B-doped silica upper cladding is deposited over the core. The dopant concentrations are adjusted such that the refractive index difference between core and upper cladding is small (0.35-1.45.times.10.sup.-2), and such that the flow temperature of the upper cladding material is lower than that of the core material. In another preferred embodiment a thin layer of Si.sub.3 N.sub.x (x.about.4) is conformally deposited over the core after the grating etch, and the upper cladding material is deposited onto the Si.sub.3 N.sub.x layer. Bragg devices according to the invention are advantageously used in Integrated Optical Circuits (IOCs), e.g. in IOCs used in WDM optical communication systems.
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公开(公告)号：US4998793A
公开(公告)日：1991-03-12
申请号：US437049
申请日：1989-11-14
CPC分类号： G02B6/126 , G02B6/2726 , G02B6/29361
摘要： A TE-TM polarization manipulating (i.e., splitting, combining or filtering) device is constructed from substrate-supported dielectric thin film waveguides. In a 3-port device, two waveguides have cores of different materials and different effective refractive indices. The waveguide cores overlap in a first transition section and one waveguide core has an adiabatic taper; in this section they also separate adiabatically in and are coupled to a second (e.g., output) section where the waveguides are physically separate and optically decoupled. In a 4-port device, two additional waveguides are coupled in a second adiabatic transition section to the first transition section to enable TE or TM modes to be coupled straight through the device from one input port to a directly opposite output port or to be crossed-over from one input port to a diagonally opposite output port.
摘要翻译： 由衬底支撑的电介质薄膜波导构成TE-TM偏振操作（即，分离，组合或滤波）器件。 在3端口器件中，两个波导具有不同材料和不同有效折射率的芯。 波导芯在第一过渡段中重叠，一个波导芯具有绝热锥度; 在这一部分中，它们还绝热地分离并耦合到第二（例如，输出）部分，其中波导在物理上是分开的并且是光学去耦合的。 在4端口设备中，两个附加波导在第二绝热过渡部分耦合到第一过渡部分，以使得TE或TM模式能够通过设备从一个输入端口直接耦合到直接相对的输出端口或被交叉 - 从一个输入端口到对角线相对的输出端口。
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公开(公告)号：US4923271A
公开(公告)日：1990-05-08
申请号：US329468
申请日：1989-03-28
申请人： Charles H. Henry , Rudolf F. Kazarinov , Rodney C. Kistler , Kenneth J. Orlowsky , Yosi Shani , Aasmund S. Sudbo
发明人： Charles H. Henry , Rudolf F. Kazarinov , Rodney C. Kistler , Kenneth J. Orlowsky , Yosi Shani , Aasmund S. Sudbo
CPC分类号： G02B6/29328 , G02B6/29329 , G02B6/2938
摘要： An optical device is disclosed which provides wavelength multiplexing/demultiplexing utilizing a plurality of focusing Bragg reflectors. Each Bragg reflector includes a plurality of confocal (i.e., common foci) elliptical grating lines, with the exit/entrance ports of the input/output waveguides located at the foci of the ellipse. By virtue of the elliptical design, the signal propagating outward from the exit port of the input waveguide will be reflected by the appropriate Bragg reflector and focused into the entrance port of the appropriate output waveguide. When each Bragg reflector exhibits a different ellipticity, but shares one common focal point, optical multiplexing/demultiplexing may be achieved. Optical filtering may be achieved when all Bragg reflectors are designed to have common foci.
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公开(公告)号：US5093876A
公开(公告)日：1992-03-03
申请号：US709009
申请日：1991-05-31
CPC分类号： G02B6/29332 , G01D5/268 , G02B6/12007 , G02B6/125 , H04B10/2519 , H04B10/2581 , G02B2006/12107 , G02B2006/12159 , G02B6/29317
摘要： A wavelength selective structure is coupled to an adiabatic Y-coupler via a multimode section which supports both symmetric and antisymmetric modes. One single mode branch of the coupler converts guided light to a symmetric mode, whereas the other single mode branch converts guided light to an anti-symmetric mode. The structure, which includes a pair of single mode waveguide arms coupled to the common section and a reflection device (such as a grating or ROR) located in each arm, converts reflected light from a symmetric mode to an anti-symmetric mode and conversely. Applications described include a channel dropping filter and channel balancing apparatus for WDM systems, and a dispersion compensator for fiber optic systems.
摘要翻译： 波长选择结构通过支持对称和反对称模式的多模部分耦合到绝热Y耦合器。 耦合器的一个单模分支将引导光转换为对称模式，而另一个单模分支将引导光转换为反对称模式。 该结构包括耦合到公共部分的一对单模波导臂和位于每个臂中的反射装置（例如光栅或ROR），将来自对称模式的反射光转换成反对称模式，反之亦然。 所描述的应用包括用于WDM系统的信道丢弃滤波器和信道平衡装置，以及用于光纤系统的色散补偿器。
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公开(公告)号：US5048909A
公开(公告)日：1991-09-17
申请号：US559010
申请日：1990-07-27
CPC分类号： G02B6/29319 , G01D5/268 , G02B6/12007 , G02B6/125 , G02B6/29355 , H04B10/2507 , H04B10/2519 , H04B10/2581 , G02B2006/12107 , G02B2006/12159
摘要： A wavelength selective structure is coupled to an adiabatic Y-coupler via a multimode section which supports both symmetric and antisymmetric modes. One single mode branch of the coupler converts guided light to a symmetric mode, whereas the other single mode branch converts guided light to an anti-symmetric mode. The structure, which includes a pair of single mode waveguide arms coupled to the common section and a reflection device (such as a grating or ROR) located in each arm, converts reflected light from a symmetric mode to an anti-symmetric mode and conversely. Applications described include a channel dropping filter and channel balancing apparatus for WDM systems, and a dispersion compensator for fiber optic systems.
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