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61. 发明公开

EP1199583A3 Optical fiber dispersion equalizer 审中-公开
标题翻译：玻璃纤维的色散补偿器
公开(公告)号：EP1199583A3
公开(公告)日：2004-08-18
申请号：EP01117343.2
申请日：2001-07-18
申请人： MITSUBISHI DENKI KABUSHIKI KAISHA
发明人： Hashimoto, Minoru , Yoshiara, Kiichi , Ohira, Takuya , Takagi, Shinichi
IPC分类号： G02B6/34 , G02B6/16
CPC分类号： G02B6/29322 , G02B6/02204 , G02B6/29394 , G02B6/29395 , G02B6/29398 , G02F1/0115 , G02F1/0147 , G02F2201/307
摘要： A light dispersion equalizer for compensating for variation in propagation rate among employed wavelengths. On a substrate having a groove for mounting an optical fiber provided thereon, heaters are formed side by side in parallel with the optical fiber mounting groove, and the optical fiber is accommodated in the groove. Because distance between the optical fiber and the heaters can be fixed, positioning of the optical fiber with the heaters can be performed with high accuracy.

63. 发明公开

EP1031858A3 Controllable wavelength-selective optical cross-connect 审中-公开
标题翻译：可调谐波长选择光交叉连接系统
公开(公告)号：EP1031858A3
公开(公告)日：2004-06-09
申请号：EP00301030.3
申请日：2000-02-09
申请人： LUCENT TECHNOLOGIES INC.
发明人： Fatehi, Mohammed Taghi , Jin, Sungho , Knox, Wayne Harvey , Mavoori, Hareesh
IPC分类号： G02B6/293 , H04Q11/00 , G02B6/34 , G02F1/01
CPC分类号： G02B6/022 , G02B6/2932 , G02B6/29395 , G02B6/3572 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0018 , H04Q2011/0032 , H04Q2011/0035
摘要： In accordance with the invention, an optical cross-connect switch includes an optical router for distributing multi-wavelength optical input signals, an optical combiner for supplying multi-wavelength signals at the output ports of the switch, and optical fibers for interconnecting the optical router and optical combiner. Selected interconnecting optical fibers include controllable wavelength-selective elements, such as magnetically controllable fiber gratings, which are capable of transmitting or reflecting individual channels within the multi-wavelength optical signals so that a selected channel of a particular wavelength can be routed from any of the input ports to any of the output ports of the switch.

64. 发明公开

EP1415417A1 OPTICAL BAND SCANNING MONITOR SYSTEM AND METHOD 有权
标题翻译：监控设备与遥感的方法光谱分析
公开(公告)号：EP1415417A1
公开(公告)日：2004-05-06
申请号：EP01991285.6
申请日：2001-12-13
申请人： Axsun Technologies, Inc.
发明人： KORN, Jeffrey, A. , ATIA, Walid, A.
IPC分类号： H04B10/08 , H04J14/02 , G02B6/34
CPC分类号： G02B26/001 , G01J3/26 , G02B6/29361 , G02B6/29385 , G02B6/29395 , G02B6/4246 , H04B10/077 , H04B10/07955 , H04J14/02 , H04J14/0221 , H04J14/0227 , H04J14/0241
摘要： A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally, discrepancies between the determined or detected channel inventory and a perpetual inventory for the WDM signal, which perpetual inventory specifies the channels that should be present in the WDM signal assuming proper operation of the network. The system includes a tunable optical filter (110) that scans a pass band across a signal band of a WDM signal (10) to generate a filtered signal (114). A photodetector (116) then generates an electrical signal (118) in response to this filtered signal. A decision circuit (130) compares the electrical signal to a threshold and a controller (150), which is responsive to the decision circuit, inventories the channels in the WDM signal (10).

65. 发明公开

EP1410080A1 OPTICAL SWITCHES AND ROUTERS AND OPTICAL FILTERS 审中-公开
标题翻译：光交换机和路由器和光滤波器
公开(公告)号：EP1410080A1
公开(公告)日：2004-04-21
申请号：EP02747920.3
申请日：2002-06-20
申请人： Arryx, Inc. , Bradley, Kenneth A.
发明人： BRADLEY, Kenneth, A. , LOPES, Ward
IPC分类号： G02B6/28
CPC分类号： G02F1/011 , G02B6/2706 , G02B6/29338 , G02B6/29341 , G02B6/29343 , G02B6/2935 , G02B6/29395 , G02F1/3132 , G02F2203/15 , G02F2203/585
摘要： Our invention relates generally to an optical switch (31) and an optical router (10) to rapidly route signals from particular channels (22, 24) within an optical band by using optical switches (20) which utilize a controlled whispering gallery mode (WGM) resonance of dielectric microspheres (S1, S2, S3) to optically switch signals. Another invention relates to optical filters which use a WGM resonate structure (150) to isolate and switch specific optical signals between waveguides (F1, F2). In other inventions, the filter (100) is switched 'on/off' by signal loss within a WGM resonate structure (150) which disrupts the WGM resonance; the filter (100) isolates and switches a specific wavelength signal from among a group of signals of different wavelengths; and is switched 'off' by adjusting the index of refraction of the resonate structure to become substantially similar to the index of refraction of the surrounding medium.

66. 发明公开

EP1300705A3 Optical multiplexer/demultiplexer and adjustment method 审中-公开
标题翻译：一种光多路复用器/多路分离器和调谐
公开(公告)号：EP1300705A3
公开(公告)日：2004-04-21
申请号：EP02022239.4
申请日：2002-10-02
申请人： Sumitomo Electric Industries, Ltd.
发明人： Takushima, Michiko, Yokohama Works , Suganuma, Hiroshi, Yokohama Works , Sano, Tomomi, Yokohama Works , Shigehara, Masakazu, Yokohama Works
IPC分类号： G02B6/34
CPC分类号： G02B6/29307 , G02B6/272 , G02B6/2773 , G02B6/2931 , G02B6/29313 , G02B6/2938 , G02B6/29395
摘要： The present invention relates to an optical multiplexer/demultiplexer. In the multiplexer/demultiplexer, a first grating receives to diffract a multi-wavelength light signal from a first port into light signals with different wavelengths. A second grating diffracts these light signals towards second ports. The second grating is disposed parallel with the first grating. The second grating has the same grating interval and grating direction as the first grating. The light signals diffracted by the second grating travel parallel with each other. Therefore, the light signals can efficiently enter the second ports without sophisticated lens design and adjustment of the optical system.

67. 发明公开

EP1396742A2 Adjustable dispersion compensator with few mode fibers and switchable mode converters 有权
标题翻译：可调式色散补偿器，具有少量模式光纤和可切换模式转换器
公开(公告)号：EP1396742A2
公开(公告)日：2004-03-10
申请号：EP03019933.5
申请日：2003-09-02
申请人： FITEL USA CORPORATION (a Delaware Corporation)
发明人： Ramachandran, Siddharth
IPC分类号： G02B6/14 , G02B6/16
CPC分类号： G02B6/29377 , G02B6/14 , G02B6/29395 , H04B10/25133
摘要： The specification describes dispersion compensators that are adjustable based on selection of mode propagation properties of two or more modes. The fundamental device structure comprises two or more sections of optical fiber that support the fundamental mode as well as well as one or more higher-order-modes (HOM). The HOM fibers are connected to each other by means of a spatial mode-converter (MC) that is switchable. The MC may be fabricated with, for example, long-period fiber-gratings (LPG), coupled waveguide devices, free-space phase-retardation elements, micro-electro-mechanical devices, or acousto-optic couplers. The MC is assembled such that it transforms any incoming spatial mode into one of any other guided modes in the HOM fiber. Switching is achieved by strain, temperature, the electro-optic or nonlinear optic effect, or any other physical effect that changes the refractive index of the optical material used to construct the MC.
摘要翻译：该规范描述了基于两种或更多种模式的模式传播特性选择可调的色散补偿器。基础设备结构包括支持基本模式以及一个或多个高阶模式（HOM）的两段或更多段光纤。 HOM光纤通过可切换的空间模式转换器（MC）相互连接。 MC可以用例如长周期光纤光栅（LPG），耦合波导装置，自由空间相位延迟元件，微电子机械装置或声光耦合器来制造。 MC被组装成使得它将任何进入的空间模式转换成HOM光纤中的任何其他导向模式之一。切换是通过应变，温度，电光或非线性光学效应或任何其他改变用于构建MC的光学材料的折射率的物理效应来实现的。

68. 发明公开

EP1386192A2 DYNAMIC OPTICAL FILTER HAVING A SPATIAL LIGHT MODULATOR 审中-公开
标题翻译：与空间光调制器的动态光学滤波器
公开(公告)号：EP1386192A2
公开(公告)日：2004-02-04
申请号：EP02728662.4
申请日：2002-04-03
申请人： CiDra Corporation
发明人： MOON, John , KERSEY, Alan, D. , SIRKIS, James, S. , DUNPHY, James , PINTO, Joseph , SZCZPPANEK, Paul , DAVIS, Michael
IPC分类号： G02B27/10 , G02B26/08 , H04J14/02 , G02B6/34 , H04Q11/00 , G02B6/42
CPC分类号： G02B6/4246 , G02B6/262 , G02B6/266 , G02B6/2713 , G02B6/272 , G02B6/278 , G02B6/2793 , G02B6/2931 , G02B6/29311 , G02B6/29313 , G02B6/29314 , G02B6/29395 , G02B6/29398 , G02B6/3516 , G02B6/356 , G02B6/3588 , G02B6/359 , G02B6/4226 , G02B26/0833 , G02B26/0841 , G02B27/1006 , G02B27/1073 , G02B27/108 , G02B27/1086 , G02B27/126 , G02B27/144 , G02B27/147 , H04J14/021 , H04J14/0213 , H04J14/0221 , H04Q2011/0009 , H04Q2011/0026
摘要： An dynamic optical filter 10 is provided to selectively attenuate or filter a wavelength band(s) of light (i.e., optical channel(s)) or a group(s) of wavelength bands of an optical WDM input signal 12. The optical filter is controllable or programmable to selectively provide a desired filter function. The optical filter 10 includes a spatial light modulator 36, which comprises an array of micromirrors 52 effectively forms a two-dimensional diffraction grating mounted in a retro-reflecting configuration. Each optical channel 14 is dispersed separately or overlappingly onto the array of micro-mirrors 52 along a spectral axis or direction 55 such that each optical channel or group of optical channels are spread over a plurality of micro-mirrors to effectively pixelate each of the optical channels or input signal. Each channel 14 or group of channels may be selectively attenuated by flipping or tilting a selected number of micro-mirrors to thereby deflect a portion of the incident radiation away from the return optical path. The micro-mirrors operate in a digital manner by flipping between a first and second position in response to a control signal 56 provided by a controller 58 in accordance with an attenuation algorithm and an input command 60. The switching algorithm may provide a bit (or pixel) map or look-up table indicative of the state of each of the micro-mirrors 52 of the array to selectively attenuate the input signal and provide a modified output signal 38 at optical fiber 40.

69. 发明公开

EP0887964A3 Filter selector 失效
标题翻译： Filterwähler
公开(公告)号：EP0887964A3
公开(公告)日：2004-01-21
申请号：EP98301850.8
申请日：1998-03-12
申请人： Marconi UK Intellectual Property Ltd
发明人： Ferguson, Stephen Patrick , Thorley, Anthony Michael
IPC分类号： G02B6/293
CPC分类号： G02B6/29368 , G02B6/29383 , G02B6/29395 , H04J14/0201
摘要： In an optical telecommunications system using wave division multiplexing (WDM) a wavelength add-drop multiplexer (WADM) has an array of adjacently connected filters, each for selecting light of a respective wavelength being transmitted in a multiplexed data stream along an optical fibre, each of the array of filters being adjacently connected to a portion of the array which is a nominally transparent filter and having means for moving the array so that movement between filters in use occurs via the nominally transparent filter portion of the array. Further, in a method of operating a WADM the transition between two filters of an array of filters each for selecting light of a respective wavelength being transmitted in a multiplexed data stream along an optical fibre occurs by way of a nominally transparent filter portion of the array.
摘要翻译：在使用波分复用（WDM）的光通信系统中，波分复用器（WADM）具有相邻连接的滤波器阵列，每个滤波器用于选择沿着光纤在多路复用数据流中传输的相应波长的光，滤波器阵列相邻地连接到阵列的一部分，其是名义上透明的滤光器，并且具有用于移动阵列的装置，使得在使用中的滤光片之间的移动通过阵列的标称透明滤光器部分发生。此外，在操作WADM的方法中，每个滤波器阵列的两个滤波器之间的转换，用于选择沿着光纤在多路复用数据流中传输的相应波长的光，通过阵列的标称透明滤波器部分。

70. 发明公开

EP1094625A3 Dispersion slope equalizer 有权
标题翻译： Dispersionsgradiententzerrer
公开(公告)号：EP1094625A3
公开(公告)日：2004-01-02
申请号：EP00309165.9
申请日：2000-10-18
申请人： Nippon Telegraph and Telephone Corporation
发明人： Takiguchi, Koichi , Okamoto, Katsunari , Goh, Takashi
IPC分类号： H04B10/18 , G02B6/34
CPC分类号： G02B6/29394 , G02B6/12007 , G02B6/12021 , G02B6/29353 , G02B6/29355 , G02B6/29395 , G02B6/29398 , H04B10/25133 , H04B2210/258
摘要： The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of DSF or NZ-DSF at 1.55 µm band, and to compensate for the dispersion of various fiber transmission lines having various dispersion values and variation of dispersion value caused by the temperature change or the like. WDM signals distorted by the dispersion slope of the fiber are introduced into an input waveguide (1, 20), and are demultiplexed by a wavelength demultiplexer (2, 21) into each wavelength component, and pass through lattice-form optical circuits (4-1 to 4-N), transversal-form optical circuits (23-1 to 23-N), or the combination of these circuits. The dispersion slope of the signals is compensated for by these circuits. The recovered signals are multiplexed by a wavelength multiplexer (5, 24), and the multiplexed light is outputted at an output waveguide (6, 25). Arrayed-waveguide gratings can be used as the wavelength demultiplexer and multiplexer. Also, cascaded configuration of Mach-Zehnder interferometers, bulk-type optical filters, or fiber-type (or waveguide-type) gratings in series can also be used as the wavelength demultiplexer and multiplexer.

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