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1. 发明授权

US5479551A Optical fiber non-reciprocal phase shifters and optical isolators using them 失效
标题翻译：光纤非互易移相器和使用它们的光隔离器
公开(公告)号：US5479551A
公开(公告)日：1995-12-26
申请号：US297455
申请日：1994-08-29
申请人： David J. DiGiovanni , Kenneth L. Walker , Weyl-Kuo Wang , Raymond Wolfe
发明人： David J. DiGiovanni , Kenneth L. Walker , Weyl-Kuo Wang , Raymond Wolfe
IPC分类号： G01C19/72 , G02B6/00 , G02B6/02 , G02B27/28 , G02F1/095 , G02B6/16
CPC分类号： G02B6/02042 , G02B6/02 , G02F1/0955
摘要： In accordance with the invention, an optical fiber phase shifter comprises a length of asymmetrical optical fiber disposed perpendicular to a magnetic field for providing a non-reciprocal phase shift. Preferably the fiber is wound in a circular coil and exposed to an axial field as from a pancake magnet. In an isolator, the fiber length and magnet strength are chosen to provide non-reciprocal phase shifts of .+-.45.degree. or .+-.90.degree.. The isolator including the phase shifter can be any of several configurations.
摘要翻译：根据本发明，光纤移相器包括垂直于磁场设置的一定长度的不对称光纤，用于提供不可逆相移。优选地，纤维缠绕在圆形线圈中并且从薄饼磁体暴露于轴向场。在隔离器中，选择纤维长度和磁体强度，以提供+/- 45度或+/- 90度的非相互相移。包括移相器的隔离器可以是几种配置中的任何一种。

2. 发明授权

US5745612A Wavelength sorter and its application to planarized dynamic wavelength routing 失效
标题翻译：波长分选器及其在平面化动态波长路由中的应用
公开(公告)号：US5745612A
公开(公告)日：1998-04-28
申请号：US574474
申请日：1995-12-18
申请人： Weyl-Kuo Wang , Franklin Fuk-Kay Tong , Karen Liu
发明人： Weyl-Kuo Wang , Franklin Fuk-Kay Tong , Karen Liu
IPC分类号： H04J14/00 , G02B6/34 , H04B10/02 , H04J14/02 , H04Q11/00 , G02B6/28
CPC分类号： G02B6/12019 , H04Q11/0001
摘要： This invention provides methods and apparatus for achieving wavelength sorting multiplexer/demultiplexer and its application to the implementation of planarized dynamic wavelength routing. Using integrated arrayed-waveguide gratings, sorting can be achieved by two configurations. In the first configuration channel wavelengths are properly selected and launched into prearranged input waveguides of an arrayed-waveguide grating such that channels at the same wavelength and from all inputs will be demultiplexed and routed to adjacent outputs. Operated in the reverse direction, the same device becomes a sorting multiplexer. The second configuration achieves wavelength sorting by using the cascade of multiple arrayed-waveguide gratings and can also be operated as a demultiplexer or a multiplexer. Combined with space switches, the wavelength sorting multi/demultiplexer are utilized to implement the planarized channel-selective dynamic wavelength router. The function of wavelength sorting eliminates on-chip waveguide crossings and therefore reduces losses and crosstalks. The sorting demultiplexer and multiplexer can further be implemented with a single arrayed-waveguide grating.
摘要翻译：本发明提供了用于实现波长分类多路复用器/解复用器的方法和装置及其在实现平面化动态波长路由中的应用。使用集成阵列波导光栅，可以通过两种配置实现排序。在第一配置信道中，波长被适当地选择并发射到阵列波导光栅的预先布置的输入波导中，使得相同波长的信道和所有输入的信道将被解复用并被路由到相邻的输出端。相反的方式操作相同的设备成为分类多路复用器。第二种配置通过使用多个阵列波导光栅的级联实现波长分类，并且还可以作为解复用器或多路复用器来操作。结合空间开关，利用波长分选多/多路分离器来实现平面化通道选择性动态波长路由器。波长分选的功能消除了片上波导交叉，从而减少了损耗和串扰。分类解复用器和多路复用器可以进一步用单个阵列波导光栅来实现。

3. 发明授权

US06208443B1 Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filtering 失效
标题翻译：动态光分插复用器和波长路由网络具有提高的生存性和最小化的频谱滤波
公开(公告)号：US06208443B1
公开(公告)日：2001-03-27
申请号：US09135957
申请日：1998-08-18
申请人： Karen Liu , Weyl-Kuo Wang , Chaoyu Yue
发明人： Karen Liu , Weyl-Kuo Wang , Chaoyu Yue
IPC分类号： H04J1402
CPC分类号： H04Q11/0005 , G02B6/2932 , G02B6/29322 , G02B6/29395 , H04J14/0206 , H04J14/0209 , H04J14/021 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0035 , H04Q2011/0092
摘要： A method and apparatus for constructing an optical wavelength-routing network in which each network node is a dynamic add-drop multiplexer (OADM) with minimized spectral filtering effect on pass-through channels and survivability upon power failure. By using cascaded tunable reflection filters as the building blocks, strictly add-drop non-blocking OADMs for single input/output fibers, double input/output fibers, and 3 input/output fibers can be constructed for application to unidirectional and bidirectional ring networks and mesh networks of arbitrary degree. Methods and apparatus for minimizing various types of out-of-band and in-band crosstalk occurring within the dynamic OADMs are also described.
摘要翻译：一种用于构建光波长路由网络的方法和装置，其中每个网络节点是对通过信道具有最小的频谱滤波效应的动态分插复用器（OADM）以及断电时的生存性。通过使用级联可调谐反射滤波器作为构建块，可以构建用于单输入/输出光纤，双输入/输出光纤和3个输入/输出光纤的严格添加无阻塞OADM，以应用于单向和双向环形网络，任意度的网状网络。还描述了用于最小化在动态OADM内发生的各种类型的带外和带内串扰的方法和装置。

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