公开(公告)号：US20190214782A1

公开(公告)日：2019-07-11

申请号：US15868703

申请日：2018-01-11

申请人： Fujitsu Limited

发明人： Youichi Akasaka ,  Tadashi Ikeuchi

IPC分类号： H01S3/10 ,  G02B6/02 ,  H01S3/30 ,  G02F1/365

CPC分类号： H01S3/10053 ,  G02B6/02085 ,  G02B6/02195 ,  G02F1/365 ,  H01S3/302 ,  H04B10/67 ,  H04J14/0201

摘要： An FBG element is configured to apply a phase shift to at least one of an input optical signal, a first pump light, and an idler signal between stages of a phase sensitive amplifier. The FBG element is apodized using a trapezoidal apodization function over the length of the first FBG element to enable tuning of the phase shift over a range of 2π radians.

公开(公告)号：US20150338574A1

公开(公告)日：2015-11-26

申请号：US14718273

申请日：2015-05-21

申请人： TERAXION INC.

发明人： François PELLETIER

IPC分类号： G02B6/02 ,  B23K26/34 ,  B23K26/00

CPC分类号： G02B6/02195 ,  B23K26/21 ,  B23K26/262 ,  B23K26/282 ,  B23K26/32 ,  B23K26/34 ,  B23K2101/04 ,  B23K2103/166 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/02209

摘要： A post-assembly wavelength-tuning method for an optical filter provided along an optical fiber mounted under tension in a packaging assembly is provided. The packaging assembly includes at least one packaging component mechanically coupled to the optical fiber and optically accessible from outside of the packaging assembly. The method includes a step of measuring a post-assembly spectral response of the optical filter and determining therefrom a spectral deviation with respect to a target spectral response. The method also includes a step of forming one or more laser-welded zones on the packaging component so as to cause a permanent deformation thereof. The permanent deformation induces a modification in length of the optical fiber, thereby changing the post-assembly spectral response of the optical filter to compensate for the measured spectral deviation.

摘要翻译： 提供了一种用于沿着安装在包装组件中的张力下的光纤设置的滤光器的后装配波长调谐方法。 包装组件包括至少一个机械耦合到光纤并且可从包装组件的外部光学地接近的包装部件。 该方法包括测量光学滤波器的装配后光谱响应并由此确定相对于目标光谱响应的光谱偏差的步骤。 该方法还包括在包装部件上形成一个或多个激光焊接区域以使其永久变形的步骤。 永久变形引起光纤长度的改变，从而改变光学滤波器的组装后光谱响应，以补偿测量的光谱偏差。

公开(公告)号：US20100316328A1

公开(公告)日：2010-12-16

申请号：US12654654

申请日：2009-12-28

申请人： José Luiz Arias Vidal ,  Ricardo Munoz Freitas ,  Arthur Martins Barbosa Braga ,  Luiz Carlos Guedes Valente ,  Antônio Carlos Oliveira Bruno ,  Hélio Ricardo Carvalho

发明人： José Luiz Arias Vidal ,  Ricardo Munoz Freitas ,  Arthur Martins Barbosa Braga ,  Luiz Carlos Guedes Valente ,  Antônio Carlos Oliveira Bruno ,  Hélio Ricardo Carvalho

IPC分类号： G02B6/00

CPC分类号： G01D5/485 ,  G01D5/35312 ,  G02B6/02195 ,  G02B6/022

摘要： Fiber optic position transducer that includes a magnetic or electromagnetic element, one or more segments of magnetostrictive material, Fiber Bragg Grating Sensors, a rod of material that is impenetrable to magnetic fields, optical fiber. One or more of the sensors is fixed upon a segment of magnetostrictive material, which is fixed to a rod, and may only be displaced longitudinally. The Fiber Bragg Grating Sensors have different wave lengths and are made of the same optical fiber. The magnetic or electromagnetic element included may be made of NdFeB (Neodymium Iron Boron) or metal alloys of TbDyFe (Terbium, Dysprosium and Iron), such as TX, Terphenol-D and others. It is applied to a control flow valve in an oil well, and it also refers to the calibration process of the position of the transducer.

摘要翻译： 光纤位置传感器包括磁性或电磁元件，一个或多个磁致伸缩材料段，光纤布拉格光栅传感器，不可穿透磁场的材料棒，光纤。 传感器中的一个或多个固定在磁致伸缩材料的一段上，该磁致伸缩材料固定在杆上，并且只能纵向移动。 光纤布拉格光栅传感器具有不同的波长，由相同的光纤制成。 包括的磁性或电磁元件可以由NdFeB（钕铁硼钕）或TbDyFe（铽，镝和铁）的金属合金，如TX，Terphenol-D等制成。 它被应用于油井中的控制流量阀，并且还涉及换能器位置的校准过程。

公开(公告)号：US07831114B2

公开(公告)日：2010-11-09

申请号：US12351843

申请日：2009-01-11

申请人： Gregory M. Bubel ,  William R. Holland ,  David J. Kudelko ,  Yaowen Li ,  Paul S. Westbrook

发明人： Gregory M. Bubel ,  William R. Holland ,  David J. Kudelko ,  Yaowen Li ,  Paul S. Westbrook

IPC分类号： G02B6/00 ,  G02B6/34

CPC分类号： H04B10/2572 ,  G02B6/02109 ,  G02B6/02195 ,  G02B6/274 ,  G02B6/2932 ,  G02B6/29322 ,  G02B6/29394 ,  H04B10/2519

摘要： In a method and system for providing dispersion compensation in an optical system, there is coupled into the optical system at least one pathway into which there is connected a tunable chirped fiber Bragg grating, each such grating providing a respective tunable amount of dispersion. At least one respective DGD element is connected into the respective pathway for each such grating. The set of all such respective DGD elements in a given pathway introduces a bias differential group delay DGD(bias) having an absolute value that, for at least one tuning value of the grating, is substantially equal to differential group delay introduced by the grating.

摘要翻译： 在用于在光学系统中提供色​​散补偿的方法和系统中，耦合到光学系统中的至少一个通路，其中连接有可调谐线性调频光纤布拉格光栅，每个这样的光栅提供相应的可调量的色散。 对于每个这样的光栅，至少一个相应的DGD元件连接到相应的通路中。 在给定路径中的所有这些相应的DGD元件的集合引入了具有绝对值的偏差差分群延迟DGD（偏置），对于光栅的至少一个调谐值，其基本上等于由光栅引入的差分群延迟。

公开(公告)号：US20070262247A1

公开(公告)日：2007-11-15

申请号：US11463636

申请日：2006-08-10

申请人： Carlos Becerra ,  William K. Chandler ,  Scott Powers ,  Abebaw Zeleke

发明人： Carlos Becerra ,  William K. Chandler ,  Scott Powers ,  Abebaw Zeleke

IPC分类号： G01J5/08 ,  G02B6/00

CPC分类号： G01K11/3206 ,  A61H2203/0456 ,  A61H2230/50 ,  A61H2230/62 ,  G01D5/35383 ,  G01K13/002 ,  G02B6/02195

摘要： A mechanism for mapping an anatomical characteristic of a patient includes a treatment bed having a top surface. A fiber Bragg grating channel is disposed along at least a portion of the treatment bed near the top surface and includes a fiber optic waveguide defining a plurality of spaced-apart Bragg-type gratings. A multi-wavelength light source generates a beam that is in optical communication with the fiber Bragg grating channel. A detector, in optical communication with the fiber Bragg grating channel, detects reflections of light from at least one of the Bragg-type gratings. A computer is programmed to calculate at least one anatomical characteristic based on a characteristic of at least one of the reflection of light.

摘要翻译： 用于映射患者的解剖特征的机构包括具有顶表面的治疗床。 纤维布拉格光栅通道沿着顶表面附近的治疗床的至少一部分设置，并且包括限定多个间隔开的布拉格型光栅的光纤波导。 多波长光源产生与光纤布拉格光栅通道光通信的光束。 与光纤布拉格光栅通道光通信的检测器检测来自布拉格型光栅中的至少一个的光的反射。 计算机被编程为基于光的至少一个的特性来计算至少一个解剖特征。

公开(公告)号：US20070196048A1

公开(公告)日：2007-08-23

申请号：US11652947

申请日：2007-01-12

申请人： Almantas Galvanauskas ,  Yogesh Gianchandani ,  Liao Kai-Hsiu ,  Kabir Udeshi ,  Long Que

发明人： Almantas Galvanauskas ,  Yogesh Gianchandani ,  Liao Kai-Hsiu ,  Kabir Udeshi ,  Long Que

IPC分类号： G02B6/34

CPC分类号： G02F1/0134 ,  G02B6/02085 ,  G02B6/02195 ,  G02B6/022 ,  G02B6/2932 ,  G02F2201/307

摘要： A fiber including a fiber grating and at least one refractive index modifier interfacing the fiber grating, the at least one refractive index modifier selectively introducing a refractive-index change on the fiber grating.

摘要翻译： 一种光纤，包括光纤光栅和至少一个与光纤光栅接合的折射率调节剂，所述至少一种折射率改性剂在光纤光栅上选择性地引入折射率变化。

公开(公告)号：US07010195B2

公开(公告)日：2006-03-07

申请号：US10099212

申请日：2002-03-15

申请人： Paul Westbrook

发明人： Paul Westbrook

IPC分类号： G02B6/34 ,  G02B6/27

CPC分类号： G02B6/4215 ,  G02B6/02109 ,  G02B6/02195 ,  G02B6/243 ,  G02B6/266 ,  G02B6/2726 ,  G02B6/2793 ,  G02B6/29317 ,  G02B6/4214

摘要： A tunable polarization dependent loss element is formed of a fiber including a highly tilted optical grating. The grating is formed at an angle of approximately 45° so as to preferentially scatter one polarization state out of the fiber core while allowing the remaining, orthogonal polarization to propagate unimpeded. By twisting the ends of the fiber grating structure, the orientation of the grating with respect to the fiber optical axis will be changed, modifying the amount of optical signal existing in each polarization state. In one embodiment, both ends may be rotated in the same direction through the same angular displacement, resulting in merely rotating the principle states of polarization in the fiber. Alternatively, the ends of the grating may be rotated (twisted) in opposite directions so as to couple all of the light signal into a single polarization state, reducing the amount of polarization dependent loss to essentially zero. Therefore, by controlling the twist imparted to the grating, the amount of exhibited polarization dependent loss can also be controlled.

公开(公告)号：US06937793B2

公开(公告)日：2005-08-30

申请号：US10390590

申请日：2003-03-17

申请人： Sylviane Lelievre ,  Richard L. Lachance ,  Yves Painchaud

发明人： Sylviane Lelievre ,  Richard L. Lachance ,  Yves Painchaud

IPC分类号： H04B10/2519 ,  G06F17/30 ,  G02B6/34 ,  H04J14/02 ,  H04J14/08

CPC分类号： G02B6/2932 ,  G02B6/02195 ,  G02B6/29394 ,  G02B6/29395 ,  G06F17/30864 ,  H04B10/2519

摘要： A tunable dispersion compensator for the compensation of the chromatic dispersion experienced by a single-channel or multi-channel light signal. The compensator includes a plurality of optical structures such as chirped Bragg gratings or combinations thereof, each having a characteristic dispersion profile. An optical coupling arrangement successively propagates the light signal in each of these structures, so that it accumulates the dispersion compensation effect of each. A tuning device jointly tunes the dispersion profile of each optical structure by applying a same tuning force thereto, preferably a temperature gradient.

摘要翻译： 用于补偿单通道或多通道光信号所经受的色散的可调色散补偿器。 补偿器包括多个光学结构，例如啁啾布拉格光栅或其组合，每个具有特征色散轮廓。 光耦合装置依次传播这些结构中的每一个中的光信号，从而累积每个结构的色散补偿效果。 调谐装置通过向其施加相同的调谐力，优选温度梯度来共同调谐每个光学结构的色散轮廓。

公开(公告)号：US20050055340A1

公开(公告)日：2005-03-10

申请号：US10664787

申请日：2003-09-16

申请人： Scott Dresden

发明人： Scott Dresden

IPC分类号： H04B10/2519 ,  G06F17/30 ,  G06F7/00

CPC分类号： G02B6/2932 ,  G02B6/02195 ,  G02B6/29394 ,  G02B6/29395 ,  G06F16/951 ,  H04B10/2519

摘要： The present invention provides an Internet search engine system and method that improves searching for documents or pages by processing the characteristics of a pool of data through a neural network governed by a set of rules and fuzzy logic applications. The rules and applications may be implemented at the input (or low) level or the computational/output (or high) level. Search terms and personal and situational data may activate various rule sets, and learning from human and machine feedback adjust and recombine the rule sets to improve accuracy for future searches as well as reduce computation time.

摘要翻译： 本发明提供一种互联网搜索引擎系统和方法，其通过由一组规则和模糊逻辑应用来管理的神经网络来处理数据池的特征来改进对文档或页面的搜索。 规则和应用可以在输入（或低）级或计算/输出（或高）级实现。 搜索项和个人和情境数据可以激活各种规则集，并且从人和机器反馈的学习调整和重组规则集以提高未来搜索的准确性并减少计算时间。

公开(公告)号：US20040017972A1

公开(公告)日：2004-01-29

申请号：US10390590

申请日：2003-03-17

申请人： Teraxion Inc.

发明人： Sylviane Lelievre ,  Richard L. Lachance ,  Yves Painchaud

IPC分类号： G02B006/34 ,  G02B006/26

CPC分类号： G02B6/2932 ,  G02B6/02195 ,  G02B6/29394 ,  G02B6/29395 ,  G06F17/30864 ,  H04B10/2519

摘要： A tunable dispersion compensator for the compensation of the chromatic dispersion experienced by a single-channel or multi-channel light signal. The compensator includes a plurality of optical structures such as chirped Bragg gratings or combinations thereof, each having a characteristic dispersion profile. An optical coupling arrangement successively propagates the light signal in each of these structures, so that it accumulates the dispersion compensation effect of each. A tuning device jointly tunes the dispersion profile of each optical structure by applying a same tuning force thereto, preferably a temperature gradient.

摘要翻译： 用于补偿单通道或多通道光信号所经受的色散的可调色散补偿器。 补偿器包括多个光学结构，例如啁啾布拉格光栅或其组合，每个具有特征色散轮廓。 光耦合装置依次传播这些结构中的每一个中的光信号，从而累积每个结构的色散补偿效果。 调谐装置通过向其施加相同的调谐力，优选温度梯度来共同调谐每个光学结构的色散轮廓。