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    Optical switch using optical fibers
    1.
    发明授权
    Optical switch using optical fibers 有权
    使用光纤的光开关

    公开(公告)号：US09128252B2

    公开(公告)日：2015-09-08

    申请号：US14244893

    申请日：2014-04-03

    申请人： The Boeing Company

    发明人： Yuanjian Xu ,  Terry Lee Holcomb

    IPC分类号： G02B6/35 ,  G02B23/24

    CPC分类号： G02B6/3572 ,  G02B23/2469 ,  G02B2006/2839

    摘要： A method and apparatus for routing light signals. A light signal is sent into a first optical fiber core in an optical coupler having an input region, a coupling region, and an output region. The first optical fiber core is located in a cladding having a substantially circular cross section. The light signal is coupled between the first optical fiber core and one of the first optical fiber core and a second optical fiber core in the coupling region of the optical coupler based on a position of the coupling region as the light signal travels through the coupling region to the output region of the optical coupler using a switching system configured to move the coupling region between one of a first position and a second position.

    摘要翻译： 一种用于路由光信号的方法和装置。 光信号被发送到具有输入区域，耦合区域和输出区域的光耦合器中的第一光纤芯中。 第一光纤芯位于具有基本圆形横截面的包层中。 当光信号穿过耦合区域时，光信号基于耦合区域的位置耦合在第一光纤芯与第一光纤芯中的一个之间以及光耦合区域的耦合区域中的第二光纤芯 使用配置成在第一位置和第二位置中的一个之间移动耦合区域的开关系统到光耦合器的输出区域。

    All fiber DWDM multiplexer and demultiplexer
    2.
    发明授权
    All fiber DWDM multiplexer and demultiplexer 失效
    所有光纤DWDM复用器和解复用器

    公开(公告)号：US06453094B1

    公开(公告)日：2002-09-17

    申请号：US09773995

    申请日：2001-02-01

    申请人： Chaoyu Yue

    发明人： Chaoyu Yue

    IPC分类号： G02B634

    CPC分类号： G02B6/29317 ,  G02B6/29332 ,  G02B6/29334 ,  G02B6/2938 ,  G02B2006/2839

    摘要： A dense wavelength division multiplexing (DWDM) filter includes an optical fiber coupling device, having at least one multiple core optical fiber fusion coupled to a second optical fiber, and a dual core fiber grating. According to an especially preferred embodiment of the invention, two multiple core fibers are used with each multiple core fiber having a first core with a first effective index of refraction and a first propagation constant and a second core with a second effective index of refraction and a second propagation constant. Such an arrangement ensures a close match in effective index and propagation constant between the respective second cores. The first and second multiple core fibers are aligned and fused together such that the second core of the first multiple core fiber is in sufficient proximity to the second core of the second multiple core fiber as to obtain overlapping mode fields and efficient coupling of propagating optical signals therebetween, while the first core of the first multiple core fiber is sufficiently separated from the first core of the second multiple core fiber as to obtain weak or substantially no coupling of propagating optical signals therebetween. Accordingly, any signals propagating along the first core of the first fiber experience only very low loss, on the order of 0.2 dB. The dual core fiber grating provides wavelength selectivity to accommodate either wavelength addition or wavelength subtraction, depending upon whether a multiplexing or demultiplexing functionality is desired.

    摘要翻译： 密集波分复用（DWDM）滤波器包括具有耦合到第二光纤的至少一个多芯光纤融合器和双芯光纤光栅的光纤耦合器件。 根据本发明的一个特别优选的实施例，使用两个多芯纤维，每个多芯纤维具有第一纤芯，其具有第一有效折射率和第一传播常数，第二纤芯具有第二有效折射率， 第二传播常数。 这样的布置确保了有效索引和相应的第二核之间的传播常数的紧密匹配。 第一和第二多芯纤维被对准并熔合在一起，使得第一多纤芯光纤的第二纤芯足够靠近第二多芯光纤的第二芯，以获得重叠的模场和传播光信号的有效耦合 而第一多芯光纤的第一芯与第二多芯光纤的第一芯足够地分离，以获得它们之间的传播光信号的弱或基本上没有耦合。 因此，沿着第一光纤的第一纤芯传播的任何信号只有非常低的损耗，大约为0.2dB。 双芯光纤光栅提供波长选择性以适应波长加法或波长相减，这取决于是否需要复用或解复用功能。

    GRATING-BASED SENSOR
    4.
    发明申请
    GRATING-BASED SENSOR 有权
    基于磨砂的传感器

    公开(公告)号：US20150338286A1

    公开(公告)日：2015-11-26

    申请号：US14381638

    申请日：2013-03-07

    申请人： OFS Fitel, LLC

    发明人： Matthew J Andrejco ,  David J Kudelko ,  Yaowen Li ,  Man F Yan

    IPC分类号： G01K11/32 ,  G02B6/02 ,  G02B6/38 ,  G01L1/24

    CPC分类号： G01K11/3206 ,  G01L1/246 ,  G02B6/02042 ,  G02B6/02061 ,  G02B6/02076 ,  G02B6/021 ,  G02B6/02123 ,  G02B6/2835 ,  G02B6/3846 ,  G02B2006/2839

    摘要： An optical fiber-based sensor is described that is suitable for operation in a gas-rich environment. The sensor comprises a chamber into which are mounted one or more segments of optical fiber, into which are inscribed a plurality of sensor gratings. Each of the plurality of sensor gratings is configured to have the same wavelength shift over time in response to a change in gas diffusion, such that gas diffusion parameters are excluded in the determination of the respective amount of change in temperature, applied strain, and gas diffusion. Also described is a fiber, and techniques for making same, comprising of cores extend through a common cladding. The cores are doped so as to create, in conjunction with the cladding, a plurality of waveguides having the same wavelength shift over time is response to a change in gas diffusion, but different wavelength shifts in response to changes in other parameters.

    摘要翻译： 描述了适用于在富气环境中运行的基于光纤的传感器。 传感器包括一个室，其中安装有一个或多个光纤段，其中刻有多个传感器光栅。 多个传感器光栅中的每一个被配置为响应于气体扩散的变化而随时间具有相同的波长偏移，使得在确定相应的温度变化量，施加的应变和气体中排除气体扩散参数 扩散。 还描述了一种光纤，并且其制造技术包括芯延伸通过公共包层。 芯被掺杂以便与包层一起产生具有相同波长位移的多个波导随时间的变化响应于气体扩散的变化，但响应于其它参数的变化而发生不同的波长偏移。

    Thermally diffused multi-core waveguide
    5.
    发明申请
    Thermally diffused multi-core waveguide 审中-公开
    热扩散多芯波导

    公开(公告)号：US20030035630A1

    公开(公告)日：2003-02-20

    申请号：US10098926

    申请日：2002-03-16

    发明人： Gerald Meltz

    IPC分类号： G02B006/26

    CPC分类号： G02B6/2835 ,  G02B6/02042 ,  G02B6/1342 ,  G02B6/2552 ,  G02B6/2821 ,  G02B6/29332 ,  G02B2006/2839

    摘要： A thermally diffused dual-core (TDDC) waveguide is provided that has a pair of spaced cores 12,14 disposed within a cladding 16. The waveguide 10 is formed of a glass material having the appropriate dopants to allow light 15 to propagate in either direction along the cores 12,14. The TDDC waveguide is formed by heating a portion 22 of the dual-core waveguide 10 to symmetrically diffuse the dopants of the cores 12,14 into the cladding 16. Consequently, the optical mode fields of the cores spread beyond the optical mode field of each original core such that the optical field in one core 12 excites the optical field in the adjacent core 14 to optically couple the two cores 12,14. The amount of diffusion of the core into the cladding is dependent on the temperature of the heat and the time the heat is applied to the dual-core waveguide. The cores may be diffused so that the cores overlap to thereby create a unitary core. The TDDC waveguide may be used to provide a coupler or wavelocker device.

    摘要翻译： 提供了一种热扩散双芯（TDDC）波导，其具有设置在包层16内的一对间隔开的芯12,14。波导10由具有适当掺杂剂的玻璃材料形成，以允许光15沿任一方向传播 沿芯12,14。 TDDC波导通过加热双芯波导10的一部分22而形成，以将芯12,14的掺杂剂对称地扩散到包层16中。因此，芯的光模场扩展到每一个的光模场以外 使得一个核心12中的光场激发相邻核心14中的光场以光学地耦合两个核12,14。 芯进入包层的扩散量取决于热的温度和加热到双芯波导的时间。 芯可以扩散，使得芯重叠，从而产生整体的芯。 TDDC波导可以用于提供耦合器或波封装置。

    Method of putting a bend into a fiber to make a strain sensor
    6.
    发明授权
    Method of putting a bend into a fiber to make a strain sensor 失效
    将弯曲物置于纤维中以制造应变传感器的方法

    公开(公告)号：US6003340A

    公开(公告)日：1999-12-21

    申请号：US716219

    申请日：1997-01-10

    申请人： Georges Borak ,  Martin Carl Johan Kull

    发明人： Georges Borak ,  Martin Carl Johan Kull

    IPC分类号： C03B37/15 ,  G01B11/16 ,  G01L1/24 ,  G01M11/00 ,  G02B6/02 ,  G02B6/255 ,  G02B6/28 ,  C03B37/14

    CPC分类号： G01L1/242 ,  C03B37/15 ,  G01B11/18 ,  G01L1/245 ,  G02B6/2552 ,  G02B2006/2839 ,  G02B6/02071

    摘要： An optical fiber (7) exhibits varying transmission characteristics in different strain states and can have an S-shaped microbend. For producing such a fiber it is heated locally in a small region, as viewed in the longitudinal direction of the fiber, and then the portions of the fiber (1) located at the two sides of the heated region are displaced in relation to each other in a transverse direction in relation to the longitudinal direction of the fiber. It can be performed in a conventional fusion-splicing apparatus for optical fibers. Alternatively, a laser can be used as a heating source, what is particularly suitable for processing optical fibers having longitudinal cavities in order to infer to it similar transmission characteristics. The optical fibers produced by this method are suited for use as sensors, e.g. strain gauges.

    摘要翻译： PCT No.PCT / SE95 / 00265 Sec。 371日期1997年1月10日 102（e）日期1997年1月10日PCT提交1995年3月15日PCT公布。 WO95 / 25258 PCT公开号 日期1995年9月21日光纤（7）在不同的应变状态下表现出变化的透射特性，并且可以具有S形微弯曲。 为了制造这样的纤维，在纤维的长度方向观察时，在小的区域被局部加热，然后位于加热区域的两侧的纤维（1）的部分相对于彼此位移 在相对于纤维的纵向的横向方向上。 它可以在常规的光纤熔接装置中进行。 或者，激光可以用作加热源，特别适用于处理具有纵向空腔的光纤，以便推断其具有相似的传输特性。 通过该方法制造的光纤适合用作传感器，例如， 应变计

    Double core, active fiber optical amplifier having a wide band signal wavelength
    8.
    发明授权
    Double core, active fiber optical amplifier having a wide band signal wavelength 失效
    具有宽带信号波长的双核有源光纤放大器

    公开(公告)号：US5218665A

    公开(公告)日：1993-06-08

    申请号：US954468

    申请日：1992-09-30

    申请人： Giorgio Grasso ,  Paul L. Scrivener

    发明人： Giorgio Grasso ,  Paul L. Scrivener

    IPC分类号： G02B6/28 ,  G02B6/34 ,  H01S3/067

    CPC分类号： H01S3/06754 ,  G02B6/283 ,  G02B6/2835 ,  H01S3/06708 ,  G02B2006/2839 ,  H01S2301/02 ,  H01S2301/04 ,  H01S3/06729 ,  H01S3/06737

    摘要： An optical amplifier for telecommunication lines over which communication signals at a predetermined wavelength are transmitted. The amplifier has portions of two optically coupled fibers, at least one of the fibers being an active fiber, interconnected by a length of active fiber connected to the one fiber of successive portions. Preferably, the active fibers are doped with erbium, and the coupling wavelength of the two fibers is different from the communication signal wavelength so that energy of the spontaneous emission of erbium is transferred from the one fiber to the other fiber and absorbed in the latter permitting amplification of communication signals in a range of wavelengths corresponding to the tolerance range of commercial laser signal emitters.

    摘要翻译： 一种用于电信线路的光放大器，通过该光放大器传送预定波长的通信信号。 放大器具有两个光耦合光纤的部分，至少一个光纤是有源光纤，通过连接到连续部分的一个光纤的一段有源光纤互连。 优选地，有源光纤掺杂有铒，并且两个光纤的耦合波长不同于通信信号波长，使得铒的自发发射的能量从一个光纤转移到另一个光纤并在后者中被吸收 在对应于商业激光信号发射器的公差范围的波长范围内的通信信号的放大。

    Method of forming fused coupler
    9.
    发明授权
    Method of forming fused coupler 有权
    形成熔合耦合器的方法

    公开(公告)号：US09366821B2

    公开(公告)日：2016-06-14

    申请号：US13410817

    申请日：2012-03-02

    申请人： Terry Patrick Bowen

    发明人： Terry Patrick Bowen

    IPC分类号： G02B6/26 ,  G02B6/28 ,  G02B6/02

    CPC分类号： G02B6/2835 ,  G02B6/02042 ,  G02B6/02328 ,  G02B6/02338 ,  G02B2006/2839

    摘要： A method of forming a coupler, the method comprising: (a) heating a portion of an optical fiber having multiple cores and an initial diameter; and (b) applying a tensile force across the portion such that the portion stretches, thereby reducing the initial diameter to a reduced diameter sufficient to cause optical signals propagating in one or more of the multiple cores to leave their respective cores and enter other cores of the fiber.

    摘要翻译： 一种形成耦合器的方法，所述方法包括：（a）加热具有多个芯的初始直径的光纤的一部分; 并且（b）在所述部分上施加张力使得所述部分伸展，从而将所述初始直径减小到足以使所述多个芯中的一个或多个中的光信号传播的直径减小以离开它们各自的芯并进入其中的其它芯 纤维。

    OPTICAL SWITCH USING OPTICAL FIBERS
    10.
    发明申请
    OPTICAL SWITCH USING OPTICAL FIBERS 审中-公开
    光纤开关使用光纤

    公开(公告)号：US20150205049A1

    公开(公告)日：2015-07-23

    申请号：US14244893

    申请日：2014-04-03

    申请人： The Boeing Company

    发明人： Yuanjian Xu ,  Terry Lee Holcomb

    IPC分类号： G02B6/35 ,  G02B6/255

    CPC分类号： G02B6/3572 ,  G02B23/2469 ,  G02B2006/2839

    摘要： A method and apparatus for routing light signals. A light signal is sent into a first optical fiber core in an optical coupler having an input region, a coupling region, and an output region. The first optical fiber core is located in a cladding having a substantially circular cross section. The light signal is coupled between the first optical fiber core and one of the first optical fiber core and a second optical fiber core in the coupling region of the optical coupler based on a position of the coupling region as the light signal travels through the coupling region to the output region of the optical coupler using a switching system configured to move the coupling region between one of a first position and a second position.

    摘要翻译： 一种用于路由光信号的方法和装置。 光信号被发送到具有输入区域，耦合区域和输出区域的光耦合器中的第一光纤芯中。 第一光纤芯位于具有基本圆形横截面的包层中。 当光信号穿过耦合区域时，光信号基于耦合区域的位置耦合在第一光纤芯与第一光纤芯中的一个之间以及光耦合区域的耦合区域中的第二光纤芯 使用配置成在第一位置和第二位置中的一个之间移动耦合区域的开关系统到光耦合器的输出区域。