公开(公告)号：US06289699B1

公开(公告)日：2001-09-18

申请号：US09035919

申请日：1998-03-06

申请人： Anthony S. Kewitsch ,  George A. Rakuljic ,  Amnon Yariv

发明人： Anthony S. Kewitsch ,  George A. Rakuljic ,  Amnon Yariv

IPC分类号： C03B3715

CPC分类号： G02B6/29334 ,  G02B6/02085 ,  G02B6/021 ,  G02B6/02109 ,  G02B6/02114 ,  G02B6/02133 ,  G02B6/02138 ,  G02B6/02152 ,  G02B6/022 ,  G02B6/02204 ,  G02B6/12007 ,  G02B6/2835 ,  G02B6/29383 ,  H04J14/0201 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0219

摘要： A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is recorded in the coupler waist The grating filters and transfers energy within a particular range of wavelengths from a first waveguide to a second waveguide. Transversely asymmetric gratings provide an efficient means of energy transfer. The coupler can be used to combine or multiplex a plurality of lasers operating at slightly different wavelengths into a single fiber. Other embodiments such as a dispersion compensator and gain flattening filter are disclosed.

摘要翻译： 公开了一种在光通信领域具有各种应用的波长选择性光纤耦合器。 耦合器由相邻的不同波导组成。 光诱导的永久折射率光栅被记录在耦合器腰部中。光栅在从第一波导到第二波导的特定波长范围内过滤和传递能量。 横向不对称光栅提供了有效的能量传递手段。 耦合器可用于将以稍微不同的波长工作的多个激光器组合或多路复用到单个光纤中。 公开了诸如色散补偿器和增益平坦化滤光器的其它实施例。

公开(公告)号：US06244756B1

公开(公告)日：2001-06-12

申请号：US09365831

申请日：1999-08-03

申请人： Cary Bloom

发明人： Cary Bloom

IPC分类号： G02B636

CPC分类号： G02B6/3862 ,  G02B6/2551 ,  G02B6/2552 ,  G02B6/2835 ,  G02B6/36 ,  G02B6/3837 ,  G02B6/3855 ,  G02B6/3861 ,  G02B6/3887 ,  G02B6/4248

摘要： An apparatus includes a device having at least one exposed region. First and second metal seals bond and/or secure with, and surround, the exposed region of the device. An enclosure seals the device between the first and second metal seals. The enclosure has a first substrate and a second substrate, each with end surfaces including a deformable metal layer. The deformable metal layer seals the corresponding surfaces in response to the application of a compressive force and/or energy to the first and second substrates. The enclosure may be constructed to include a cavity, and/or constructed of relative short length. The enclosure may be used to secure to a portion of an optical fiber, fiber optic device and/or device, and/or may be used to encase a portion or all of an optical fiber, fiber optic device and/or device.

摘要翻译： 一种装置包括具有至少一个暴露区域的装置。 第一和第二金属密封件与设备的暴露区域结合和/或固定和围绕。 外壳在第一和第二金属密封件之间密封装置。 外壳具有第一基板和第二基板，每个基板具有包括可变形金属层的端面。 响应于对第一和第二基板施加压缩力和/或能量，可变形的金属层密封相应的表面。 外壳可以被构造成包括空腔和/或由相对短的长度构造。 外壳可以用于固定到光纤，光纤设备和/或设备的一部分，和/或可以用于封装光纤，光纤设备和/或设备的一部分或全部。

公开(公告)号：US06212318B1

公开(公告)日：2001-04-03

申请号：US09421173

申请日：1999-10-19

申请人： Colm V. Cryan

发明人： Colm V. Cryan

IPC分类号： G02B634

CPC分类号： G02B6/2932 ,  G02B6/2835 ,  G02B6/29319 ,  G02B6/29332 ,  G02B6/29383

摘要： An optical fiber add/drop filter includes a first and second elongate photosensitive optical fiber, each optical fiber having opposed first and second ends and including a core and a cladding. The cladding of the first optical fiber is optically coupled to the cladding of the second optical fiber at a coupler. A first fiber Bragg grating is etched into a second end of the first fiber for converting light propagating in a first direction through either of the core of cladding of the first fiber into light propagating in an opposite direction through the other of said core and cladding of said second fiber. A second fiber Bragg grating is etched into a first end of the second fiber for converting light propagating in a first direction either of the core or cladding of the second fiber into light propagating in an opposite direction through the other of the core and cladding of the second fiber. The first and second fiber Bragg gratings are located to opposite sides of the coupler. The add/drop filter of the present invention may be cascaded to form an optical add/drop multiplexer.

摘要翻译： 一种光纤分插滤波器包括第一和第二细长光敏光纤，每个光纤具有相对的第一和第二端并且包括芯和包层。 第一光纤的包层在耦合器处光耦合到第二光纤的包层。 第一光纤布拉格光栅被蚀刻到第一光纤的第二端中，用于将在第一方向上传播的光通过第一光纤的包芯中的任一个转变成通过另一个所述芯和包层的相反方向传播的光 第二根纤维。 第二光纤布拉格光栅被蚀刻到第二光纤的第一端中，用于将在第二光纤的芯或包层的第一方向上传播的光转换成沿相反方向传播的光，穿过第二光纤的芯和包层中的另一个 第二根纤维。 第一和第二光纤布拉格光栅位于耦合器的相对侧。 本发明的分插滤波器可以级联以形成光分插复用器。

公开(公告)号：US06181466B2

公开(公告)日：2001-01-30

申请号：US09138361

申请日：1998-08-21

申请人： Federico Franzoso ,  Aurelio Pianciola

发明人： Federico Franzoso ,  Aurelio Pianciola

IPC分类号： H01S300

CPC分类号： G02B6/2835

摘要： A twin coupler system includes first and second optical couplers that couple a multimode pump fiber into a double-clad active primary fiber. The pump fiber carries multimode pump power from a multimode source. The primary fiber, on the other hand, carries optical information signals on the single mode core that are amplified through the pump power. A system and method for manufacturing the twin coupler system constructs the first coupler by preparing first portions of the primary and pump fibers for coupling and performing fusion and tapering operations on the primary and pump fibers at the first portions, and constructs the second coupler by preparing second portions of the primary and pump fibers for coupling and performing fusion and tapering operations on the primary and pump fibers at the second portions. The fusion and tapering operations at the second portions are dependent upon the fusion and tapering operations performed at the first portions so as to achieve a maximum coupling efficiency of the pump power from the pump fiber to the primary fiber for the entire twin coupler system.

摘要翻译： 双耦合器系统包括将多模泵浦光纤耦合到双包层活性主光纤中的第一和第二光耦合器。 泵浦光纤从多模源提供多模泵浦功率。 另一方面，主光纤在单模核上承载通过泵浦功率放大的光信息信号。 用于制造双耦合器系统的系统和方法通过制备初级和泵浦光纤的第一部分来构造第一耦合器，用于在第一部分处耦合并执行初级和泵浦光纤上的熔融和锥形操作，并通过制备第二耦合器构建第二耦合器 主和泵浦纤维的第二部分用于在第二部分处耦合并在主纤维和泵浦纤维上进行熔融和锥形操作。 在第二部分处的熔化和锥形操作取决于在第一部分执行的熔化和锥形操作，以便实现整个双连接器系统的泵功率从泵浦光纤到主光纤的最大耦合效率。

公开(公告)号：US06177985B1

公开(公告)日：2001-01-23

申请号：US08884655

申请日：1997-06-27

申请人： Cary Bloom

发明人： Cary Bloom

IPC分类号： G01N2100

CPC分类号： G01M11/33 ,  G01M11/31 ,  G01M11/39 ,  G02B6/2551 ,  G02B6/2835 ,  G02B6/36 ,  G02B6/3837 ,  G02B6/3862 ,  G02B6/3887 ,  G02B6/3897 ,  G02B6/4248

摘要： An optical switching assembly selectively connects an optical source and a detector to at least one fiber optic device. The assembly includes first and second groups of optical paths, and first and second optical switches. The first optical switch selectively connects the optical source to one end of the first group of optical paths, and the second optical switch selectively connects the detector to the one end of the second group of optical paths. The assembly laos includes a plurality of junctions, each having a lead associated therewith, and one or more of the leads are connected to the fiber optic device. The junctions connect the other end of the first group of optical paths and the other end of the second group of optical paths to the lead to facilitate the testing of the fiber optic device.

摘要翻译： 光学开关组件将光源和检测器选择性地连接到至少一个光纤装置。 组件包括第一和第二组光路，以及第一和第二光开关。 第一光开关选择性地将光源连接到第一组光路的一端，而第二光开关选择性地将检测器连接到第二组光路组的一端。 组装老挝包括多个接头，每个接头具有与之相关联的引线，并且一个或多个引线连接到光纤器件。 接头将第一组光路的另一端和第二组光路组的另一端连接到引线，以便于光纤设备的测试。

公开(公告)号：US06169830A

公开(公告)日：2001-01-02

申请号：US09128476

申请日：1998-08-04

申请人： Anthony S. Kewitsch ,  George A. Rakuljic ,  Doruk Engin ,  Seth J. Greenberg ,  Phil A. Willems ,  Xiaolin Tong

发明人： Anthony S. Kewitsch ,  George A. Rakuljic ,  Doruk Engin ,  Seth J. Greenberg ,  Phil A. Willems ,  Xiaolin Tong

IPC分类号： G02B634

CPC分类号： G02B6/02204 ,  G02B6/02085 ,  G02B6/02109 ,  G02B6/02114 ,  G02B6/02133 ,  G02B6/02138 ,  G02B6/02152 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/12007 ,  G02B6/2835

摘要： Advantageous methodologies are disclosed for embedding periodic patterns in optical waveguide elements such as optical fibers. Polarization independence in an elongated waist region of an add/drop coupler can be established by measuring polarization characteristics during fusion and elongation, and controlling the elongation to impart a cross-sectional shape, such as a hybrid dumbbell-ellipsoid. Polarization dependence can also be minimized by angular deformation of the elements along the light transmissive axis. To write a pattern, an element having potential photosensitivity is markedly photosensitized in a hydrogen or deuterium environment pressurized to about 1000 to 5000 psi and a scanning UV beam that is transmitted through a photo mask and impinges on the coupler waist as the in-diffused gas is constantly replenished. Dimensional variations in the element which can affect spectral bandwidth are sensed by writing a preliminary test pattern in the element and then locally measuring the spectral properties of the test pattern and adjusting the local levels of background index of refractions so that the modal index of refraction is substantially constant along the length of the pattern. A relatively wide scanning writing beam tracks on a narrower waveguide element despite positional imprecision and temporal shifting by using a feedback signal derived from fluorescence induced in the element. To apodize the grating in accordance with a selected function, a constant power beam is directed through a rotating half-wave plate and divided by a polarizing beam splitter into two beams having oppositely varying DC amplitude characteristics. The two beams are separately varied to produce the desired apodization profile of the grating.

摘要翻译： 公开了在诸如光纤的光波导元件中嵌入周期性图案的有利方法。 通过在熔融和伸长期间测量极化特性，并控制延伸率以赋予横截面形状，例如混合哑铃 - 椭圆体，可以建立加/减耦合器的细长腰部区域中的极化独立性。 也可以通过沿着透光轴的元件的角度变形来最小化极化依赖性。 为了编写图案，具有潜在光敏性的元件在加压至约1000至5000psi的氢或氘环境中被显着光敏化，并且扫描UV光束透射通过光掩模并且作为扩散气体撞击在耦合器的腰部上 不断补充。 通过在元素中写入初步测试图案然后局部测量测试图案的光谱特性并调整折射背景指数的局部水平，以便使模态折射率为 沿着图案的长度基本上恒定。 尽管通过使用从元件中诱导的荧光得到的反馈信号，位置不精确和时间偏移，相对宽的扫描写入光束在较窄的波导元件上轨迹。 为了根据所选择的功能使光栅变迹，恒定功率光束通过旋转半波片并被偏振分束器分成两束，具有相反变化的直流振幅特性。 两个光束分开变化，以产生光栅所需的变迹曲线。

公开(公告)号：US6160932A

公开(公告)日：2000-12-12

申请号：US249899

申请日：1999-02-16

申请人： Chi-hung Huang ,  Joseph Chon ,  Sheau Sheng Chen

发明人： Chi-hung Huang ,  Joseph Chon ,  Sheau Sheng Chen

IPC分类号： G02B6/28 ,  G02B6/34 ,  G02B6/293

CPC分类号： G02B6/2938 ,  G02B6/2835 ,  G02B6/29355 ,  G02B6/29398

摘要： A wavelength division multiplexer (WDM) utilizes cascaded interferometric devices, where the two output branches of interferometric devices in each new stage are each coupled to an additional stage of interferometric devices having the same wavelength separation or channel spacing, which suppresses the sidelobes of the signals from preceding stage of interferometric devices. In one embodiment, the interferometric devices are unbalanced Mach-Zehnder Interferometers.

摘要翻译： 波分多路复用器（WDM）利用级联干涉测量装置，其中每个新阶段的干涉装置的两个输出分支各自耦合到具有相同波长间隔或信道间隔的干涉装置的附加级，其抑制信号的旁瓣 从干涉仪装置的前一阶段。 在一个实施例中，干涉仪是不平衡的马赫 - 曾德干涉仪。

公开(公告)号：US6085001A

公开(公告)日：2000-07-04

申请号：US988761

申请日：1997-12-11

申请人： Richard W. Belt

发明人： Richard W. Belt

IPC分类号： G02B6/28 ,  G02B6/38 ,  G02B6/42

CPC分类号： G02B6/2835 ,  G02B6/3801 ,  G02B6/4248

摘要： A hermetically sealed fiber optic coupler for packaging planar coupled optical fibers. The device includes at least one first optical fiber having a glass-based portion having a first free end and a second optical fiber having a glass-based portion having a second free end joined to the first free end of the glass-based portion of the first optical fiber by said planar coupler to form an end joint. The device further includes an outer chamber having at least one open end, the outer chamber surrounding the end joint, the outer chamber and the end joint being hermetically sealed with a thermosetting plastic.

摘要翻译： 用于封装平面耦合光纤的气密密封光纤耦合器。 该装置包括至少一个第一光纤，其具有具有第一自由端的玻璃基部分和具有玻璃基部分的第二光纤，第二光纤具有第二自由端，该第二自由端连接到第一自由端的玻璃基部分的第一自由端 第一光纤由所述平面耦合器形成端部接头。 该装置还包括具有至少一个开口端的外部腔室，围绕端部接头的外部腔室，外部腔室和端部接头用热固性塑料气密密封。

公开(公告)号：US6018965A

公开(公告)日：2000-02-01

申请号：US137849

申请日：1998-08-21

申请人： Cary Bloom

发明人： Cary Bloom

IPC分类号： G02B6/255 ,  G02B6/28 ,  G02B6/36

CPC分类号： G02B6/2552 ,  G02B6/2835

摘要： Fused biconical tapered couplers formed from the pulling of heated optical fibers have controllable coupling ratios by dynamically adjusting the heat intensity and pull speed during fabrication. Fiber coupler fabrication begins by arranging two optical fibers, heating the optical fibers using a heat source a predetermined distance from the optical fibers, and pulling the optical fibers at an initial pulling velocity as the heated optical fibers soften. The heat source is moved away from the optical fibers and the pulling velocity is selectively reduced in response to a substantial change in the detected coupling ratio. Changes in the coupling ratio are controlled by selectively reducing the pulling speed and the heat intensity to a point where the pulling of the optical fibers may be halted, and the heat removed, without a substantial change in the detected coupling ratio. The coupling ratio may be monitored at different wavelengths for fabrication of wideband couplers and wavelength division multiplexers.

摘要翻译： 通过加热光纤的拉动形成的熔融双锥形锥形耦合器通过在制造期间动态地调节热强度和拉速而具有可控的耦合比。 光纤耦合器制造通过布置两根光纤开始，使用距离光纤预定距离的热源加热光纤，并且随着加热的光纤软化而以初始拉伸速度拉动光纤。 热源远离光纤移动，并且响应于检测到的耦合比的实质变化，选择性地减小拉速。 耦合比的变化通过选择性地将牵引速度和热强度降低到可以停止光纤的拉动并且除去热量的点，而不检测到的耦合比例的实质变化来控制。 可以以不同的波长监测耦合比，以制造宽带耦合器和波分复用器。

公开(公告)号：US5818584A

公开(公告)日：1998-10-06

申请号：US776082

申请日：1997-01-17

申请人： Fran.cedilla.ois Gonthier ,  Suzanne Lacroix

发明人： Fran.cedilla.ois Gonthier ,  Suzanne Lacroix

IPC分类号： G01B9/02 ,  G02B6/28

CPC分类号： G02B6/2835 ,  G02B6/2856

摘要： A multiport optical waveguide interferometer is provided which comprises at least two N.times.N couplers arranged in series on an array of fibers and separated by a short region such that the phase shift between the couplers is approximately equal to .pi.. A method for making such an interferometer comprises forming such couplers, for instance by a fused taper method with appropriate twist, where the fused, tapered and twisted zone is longer than usual and wherein the couplers are formed in series within such zone, separated by short regions of between 1-2 mm, and adjusted to achieve the flattest possible wavelength response.

摘要翻译： PCT No.PCT / CA95 / 00421 Sec。 371日期1997年1月17日 102（e）日期1997年1月17日PCT提交1995年7月17日PCT公布。 出版物WO96 / 03668 日期1996年2月8日提供了一种多端口光波导干涉仪，其包括至少两个NxN耦合器，其串联布置在光纤阵列上并被短区域分开，使得耦合器之间的相移近似等于pi。 用于制造这样的干涉仪的方法包括通过例如通过具有适当扭转的熔融锥形方法形成这种耦合器，其中熔融的，锥形的和扭曲的区域比通常长，并且其中耦合器在该区域内串联形成，由短路分开 区域在1-2毫米之间，并调整以达到最平坦的可能的波长响应。