公开(公告)号：US07245795B2

公开(公告)日：2007-07-17

申请号：US11272871

申请日：2005-11-15

申请人： Robert Walker ,  Stephen J. Mihailov ,  Ping Lu ,  Dan Grobnic ,  Xiaoli Dai ,  Huimin Ding ,  George Henderson ,  Christopher Smelser

发明人： Robert Walker ,  Stephen J. Mihailov ,  Ping Lu ,  Dan Grobnic ,  Xiaoli Dai ,  Huimin Ding ,  George Henderson ,  Christopher Smelser

IPC分类号： G02B6/12

CPC分类号： G01J1/04 ,  G01J1/0204 ,  G01J1/0407 ,  G01J1/0477 ,  G01J1/4228 ,  G01J9/00 ,  G02B6/02085 ,  G02B6/29323 ,  G02B6/29385 ,  G02B6/4215

摘要： The invention relates to an optical waveguide device for monitoring a characteristics of light, e.g. a wavelength. The device incorporates a waveguide, such as an optical fiber, with an embedded tilted Bragg grating operating in a regime of wavelength detuning. The grating is designed to disperse light azimuthally in two or more different directions about the fiber axis, said directions changing with wavelength. A photodetector array is provided for detecting the azimuthal distribution of light. A processor coupled to the photodetector array determines wavelength information from the detected azimuthal distribution of the out-coupled light.

公开(公告)号：US07379643B2

公开(公告)日：2008-05-27

申请号：US11243193

申请日：2005-10-05

申请人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

发明人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

IPC分类号： G02B6/04

CPC分类号： G02B6/02138 ,  G02B6/021 ,  G02B6/02147

摘要： A retro-reflective sensor for sensing mechanical, chemical or temperature related information, is disclosed. The sensor is formed of an optical waveguide suitable for use in-situ in a high temperature environment having a Bragg grating written into a core region thereof with short-pulsed electromagnetic radiation, said optical waveguide having a glass transition temperature substantially higher than that of silica. Preferably the sensor is written into a length of sapphire fiber or within a zirconium waveguide. Preferably the pulse duration of the short pulsed electromagnetic radiation is less than 500 picoseconds.

摘要翻译： 公开了一种用于感测机械，化学或温度相关信息的回射传感器。 传感器由适合在高温环境中原位使用的光波导形成，其中布拉格光栅用短脉冲电磁辐射写入其核心区域，所述光波导的玻璃化转变温度明显高于二氧化硅 。 优选地，传感器被写入蓝宝石光纤的长度或在锆波导内。 优选地，短脉冲电磁辐射的脉冲持续时间小于500皮秒。

公开(公告)号：US07031571B2

公开(公告)日：2006-04-18

申请号：US10803890

申请日：2004-03-19

申请人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

发明人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

IPC分类号： G02B6/34

CPC分类号： G02B6/02138 ,  G02B5/1857 ,  G02B6/021 ,  G02B6/124

摘要： A novel Bragg grating filter in optical waveguiding fiber with suppressed cladding mode coupling and method of producing same is disclosed. The novel grating structure is induced in both the core and the cladding of the optical fiber irrespective of the photosensitivity of the core or cladding to actinic radiation. Such core and cladding of the optical fiber need not be chemically doped to support the grating. The method incorporates an ultra short duration pulse laser source. Electromagnetic radiation provided from the laser propagates to a diffractive element positioned a specific distance to the target material such that the diffracted electromagnetic radiation forms a 2-beam interference pattern, the peaks of which are sufficiently intense to cause a change in index of refraction.

摘要翻译： 公开了一种具有抑制包层模耦合的光波导纤维中的新型布拉格光栅滤波器及其制造方法。 不管芯或包层对光化辐射的光敏性如何，在光纤的芯和包层中都引入新颖的光栅结构。 光纤的这种芯和包层不需要化学掺杂以支持光栅。 该方法结合了超短脉冲激光源。 从激光器提供的电磁辐射传播到与目标材料相距特定距离的衍射元件，使得衍射的电磁辐射形成2光束干涉图案，其峰值足够强以引起折射率的变化。

公开(公告)号：US20070110367A1

公开(公告)日：2007-05-17

申请号：US11272871

申请日：2005-11-15

申请人： Robert Walker ,  Stephen Mihailov ,  Ping Lu ,  Dan Grobnic ,  Xiaoli Dai ,  Huimin Ding ,  George Henderson ,  Christopher Smelser

发明人： Robert Walker ,  Stephen Mihailov ,  Ping Lu ,  Dan Grobnic ,  Xiaoli Dai ,  Huimin Ding ,  George Henderson ,  Christopher Smelser

IPC分类号： G02B6/34 ,  G02B6/42

CPC分类号： G01J1/04 ,  G01J1/0204 ,  G01J1/0407 ,  G01J1/0477 ,  G01J1/4228 ,  G01J9/00 ,  G02B6/02085 ,  G02B6/29323 ,  G02B6/29385 ,  G02B6/4215

摘要： The invention relates to an optical waveguide device for monitoring a characteristics of light, e.g. a wavelength. The device incorporates a waveguide, such as an optical fiber, with an embedded tilted Bragg grating operating in a regime of wavelength detuning. The grating is designed to disperse light azimuthally in two or more different directions about the fiber axis, said directions changing with wavelength. A photodetector array is provided for detecting the azimuthal distribution of light. A processor coupled to the photodetector array determines wavelength information from the detected azimuthal distribution of the out-coupled light.

摘要翻译： 本发明涉及一种用于监测光的特性的光波导器件，例如， 一个波长。 该器件包括诸如光纤的波导，其具有以波长失谐的状态工作的嵌入式倾斜布拉格光栅。 光栅被设计成围绕光纤轴在两个或更多个不同方向上以方位角分散光，所述方向随着波长而变化。 提供了用于检测光的方位角分布的光电检测器阵列。 耦合到光电检测器阵列的处理器根据检测出的外耦合光的方位分布来确定波长信息。

公开(公告)号：US20060029322A1

公开(公告)日：2006-02-09

申请号：US11243193

申请日：2005-10-05

申请人： Stephen Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

发明人： Stephen Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

IPC分类号： G02B6/00

CPC分类号： G02B6/02138 ,  G02B6/021 ,  G02B6/02147

摘要： A retro-reflective sensor for sensing mechanical, chemical or temperature related information, is disclosed. The sensor is formed of an optical waveguide suitable for use in-situ in a high temperature environment having a Bragg grating written into a core region thereof with short-pulsed electromagnetic radiation, said optical waveguide having a glass transition temperature substantially higher than that of silica. Preferably the sensor is written into a length of sapphire fiber or within a zirconium waveguide. Preferably the pulse duration of the short pulsed electromagnetic radiation is less than 500 picoseconds.

摘要翻译： 公开了一种用于感测机械，化学或温度相关信息的回射传感器。 传感器由适合在高温环境中原位使用的光波导形成，其中布拉格光栅用短脉冲电磁辐射写入其核心区域，所述光波导的玻璃化转变温度明显高于二氧化硅 。 优选地，传感器被写入蓝宝石光纤的长度或在锆波导内。 优选地，短脉冲电磁辐射的脉冲持续时间小于500皮秒。

公开(公告)号：US20050232541A1

公开(公告)日：2005-10-20

申请号：US11104545

申请日：2005-04-13

申请人： Stephen Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

发明人： Stephen Mihailov ,  Dan Grobnic ,  Christopher Smelser ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

IPC分类号： G02B6/02 ,  G02B6/34

CPC分类号： G02B6/021 ,  G02B6/02133 ,  G02B6/02142 ,  G02B6/02147

摘要： A retro-reflective sensor for sensing mechanical, chemical or temperature related information, is disclosed. The sensor is formed of an optical waveguide suitable for use in-situ in a high temperature environment having a Bragg grating written into a core region thereof with short-pulsed electromagnetic radiation, said optical waveguide having a glass transition temperature substantially higher than that of silica. Preferably the sensor is written into a length of sapphire fiber or within a zirconium waveguide. Preferably the pulse duration of the short pulsed electromagnetic radiation is less than 500 picoseconds.

摘要翻译： 公开了一种用于感测机械，化学或温度相关信息的回射传感器。 传感器由适合在高温环境中原位使用的光波导形成，其中布拉格光栅用短脉冲电磁辐射写入其核心区域，所述光波导的玻璃化转变温度明显高于二氧化硅 。 优选地，传感器被写入蓝宝石光纤的长度或在锆波导内。 优选地，短脉冲电磁辐射的脉冲持续时间小于500皮秒。

公开(公告)号：US06993221B2

公开(公告)日：2006-01-31

申请号：US10639486

申请日：2003-08-13

申请人： Stephen J. Mihailov ,  Christopher W. Smelser ,  Ping Lu ,  Robert B. Walker ,  Dan Grobnic ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

发明人： Stephen J. Mihailov ,  Christopher W. Smelser ,  Ping Lu ,  Robert B. Walker ,  Dan Grobnic ,  Huimin Ding ,  George Henderson ,  Xiaoli Dai

IPC分类号： G02B6/34

CPC分类号： G02B6/02138 ,  G02B5/1857 ,  G02B6/124 ,  G02B2006/02161

摘要： A novel method and apparatus for varying the index of refraction of a material using an interference pattern is disclosed. The method and apparatus incorporate an ultra short duration pulse laser source. Electromagnetic radiation provided from the laser propagates to a diffractive element positioned in close proximity to the target material. The diffracted electromagnetic radiation forms an interference pattern, the peaks of which are sufficiently intense to cause a change in index of refraction.

摘要翻译： 公开了一种使用干涉图案改变材料的折射率的新颖方法和装置。 该方法和装置结合了超短脉冲激光源。 从激光器提供的电磁辐射传播到靠近目标材料定位的衍射元件。 衍射电磁辐射形成干涉图案，其峰值足够强烈以引起折射率的变化。

公开(公告)号：US20070154143A1

公开(公告)日：2007-07-05

申请号：US11683070

申请日：2007-03-07

申请人： Stephen Mihailov ,  Christopher Smelser ,  Dan Grobnic ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  Gino Cuglietta ,  Xiaoli Dai

发明人： Stephen Mihailov ,  Christopher Smelser ,  Dan Grobnic ,  Robert Walker ,  Ping Lu ,  Huimin Ding ,  Gino Cuglietta ,  Xiaoli Dai

IPC分类号： G02B6/34

CPC分类号： G02B6/02114 ,  G02B6/13

摘要： A method of increasing the refractive index in a photosensitive glass is disclosed so as to induce an refractive index change of at least 10−5 within a region of the glass. The method includes the step of providing a hydrogen or deuterium loaded doped glass material wherein a dopant within the glass is photosensitive to infrared radiation in the presence of hydrogen or deuterium. The hydrogen or deuterium loaded doped glass is subsequently irradiated with femtosecond pulses of infrared light having an intensity of at least 109 W/cm2 and less than 5×1013 W/cm2.

摘要翻译： 公开了增加感光玻璃中的折射率的方法，以便在玻璃的区域内引起至少10 -5的折射率变化。 该方法包括提供氢或氘负载的掺杂玻璃材料的步骤，其中玻璃内的掺杂剂在氢或氘的存在下对红外辐射感光。 随后用强度为至少10×10 2 / cm 2以上且小于5×10 13的红外光的飞秒脉冲照射加载氢或氘的掺杂玻璃 W / cm 2 。

公开(公告)号：US07567734B2

公开(公告)日：2009-07-28

申请号：US12222392

申请日：2008-08-08

申请人： Xiaoli Dai ,  Stephen J. Mihailov ,  Robert B. Walker ,  Chantal Blanchetiere ,  Claire Callender ,  Huimin Ding ,  Ping Lu ,  Dan Grobnic ,  Christopher W. Smelser ,  Gino Cuglietta

发明人： Xiaoli Dai ,  Stephen J. Mihailov ,  Robert B. Walker ,  Chantal Blanchetiere ,  Claire Callender ,  Huimin Ding ,  Ping Lu ,  Dan Grobnic ,  Christopher W. Smelser ,  Gino Cuglietta

IPC分类号： G02B6/00 ,  G02B6/26

CPC分类号： G01N21/4133 ,  G01N2021/458 ,  G02B2006/12107

摘要： An optical sensor for sensing information relating to an analyte liquid or gas, has a a planar substrate having a refractive index nc. The planar substrate supports a ridge waveguide having an unclad top portion having a refractive index nr. The substrate serves as cladding layer for the ridge waveguide at a location where the ridge waveguide contacts the substrate. A Bragg grating inscribed in the ridge waveguide has two modes for providing information relating to both temperature and refractive index of the surrounding analyte liquid or gas. A cladding mode has a different response to the analyte when compared to a Bragg resonance response. Both modes have a same reaction to temperature, wherein said Bragg grating is formed within the unclad region of ridge waveguide, wherein nc.

摘要翻译： 用于感测与分析物液体或气体有关的信息的光学传感器具有折射率nc的平面基板。 平面基板支撑具有折射率nr的未包层顶部的脊波导。 衬底用作脊波导在脊波导接触衬底的位置处的包覆层。 刻在脊波导中的布拉格光栅具有两种模式，用于提供与周围分析物液体或气体的温度和折射率相关的信息。 当与布拉格共振响应相比时，包层模式对分析物具有不同的响应。 两种模式对温度具有相同的反应，其中所述布拉格光栅形成在脊波导的未包围区域内，其中nc < 有利的是，可以仅使用单个布拉格光栅来感测多个参数。

公开(公告)号：US20080310789A1

公开(公告)日：2008-12-18

申请号：US12169920

申请日：2008-07-09

申请人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher W. Smelser ,  Robert B. Walker ,  Ping Lu ,  Xiaoli Dai ,  Huimin Ding ,  Gino Cuglietta

发明人： Stephen J. Mihailov ,  Dan Grobnic ,  Christopher W. Smelser ,  Robert B. Walker ,  Ping Lu ,  Xiaoli Dai ,  Huimin Ding ,  Gino Cuglietta

IPC分类号： G02B6/028 ,  G02F1/295

CPC分类号： G02B6/13 ,  G02B6/02114 ,  G02B6/02138

摘要： A method of inducing birefringence in an optical waveguide is disclosed wherein the waveguide cladding is irradiated with energy of a sufficient intensity so as to induce a stress in the optical waveguide so as to cause a multitude of spaced stress induced regions within the cladding of the optical waveguide such that there are 10 to 5000 spaced regions per mm and wherein the stress induced regions are proximate the core greater than 2 microns distance from the core-cladding interface. This waveguide has numerous uses, for example a fiber sensor.

摘要翻译： 公开了一种在光波导中引发双折射的方法，其中用足够强度的能量照射波导包层，以便在光波导中引起应力，从而在光学器件的包层内产生多个间隔开的应力感应区域 波导，使得每mm具有10至5000个间隔的区域，并且其中应力诱导区域距核心 - 包层界面的距离大于2微米的核心附近。 该波导具有许多用途，例如光纤传感器。