公开(公告)号：US07606452B2

公开(公告)日：2009-10-20

申请号：US12190861

申请日：2008-08-13

申请人： Francois Bilodeau ,  Bernard Malo ,  Stephen Mihailov

发明人： Francois Bilodeau ,  Bernard Malo ,  Stephen Mihailov

IPC分类号： G02B6/26 ,  G02B6/255

CPC分类号： G02B6/14 ,  G02B6/2551 ,  G02B6/2552

摘要： A device for providing an expanded mode field from a single mode optical waveguide is formed by fusing a length of single mode optical fiber with a length of fiber rod absent a cladding and adiabatically tapering the fused region. The length of single mode fiber has a core having a refractive index nco and a cladding having a refractive index ncl, wherein ncl

摘要翻译： 通过将单模光纤的长度与没有包层的纤维棒的长度融合，并绝热地使熔融区域逐渐变细来形成用于从单模光波导提供扩展模场的装置。 单模光纤的长度具有折射率nco的核和具有折射率ncl的包层，其中ncl

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：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：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：US20090060417A1

公开(公告)日：2009-03-05

申请号：US12190861

申请日：2008-08-13

申请人： Francois Bilodeau ,  Bernard Malo ,  Stephen Mihailov

发明人： Francois Bilodeau ,  Bernard Malo ,  Stephen Mihailov

IPC分类号： G02B6/26 ,  G02B6/255

CPC分类号： G02B6/14 ,  G02B6/2551 ,  G02B6/2552

摘要： A device for providing an expanded mode field from a single mode optical waveguide is formed by fusing a length of single mode optical fiber with a length of fiber rod absent a cladding and adiabatically tapering the fused region. The length of single mode fiber has a core having a refractive index nco and a cladding having a refractive index ncl, wherein ncl

摘要翻译： 通过将单模光纤的长度与没有包层的纤维棒的长度融合，并绝热地使熔融区域逐渐变细来形成用于从单模光波导提供扩展模场的装置。 单模光纤的长度具有折射率nco的核和具有折射率ncl的包层，其中ncl

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。