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1.发明公开Bragg grating and method of producing a bragg grating using an ultrafast laser 有权Methode zur Herstellung eines Bragg-Gitters unter Verwendung eines ultraschnellen Lasers
公开(公告)号：EP1460459A1
公开(公告)日：2004-09-22
申请号：EP03405845.3
申请日：2003-11-26
发明人： Mihailov, Stephen J. , Smelser, Christopher W. , Lu, Ping , Walker, Robert B. , Grobnic, Dan , Ding, Huimin , Henderson, George , Dai, Xiaoli
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 (20). Electromagnetic radiation provided from the laser propagates to a diffractive element (22) positioned in close proximity to the target material (23). 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： 公开了一种用于使用干涉图案改变材料的折射率的新颖方法和装置。 该方法和装置包括超短脉冲激光源（20）。 从激光器提供的电磁辐射传播到靠近目标材料（23）定位的衍射元件（22）。 衍射电磁辐射形成干涉图案，其峰值足够强以引起折射率的变化。
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公开(公告)号：EP1591809A1
公开(公告)日：2005-11-02
申请号：EP05405293.1
申请日：2005-04-14
发明人： Mihailov, Stephen J. , Grobnic, Dan , Smelser, Christopher , Walker, Robert , Lu, Ping , Ding, Huimin , Henderson, George , Dai, Xiaoli
CPC分类号： G02B6/02138 , G02B6/021 , G02B6/10 , G02B6/262
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.
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3.发明公开Bragg grating and method of producing a bragg using an ultrafast laser 有权Bragg-Gitter unddazugehörigeHerstellungsmethode，die einen ultraschnellen Laser verwendet
公开(公告)号：EP1462831A1
公开(公告)日：2004-09-29
申请号：EP04405172.0
申请日：2004-03-22
发明人： Mihailov, Stephen J. , Grobnic, Dan , Smelser, Christopher , Walker, Robert , Lu, Ping , Ding, Huimin , Henderson, George , Dai, Xiaoli
CPC分类号： G02B6/021 , G02B5/1857 , G02B6/02138
摘要： A novel Bragg grating filter (46) in optical waveguiding fiber (43) with suppressed cladding mode coupling and method of producing same is disclosed. The novel grating structure (46) is induced in both the core (45) and the cladding (44) 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 (40) provided from the laser propagates to a diffractive element (42) positioned a specific distance (47) 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（43）中的新型布拉格光栅滤波器（46）及其制造方法。 新颖的光栅结构（46）在光纤的芯（45）和包层（44）两者中被感应，而不管芯或包层对光化辐射的光敏性如何。 光纤的这种芯和包层不需要被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（40）传播到与靶材料定位特定距离（47）的衍射元件（42），使得衍射电磁辐射形成2光束干涉图案，其峰值足够强 导致折射率的变化。
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公开(公告)号：EP1591809B1
公开(公告)日：2011-02-09
申请号：EP05405293.1
申请日：2005-04-14
发明人： Mihailov, Stephen J. , Grobnic, Dan , Smelser, Christopher , Walker, Robert , Lu, Ping , Ding, Huimin , Henderson, George , Dai, Xiaoli
CPC分类号： G02B6/02138 , G02B6/021 , G02B6/10 , G02B6/262
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5.发明授权
公开(公告)号：EP1462831B1
公开(公告)日：2008-05-14
申请号：EP04405172.0
申请日：2004-03-22
发明人： Mihailov, Stephen J. , Grobnic, Dan , Smelser, Christopher , Walker, Robert , Lu, Ping , Ding, Huimin , Henderson, George , Dai, Xiaoli
CPC分类号： G02B6/021 , G02B5/1857 , G02B6/02138
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