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1. 发明授权

US06788835B2 Multiplexable fiber-optic strain sensor system with temperature compensation capability 失效
公开(公告)号：US06788835B2
公开(公告)日：2004-09-07
申请号：US10422093
申请日：2003-04-24
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
IPC分类号： G02B600
CPC分类号： G01L1/246 , G01B11/16 , G01D5/35316 , G01D5/35354 , G01D5/35387 , G02B6/02057 , G02B6/022 , G02B6/2932 , G02B6/29395 , G02B6/29398
摘要： A fiber optic sensor comprises two independent fibers having Bragg gratings which are coupled to commutating broadband optical sources through splitters and wavelength discriminators. The ratio of detected optical energy in each of two detectors examining the wave intensity returned to a wavelength discriminator coupled with the characteristic of the wavelength discriminator determines the wavelength returned by the grating. In another embodiment, tunable filters are utilized to detect minimum returned wave energy to extract a sensor wavelength Reference to the original grating wavelength indicates the application of either temperature or strain to the grating. In another embodiment, a plurality of Bragg grating sensor elements is coupled to sources and controllers wherein a dimensional change in a fiber having a Bragg grating is detected using a measurement system comprising broad-band sources, optical power splitters, a high-sensitivity wavelength discriminator, optical detectors, and a controller.

2. 发明授权

US06895132B2 Multiplexable fiber-optic strain sensor system with temperature compensation capability 失效
标题翻译：具有温度补偿功能的多路复用光纤应变传感器系统
公开(公告)号：US06895132B2
公开(公告)日：2005-05-17
申请号：US10422145
申请日：2003-04-24
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
IPC分类号： G01B11/16 , G01D5/353 , G01L1/24 , G02B6/34 , G02B6/00
CPC分类号： G01L1/246 , G01B11/16 , G01D5/35316 , G01D5/35354 , G01D5/35387 , G02B6/02057 , G02B6/022 , G02B6/2932 , G02B6/29395 , G02B6/29398
摘要： A fiber optic sensor comprises two independent fibers having Bragg gratings which are coupled to commutating broadband optical sources through splitters and wavelength discriminators. The ratio of detected optical energy in each of two detectors examining the wave intensity returned to a wavelength discriminator coupled with the characteristic of the wavelength discriminator determines the wavelength returned by the grating. In another embodiment, tunable filters are utilized to detect minimum returned wave energy to extract a sensor wavelength Reference to the original grating wavelength indicates the application of either temperature or strain to the grating. In another embodiment, a plurality of Bragg grating sensor elements is coupled to sources and controllers wherein a dimensional change in a fiber having a Bragg grating is detected using a measurement system comprising broad-band sources, optical power splitters, a high-sensitivity wavelength discriminator, optical detectors, and a controller.
摘要翻译：光纤传感器包括具有布拉格光栅的两个独立光纤，其通过分离器和波长鉴别器耦合到换向宽带光源。两个检测器中检测到的光能的比率，检测返回到波长鉴别器的波强与波长鉴别器的特性相结合，确定了光栅返回的波长。在另一个实施例中，可调谐滤波器用于检测最小返回波能量以提取传感器波长。对于原始光栅波长的参考指示对光栅施加温度或应变。在另一个实施例中，多个布拉格光栅传感器元件耦合到源和控制器，其中使用包括宽带源，光功率分配器，高灵敏度波长鉴别器的测量系统检测具有布拉格光栅的光纤中的尺寸变化，光学检测器和控制器。

3. 发明授权

US06597822B1 Multiplexable fiber-optic strain sensor system with temperature compensation capability 有权
标题翻译：具有温度补偿功能的多路复用光纤应变传感器系统
公开(公告)号：US06597822B1
公开(公告)日：2003-07-22
申请号：US09286092
申请日：1999-04-02
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw , Keiichiro Toyama
IPC分类号： G02B600
CPC分类号： G01L1/246 , G01B11/16 , G01D5/35316 , G01D5/35354 , G01D5/35387 , G02B6/02057 , G02B6/022 , G02B6/2932 , G02B6/29395 , G02B6/29398
摘要： A fiber optic sensor comprises two independent fibers having Bragg gratings which are coupled to commutating broadband optical sources through splitters and wavelength discriminators. The ratio of detected optical energy in each of two detectors examining the wave intensity returned to a wavelength discriminator coupled with the characteristic of the wavelength discriminator determines the wavelength returned by the grating. In another embodiment, tunable filters are utilized to detect minimum returned wave energy to extract a sensor wavelength. Reference to the original grating wavelength indicates the application of either temperature or strain to the grating. In another embodiment, a plurality of Bragg grating sensor elements is coupled to sources and controllers wherein a dimensional change in a fiber having a Bragg grating is detected using a measurement system comprising broad-band sources, optical power splitters, a high-sensitivity wavelength discriminator, optical detectors, and a controller.
摘要翻译：光纤传感器包括具有布拉格光栅的两个独立光纤，其通过分离器和波长鉴别器耦合到换向宽带光源。两个检测器中检测到的光能的比率，检测返回到波长鉴别器的波强与波长鉴别器的特性相结合，确定了光栅返回的波长。在另一个实施例中，可调谐滤波器用于检测最小返回波能量以提取传感器波长。参考原始光栅波长表示对光栅施加温度或应变。在另一个实施例中，多个布拉格光栅传感器元件耦合到源和控制器，其中使用包括宽带源，光功率分配器，高灵敏度波长鉴别器的测量系统检测具有布拉格光栅的光纤中的尺寸变化，光学检测器和控制器。

4. 发明授权

US6038359A Mode-routed fiber-optic add-drop filter 失效
标题翻译：模式路由光纤插件滤波器
公开(公告)号：US6038359A
公开(公告)日：2000-03-14
申请号：US108128
申请日：1998-06-04
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw
IPC分类号： G02B6/14 , G02B6/34 , G02B6/26
CPC分类号： G02B6/2932 , G02B6/29355 , G02B6/29383 , G02B6/14 , G02B6/29334
摘要： New elements mode-converting two-mode grating and mode-filtering two-mode coupler are disclosed and used as elements in a system for communications, add-drop filtering, and strain sensing. Methods of fabrication for these new two-mode gratings and mode-filtering two-mode couplers are also disclosed.
摘要翻译：新元件模式转换双模光栅和模式滤波双模耦合器被公开并用作用于通信，分插滤波和应变感测的系统中的元件。还公开了这些新的双模光栅和模式滤波双模耦合器的制造方法。

5. 发明授权

US5940556A Fiber-optic mode-routed add-drop filter 失效
标题翻译：光纤模式路由分插滤波器
公开(公告)号：US5940556A
公开(公告)日：1999-08-17
申请号：US813165
申请日：1997-03-07
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw
IPC分类号： G02B6/14 , G02B6/34 , G02B6/26
CPC分类号： G02B6/2932 , G02B6/29355 , G02B6/29383 , G02B6/14 , G02B6/29334
摘要： New elements mode-converting two-mode grating and mode-filtering two-mode coupler are disclosed and used as elements in a system for communications, add-drop filtering, and strain sensing. Methods of fabrication for these new two-mode gratings and mode-filtering two-mode couplers are also disclosed.
摘要翻译：新元件模式转换双模光栅和模式滤波双模耦合器被公开并用作用于通信，分插滤波和应变感测的系统中的元件。还公开了这些新的双模光栅和模式滤波双模耦合器的制造方法。

6. 发明授权

US6011881A Fiber-optic tunable filter 失效
标题翻译：光纤可调谐滤波器
公开(公告)号：US6011881A
公开(公告)日：2000-01-04
申请号：US999101
申请日：1997-12-29
申请人： Behzad Moslehi , Richard James Black , Herbert John Shaw
发明人： Behzad Moslehi , Richard James Black , Herbert John Shaw
IPC分类号： G02B6/34 , G02F1/01 , G02F1/065 , G02F1/313 , G02F1/295
CPC分类号： G02B6/29322 , G02F1/011 , G02F1/0118 , G02F1/3131 , G02B6/02195 , G02F1/065 , G02F1/3136 , G02F2201/307
摘要： A tunable filter comprises either an internal or an external grating proximal to a variable index of refraction material. This variable index of refraction material may vary upon the application of an external electrical potential or the application of a change in temperature of the polymer. Additionally, the grating may comprise a periodic modulation of the index of refraction, this periodic modulation comprising an isoplanar modulation of the index of refraction at an angle to the central axis of the waveguide, thereby causing conversion of fundamental mode waves to second mode waves, and by reciprocity, conversion of second mode waves to fundamental mode waves.
摘要翻译：可调谐滤波器包括靠近可变折射率材料的内部或外部光栅。该可变折射率材料可以在施加外部电位或施加聚合物温度变化时变化。此外，光栅可以包括折射率的周期性调制，该周期性调制包括与波导的中心轴成一角度的折射率的等平面调制，从而导致基模波转换为第二模式波，并通过互惠将第二模式波转换为基波模式波。

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