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1. 发明授权

EP2507605B1 BEARING MONITORING USING A FIBER BRAGG GRATING 有权
标题翻译：使用光纤布拉格光栅进行监测
公开(公告)号：EP2507605B1
公开(公告)日：2018-03-07
申请号：EP10782206.6
申请日：2010-11-26
申请人： Aktiebolaget SKF
发明人： REEDMAN, Adam, Victor, Creyke , YANG, Hong, Yu
IPC分类号： G01L5/00 , G01M13/04 , F16C33/58 , F16C41/00
CPC分类号： G01L5/0009 , F16C19/26 , F16C19/38 , F16C19/522 , F16C23/086 , F16C33/30 , F16C33/586 , G01D5/35303 , G01D5/35367 , G01L1/246 , G01M13/04 , G02B6/0208
摘要： A bearing comprises a Bragg grated optical fiber to measure one or more parameters of the bearing such as load, temperature, acceleration/vibration and identification. To be able to fit as many Bragg gratings as possible, the utilization of the corresponding frequency plane output is optimized by having low bandwidth next to large bandwidth sensors in the frequency place. The corresponding physical sensors such as load sensors on a bearing will not be adjacent. Sensors in the loaded zone are giving a high bandwidth output and sensors in the un-loaded zone are giving a low bandwidth output, thus even though these are not physically adjacent, the corresponding frequency areas are adjacent by appropriate grating.

2. 发明授权

EP2259037B1 Fiber bragg grating devices utilizing slow light 有权
标题翻译：缓慢利用光光纤布拉格光栅设备
公开(公告)号：EP2259037B1
公开(公告)日：2016-10-12
申请号：EP10251039.3
申请日：2010-06-04
申请人： The Board of Trustees of the Leland Stanford Junior University
发明人： Digonnet, Michel J.F. , Fan, Shanhui , Wen, He , Terrel, Matthew
IPC分类号： G01J9/02 , G01K11/32 , G01L1/24 , G02B6/02
CPC分类号： G01J9/0246 , G01D5/35316 , G01K11/3206 , G01L1/246 , G02B6/02076 , G02B6/0208

3. 发明公开

EP2507605A1 BEARING MONITORING USING A FIBER BRAGG GRATING 有权
标题翻译：使用光纤布拉格光栅进行监测
公开(公告)号：EP2507605A1
公开(公告)日：2012-10-10
申请号：EP10782206.6
申请日：2010-11-26
申请人： Aktiebolaget SKF
发明人： REEDMAN, Adam, Victor, Creyke , YANG, Hong, Yu
IPC分类号： G01L5/00 , G01M13/04 , F16C33/58 , F16C41/00
CPC分类号： G01L5/0009 , F16C19/26 , F16C19/38 , F16C19/522 , F16C23/086 , F16C33/30 , F16C33/586 , G01D5/35303 , G01D5/35367 , G01L1/246 , G01M13/04 , G02B6/0208
摘要： A bearing comprises a Bragg grated optical fiber to measure one or more parameters of the bearing such as load, temperature, acceleration/vibration and identification. To be able to fit as many Bragg gratings as possible, the utilization of the corresponding frequency plane output is optimized by having low bandwidth next to large bandwidth sensors in the frequency place. The corresponding physical sensors such as load sensors on a bearing will not be adjacent. Sensors in the loaded zone are giving a high bandwidth output and sensors in the un-loaded zone are giving a low bandwidth output, thus even though these are not physically adjacent, the corresponding frequency areas are adjacent by appropriate grating.
摘要翻译：滚动元件轴承包括凹槽，该凹槽优选地在凹槽的中部下方的整个轴承周围具有凹槽。凹槽既可以容纳布拉格光栅，也可以通过减弱轴承来增加光纤的感知灵敏度，从而比凹槽不存在时产生更大的特定负载/振动变形。

4. 发明公开

EP1442325A2 APPARATUS FOR FILTERING OPTICAL RADIATION 审中-公开
标题翻译：用于过滤光学辐射的装置
公开(公告)号：EP1442325A2
公开(公告)日：2004-08-04
申请号：EP02772628.0
申请日：2002-11-06
申请人： Southampton Photonics Limited
发明人： DURKIN, Michael Kevan , ZERVAS, Mikhail Nickolaos
IPC分类号： G02B6/293
CPC分类号： G02B6/02085 , G02B6/0208
摘要： Apparatus for filtering optical radiation at an operating wavelength (19), which apparatus comprises a grating (1) written into a waveguide (2), and which grating (1) has a first end (3), a second end (91), a first bandwidth (24), a maximum reflectivity (29), a first group delay variation (17) defined with respect to the first end (3), and a second group delay variation (18) defined with respect to the second end (91), wherein the first and second group delay variations (17), (18) are with respect to the first bandwidth (24), the maximum reflectivity (29) is greater than 50 %, the first group delay variation (17) is between 0.1ps and 100ps, and the second group delay variation (18) is between 0.1ps and 100ps.
摘要翻译：该设备包括写入波导（2）中的光栅（1），该光栅（1）具有第一端部（3），第二端部（91）和第二端部第一带宽（24），最大反射率（29），相对于第一端（3）定义的第一群延迟变化（17）以及相对于第二端（3）定义的第二群延迟变化（18）其中第一和第二组延迟变化（17），（18）相对于第一带宽（24），最大反射率（29）大于50％，第一组延迟变化（17）是在0.1ps和100ps之间，第二组延迟变化（18）在0.1ps和100ps之间。

5. 发明公开

EP1333299A3 Optical fiber and slanted optical fiber grating 有权
标题翻译：光纤和倾斜光纤光栅
公开(公告)号：EP1333299A3
公开(公告)日：2004-07-28
申请号：EP03250077.9
申请日：2003-01-07
申请人： FUJIKURA LTD.
发明人： Sudo, Masaaki , Niwa, Atuhiko , Okude, Satoshi
IPC分类号： G02B6/16 , G02B6/22
CPC分类号： C03C3/06 , C03C13/00 , G02B6/0208 , G02B6/02119 , G02B6/0365 , G02B6/03694
摘要： Photosensitivity of an inner core (1a) which is disposed in a central portion of a core (1) is low. Photosensitivity of an outer core (1b) which is disposed close to a cladding (2) is high. In the cladding (2), photosensitivity of the inner cladding (2a) which is close to the core (1) is high and photosensitivity of an outer cladding (2b) which is outside of the inner cladding (2a) is low. A plurality of slant optical fiber gratings having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.

6. 发明公开

EP1333299A2 Optical fiber and slanted optical fiber grating 有权
标题翻译： Optische Faser und Gigigtes Fasergitter
公开(公告)号：EP1333299A2
公开(公告)日：2003-08-06
申请号：EP03250077.9
申请日：2003-01-07
申请人： FUJIKURA LTD.
发明人： Sudo, Masaaki , Niwa, Atuhiko , Okude, Saatoshi
IPC分类号： G02B6/16 , G02B6/22
CPC分类号： C03C3/06 , C03C13/00 , G02B6/0208 , G02B6/02119 , G02B6/0365 , G02B6/03694
摘要： Photosensitivity of an inner core (1a) which is disposed in a central portion of a core (1) is low. Photosensitivity of an outer core (1b) which is disposed close to a cladding (2) is high. In the cladding (2), photosensitivity of the inner cladding (2a) which is close to the core (1) is high and photosensitivity of an outer cladding (2b) which is outside of the inner cladding (2a) is low. A plurality of slant optical fiber gratings having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.
摘要翻译：配置在芯（1）的中心部的内芯（1a）的感光度低。靠近包层（2）设置的外芯（1b）的感光度高。在包层（2）中，靠近芯（1）的内包层（2a）的光敏性高，并且位于内包层（2a）外侧的外包层（2b）的光敏性低。通过使用具有这种光敏性的光纤以形成增益均衡滤光器的具有不同光学特性的多个倾斜光纤光栅。通过这样做，可以提供一种具有倾斜光纤光栅的滤光器，其能够在窄带宽内保持滤光特性并扩大损耗面积。

7. 发明公开

EP1123520A1 WAVELENGTH TUNING OF PHOTO-INDUCED GRATINGS 审中-公开
标题翻译：波长VOTE光诱导LATTICE
公开(公告)号：EP1123520A1
公开(公告)日：2001-08-16
申请号：EP99951828.5
申请日：1999-10-07
申请人： CORNING INCORPORATED
发明人： BHATIA, Vikram , MODAVIS, Robert, A.
IPC分类号： G02B5/18 , G02B6/34
CPC分类号： G03F7/70191 , G02B6/0208 , G02B6/02133 , G02B6/02138 , G02B6/02142 , G03F7/7035 , G03F7/70408 , Y10S359/90
摘要： Optical gratings having a range of possible Bragg wavelengths can be produced using a single phase mask by exposing the mask to a non-collimated spatially filtered beam of light. A spatial filter (30) removes high spatial frequency components from the beam, and a focusing system (36) directs the filtered beam to a phase mask (40). A rate at which the beam is focused and a spacing between the phase mask and a photo-sensitive waveguide (12) are varied to produce gratings in the waveguide having a range of possible periods.

8. 发明公开

EP0572169A1 Article comprising an otpical waveguide with in-line refractive index grating 失效
$Article comprising an otpical waveguide with in-line refractive index grating$
标题翻译： Gegenstand mit einem optischen Wellenleiter mit Brechungsindexgitter。
公开(公告)号：EP0572169A1
公开(公告)日：1993-12-01
申请号：EP93303906.7
申请日：1993-05-20
申请人： AT&T Corp.
发明人： Mizrahi, Victor
IPC分类号： G02B6/16 , G02B6/34 , H01S3/06
CPC分类号： G02B6/4215 , G02B6/0208 , G02B6/02085 , G02B6/02114 , G02B6/29317 , G02B6/29332 , H01S3/0675 , H01S2301/04
摘要： Broadband in-line gratings (19, 30) in optical waveguides (17) are disclosed. The gratings have a bandwidth of at least 2 nm (preferably at least 4 nm) and a peak reflectivity of at least 70% (preferably at least 90%). Exemplarily, such gratings can be formed in H₂-treated Si-based fibers that support a normalized index change of at least 10⁻³. Gratings according to the invention can be used, for instance, to form pump radiation reflectors in an optical fiber communication system (10) with Er-doped fiber amplifiers, or to flatten the amplifier gain curve. The gratings can be of the blazed or non-blazed type.
摘要翻译：公开了光波导（17）中的宽带直线光栅（19,30）。光栅具有至少2nm（优选至少4nm）的带宽和至少70％（优选至少90％）的峰值反射率。示例性地，这种光栅可以形成在支持至少10 -3的归一化指数变化的经H2处理的Si基纤维中。根据本发明的光栅可用于例如在具有掺铒光纤放大器的光纤通信系统（10）中形成泵浦辐射反射器，或者使放大器增益曲线变平坦。光栅可以是闪耀型或非闪光型。

9. 发明授权

EP2050411B1 LIGHT IRRADIATION APPARATUS 有权
标题翻译：阳光照射装置
公开(公告)号：EP2050411B1
公开(公告)日：2011-03-09
申请号：EP07790830.9
申请日：2007-07-17
申请人： Hamamatsu Photonics K.K.
发明人： YAMASHITA, Daisuke , YAMASHITA, Yutaka , YAMAUCHI, Toyohiko , OKADA, Hiroyuki
IPC分类号： A61B18/20 , A61B18/24 , G01H9/00 , A61N5/067 , A61N5/06 , A61B18/26 , G01L1/24 , G01B11/16 , A61B17/00 , G02B6/02 , A61B17/22
CPC分类号： A61B18/24 , A61B2017/00057 , G02B6/0208 , G02B6/4246
摘要： A light irradiation apparatus (1) is provided with a laser light source (10) for generating laser light; a light source (20) for detection light, for generating detection light having a prescribed wavelength; an optical fiber (30), which permits the laser light to be inputted from one end surface (30a) and to be outputted from the other end surface (30b) to irradiate an object (3), permits the detection light to be inputted from the end surface (30a), and has an FBG (32) in the vicinity of the end surface (30b) for reflecting light having a prescribed wavelength; a light detector (50) for detecting intensity of detection light, which is reflected by the FBG (32) and outputted from the end surface (30a); and a signal processing section (60) for detecting irradiation status of the object (3) with the laser light, based on the detected intensity of the detection light. The laser light generated from the laser light source (10) has a wavelength other than that reflected by the FBG (32).

10. 发明公开

EP1747486A2 METHOD OF CHARACTERIZING FIBER BRAGG GRATINGS USING ITERATIVE PROCESSING 审中-公开
标题翻译：为表征的光纤布拉格方法电网使用迭代处理
公开(公告)号：EP1747486A2
公开(公告)日：2007-01-31
申请号：EP05762819.0
申请日：2005-05-16
申请人： THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
发明人： OZCAN, Aydogan , DIGONNET, Michael, J.F. , KINO, Gordon, S.
IPC分类号： G02B6/02 , G01M11/00
CPC分类号： G02B6/0208 , G01M11/3145 , G01M11/3172 , G02B2006/02166
摘要： A method determines a complex reflection impulse response of a fiber Bragg grating. The method includes providing a measured amplitude of a complex reflection spectrum of the fiber Bragg grating. The method further includes providing an estimated phase term of the complex reflection spectrum. The method further includes multiplying the measured amplitude and the estimated phase term to generate an estimated complex reflection spectrum. The method further includes calculating an inverse Fourier transform of the estimated complex reflection spectrum, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex reflection impulse response by applying at least one constraint to the inverse Fourier transform of the estimated complex reflection spectrum.

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