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31. 发明授权

US06785004B2 Method and apparatus for interrogating fiber optic sensors 有权
标题翻译：用于询问光纤传感器的方法和装置
公开(公告)号：US06785004B2
公开(公告)日：2004-08-31
申请号：US09726059
申请日：2000-11-29
申请人： Alan D. Kersey , Allen R. Davis , Mark R. Fernald , Charles R. Winston , Timothy J. Bailey
发明人： Alan D. Kersey , Allen R. Davis , Mark R. Fernald , Charles R. Winston , Timothy J. Bailey
IPC分类号： G01B902
CPC分类号： G01D5/35383 , E21B47/102
摘要： An apparatus and method for interrogating fiber optic sensors non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes a two-beam interferometer which comprises an optical circuit for generating a series of discrete light pulses that are directed at sensors positioned between pairs of low reflectivity fiber Bragg gratings. The successive light pulses are split into first light pulses and second light pulses, and the second light pulses are delayed a known time period relative to the first pulses. The first and second light pulses are combined onto a single optical fiber and directed through the low reflectivity gratings and the sensors positioned between the gratings. Reflected pulses from the series of pulses impinge on a photo receiver and interrogator, wherein the phase shift between the reflected first light pulses from a particular grating and the reflected second light pulses from the preceding grating, for each sensor are determined. Phase shifts from successive pulses for each sensor are compared, and a change in a measured parameter of the fluid is determined.
摘要翻译：提供了一种用于询问光纤传感器非侵入式地感测管道内的流体流动的装置和方法。该装置包括双光束干涉仪，其包括用于产生一系列离散光脉冲的光学电路，其被定向在位于低反射率光纤布拉格光栅对之间的传感器处。连续的光脉冲被分成第一光脉冲和第二光脉冲，并且第二光脉冲相对于第一脉冲被延迟已知的时间周期。第一和第二光脉冲被组合到单个光纤上并被引导通过位于光栅之间的低反射率光栅和传感器。来自一系列脉冲的反射脉冲撞击光接收器和询问器，其中确定来自特定光栅的反射的第一光脉冲与来自前一光栅的反射的第二光脉冲之间对于每个传感器的相移。比较每个传感器的连续脉冲的相移，并确定流体的测量参数的变化。

32. 发明授权

US06278811B1 Fiber optic bragg grating pressure sensor 有权
标题翻译：光纤布拉格光栅压力传感器
公开(公告)号：US06278811B1
公开(公告)日：2001-08-21
申请号：US09399504
申请日：1999-09-20
申请人： Arthur D. Hay , Alan D. Kersey , Robert J. Maron , Phillip Edmund Pruett , Mark R. Fernald , Guy A. Daigle , F. Kevin Didden , Allen R. Davis , Michael A. Davis , Timothy J. Bailey
发明人： Arthur D. Hay , Alan D. Kersey , Robert J. Maron , Phillip Edmund Pruett , Mark R. Fernald , Guy A. Daigle , F. Kevin Didden , Allen R. Davis , Michael A. Davis , Timothy J. Bailey
IPC分类号： G02B600
CPC分类号： G01L11/025
摘要： A fiber optic Bragg grating pressure sensor particularly suited for measuring ambient pressure of a fluid includes a pressuring detecting device 12 such as a glass element whose elastic deformation is proportional to applied pressure. An optical fiber 28 with an integral first grating 33 is wrapped at least once around the device and has at least a portion of its length fused to the device 12 such that elastic deformation of the device 12 generates a corresponding axial strain in the fiber 28 and/or the grating 33 and thus a corresponding change of the fiber length and/or characteristic reflectance wavelength of the grating 33. A second grating 35 may be formed near the pressure detecting device 12 so as to sense ambient temperature but not be affected by deformation of the device 12 for temperature compensation. Also, the fiber 28 may have more than one grating or be doped at least between a pair of gratings 160,162, to form a fiber laser or a DFB fiber laser which lasing wavelength changes with changing pressure.
摘要翻译：特别适用于测量流体环境压力的光纤布拉格光栅压力传感器包括加压检测装置12，例如玻璃元件，其弹性变形与施加的压力成比例。具有集成的第一光栅33的光纤28至少缠绕在设备周围，并且其长度的至少一部分与设备12融合，使得设备12的弹性变形在纤维28中产生相应的轴向应变，并且 /或光栅33，从而光栅33的光纤长度和/或特征反射波长的相应变化。第二光栅35可以形成在压力检测装置12附近，以便感测环境温度但不受变形影响的温度补偿装置12。此外，光纤28可以具有多于一个光栅或者至少在一对光栅160,162之间被掺杂，以形成激光波长随着变化的压力而变化的光纤激光器或DFB光纤激光器。

33. 发明授权

US06792009B2 Tunable grating-based channel filter parking device 有权
标题翻译：可调光栅通道滤波器停车装置
公开(公告)号：US06792009B2
公开(公告)日：2004-09-14
申请号：US10226944
申请日：2002-08-22
申请人： Martin A. Putnam , Alan D. Kersey , Timothy J. Bailey
发明人： Martin A. Putnam , Alan D. Kersey , Timothy J. Bailey
IPC分类号： H01S330
CPC分类号： G02B6/02204 , G01D5/35316 , G02B6/02 , G02B6/02042 , G02B6/02085 , G02B6/02176 , G02B6/0218 , G02B6/022 , G02B6/266 , G02B6/2932 , G02B6/29322 , G02B6/29383 , G02B6/29395 , G02B6/29398 , G02B6/4214 , G02F1/011 , G02F1/0115 , G02F1/0128 , G02F2201/307
摘要： An optical filter, including a Bragg grating, is compression tuned such that when under one compressional load (or no load) the grating has a first profile and under a second compressional load the grating has a second profile. One application is to allow the grating filter function to be parked optically between channels of a WDM or DWDM optical system.
摘要翻译：包括布拉格光栅的滤光器被压缩调谐，使得当在一个压缩负载（或无负载）下时，光栅具有第一轮廓，并且在第二压缩载荷下，光栅具有第二轮廓。一个应用是允许光栅滤波器功能在WDM或DWDM光学系统的通道之间光学停放。

34. 发明授权

US06594410B2 Wide range tunable optical filter 有权
公开(公告)号：US06594410B2
公开(公告)日：2003-07-15
申请号：US09751589
申请日：2000-12-29
申请人： Alan D. Kersey , Michael A. Davis , Martin A. Putnam , Timothy J. Bailey
发明人： Alan D. Kersey , Michael A. Davis , Martin A. Putnam , Timothy J. Bailey
IPC分类号： G02B626
CPC分类号： G02B6/4215 , G02B6/2932 , G02B6/29322 , G02B6/29395 , H04J14/0209 , H04J14/021 , H04J14/0213 , H04J14/0216 , H04J14/0219
摘要： A tunable optical filter filters is provided that has a pair of tunable Bragg grating units optically coupled to respective ports of a 4-port circulator for filtering a selected wavelength band or channel of light from a DWDM input light. Each grating unit includes an array of Bragg gratings written or embedded within a respective tunable optical element to provide a tunable optical filter that functions over a wide spectral range greater than the tunable range of each grating element. The reflection wavelengths of the array of gratings of each respective grating element is spaced at a predetermined spacing, such that when a pair of complementary gratings of the grating elements are aligned, the other complementary gratings are misaligned. Both of the optical elements may be tuned to selectively align each complementary grating over each corresponding spectral range.

35. 发明授权

US08073293B2 Sensing device having a large diameter D-shaped optical waveguide 有权
标题翻译：具有大直径D形光波导的感测装置
公开(公告)号：US08073293B2
公开(公告)日：2011-12-06
申请号：US10756183
申请日：2004-01-13
申请人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
发明人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
IPC分类号： G02B6/00 , G02B6/02
CPC分类号： G01B11/18 , G01D5/35377 , G01D5/3538 , G01K11/32 , G01L1/242 , G02B6/02052 , G02B6/02057 , G02B6/274 , G02B6/2817 , G02B6/2821 , G02B6/2826 , G02B6/29334 , G02B6/4214 , H01S3/06708 , H01S3/0675 , H01S3/094003 , H01S3/094007 , H01S3/094019
摘要： An optical sensor formed from an optical waveguide having at least one core surrounded by a cladding and a large diameter generally D-shaped portion is disclosed. Axial or compressive strain across the D-shaped cross section may be determined by measuring the change in polarization or birefringence of the light output from the sensor. A layer responsive to a parameter may be disposed on a flat portion of the D-shaped portion of the sensor. The refractive index of the layer changes and/or the layer applies a strain on the sensor in response to the parameter. Changes in the refractive index of the layer alters the light output from the sensor, which is measured over time and correlated to the parameter.
摘要翻译：公开了一种由光波导形成的光学传感器，该光波导具有由包层围绕的至少一个核心和大直径大致D形的部分。可以通过测量从传感器输出的光的偏振或双折射的变化来确定穿过D形横截面的轴向或压缩应变。响应于参数的层可以设置在传感器的D形部分的平坦部分上。层的折射率改变和/或层响应于参数在传感器上施加应变。层的折射率变化改变了传感器的光输出，其随时间测量并与参数相关。

36. 发明授权

US06996316B2 Large diameter D-shaped optical waveguide and coupler 有权
标题翻译：大直径D型光波导和耦合器
公开(公告)号：US06996316B2
公开(公告)日：2006-02-07
申请号：US10098891
申请日：2002-03-18
申请人： Timothy J. Bailey , Robert N. Brucato , Alan D. Kersey , Martin A. Putnam , Paul Sanders , James Sullivan
发明人： Timothy J. Bailey , Robert N. Brucato , Alan D. Kersey , Martin A. Putnam , Paul Sanders , James Sullivan
IPC分类号： G02B6/02 , G02B6/34 , G02B6/22 , H01S3/067
CPC分类号： G01L1/242 , G02B6/02057 , G02B6/274 , G02B6/2817 , G02B6/2821 , G02B6/2826 , G02B6/29334 , G02B6/4214 , H01S3/06708 , H01S3/0675 , H01S3/094003 , H01S3/094007 , H01S3/094019
摘要： A large diameter D-shaped optical waveguide device 9, includes an optional circular waveguide portion 11 and a D-shaped waveguide portion 10 having at least one core 12 surrounded by a cladding 14. A portion of the waveguide device 9 has a generally D-shaped cross-section and has transverse waveguide dimension d2 greater than about 0.3 mm. At least one Bragg grating 16 may be impressed in the waveguide 10 and/or more than one grating or pair of gratings may be used and more than one core may be used. The device 9 provides a sturdy waveguide platform for coupling light into and out of waveguides and for attachment and alignment to other waveguides, for single and multi-core applications. The core and/or cladding 12,14 may be doped with a rare-earth dopant and/or may be photosensitive. At least a portion of the core 12 may be doped between a pair of gratings 50,52 to form a fiber laser or the grating 16 or may be constructed as a tunable DFB fiber laser or an interactive fiber laser within the waveguide 10. The waveguide may resemble a short “block” or a longer “cane” type, depending on the application and dimensions used.
摘要翻译：大直径D形光波导器件9包括可选的圆形波导部分11和D形波导部分10，其具有被包层14包围的至少一个核心12。波导器件9的一部分具有大致D形的横截面并且横向波导尺寸d 2大于约0.3mm。可以在波导10中施加至少一个布拉格光栅16，和/或可以使用多于一个的光栅或一对光栅，并且可以使用多于一个的芯。器件9提供了一个坚固的波导平台，用于将光耦合到和流出波导，并用于连接和对准其他波导，用于单核和多核应用。芯和/或包层12,14可掺杂稀土掺杂剂和/或可以是光敏的。芯12的至少一部分可以掺杂在一对光栅50,52之间以形成光纤激光器或光栅16，或者可以被构造为波导10内的可调DFB光纤激光器或交互光纤激光器。波导可能类似于短的“块”或更长的“手杖”类型，具体取决于所使用的应用和尺寸。

37. 发明申请

US20120076452A1 SENSING DEVICE HAVING A LARGE DIAMETER D-SHAPED OPTICAL WAVEGUIDE 有权
标题翻译：具有大直径D型光学波导的传感装置
公开(公告)号：US20120076452A1
公开(公告)日：2012-03-29
申请号：US13311854
申请日：2011-12-06
申请人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
发明人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
IPC分类号： G02B6/00 , B24B1/00 , C03C15/00 , B23P11/00
CPC分类号： H01S3/0675 , G01B11/18 , G01D5/353 , G01D5/3538 , G01K11/32 , G01L1/242 , G02B6/02 , G02B6/02052 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/2817 , G02B6/2821 , G02B6/2826 , G02B6/29377 , G02B6/4214 , H01S3/06708 , H01S3/094003 , H01S3/094007 , H01S3/094019 , Y10T29/49815 , Y10T29/49817
摘要： An optical sensor formed from an optical waveguide having at least one core surrounded by a cladding and a large diameter generally D-shaped portion is disclosed. Axial or compressive strain across the D-shaped cross section may be determined by measuring the change in polarization or birefringence of the light output from the sensor. A layer responsive to a parameter may be disposed on a flat portion of the D-shaped portion of the sensor. The refractive index of the layer changes and/or the layer applies a strain on the sensor in response to the parameter. Changes in the refractive index of the layer alters the light output from the sensor, which is measured over time and correlated to the parameter.
摘要翻译：公开了一种由光波导形成的光学传感器，该光波导具有由包层围绕的至少一个核心和大直径大致D形的部分。可以通过测量从传感器输出的光的偏振或双折射的变化来确定穿过D形横截面的轴向或压缩应变。响应于参数的层可以设置在传感器的D形部分的平坦部分上。层的折射率改变和/或层响应于参数在传感器上施加应变。层的折射率变化改变了传感器的光输出，其随时间测量并与参数相关。

38. 发明授权

US07386204B1 Optical filter having a shaped filter function 有权
标题翻译：具有成型过滤功能的滤光器
公开(公告)号：US07386204B1
公开(公告)日：2008-06-10
申请号：US09648525
申请日：2000-08-26
申请人： Michael A. Davis , Alan D. Kersey , Martin A. Putnam , Timothy J. Bailey
发明人： Michael A. Davis , Alan D. Kersey , Martin A. Putnam , Timothy J. Bailey
IPC分类号： G02B6/34
CPC分类号： G02B6/4215 , G02B6/022 , G02B6/2932 , G02B6/29322 , G02B6/29395 , H04J14/02
摘要： An optical filter, including a pair of Bragg grating units optically coupled to respective ports of a circulator, is provided for filtering a selected wavelength band of light from a DWDM input light. Each grating unit includes a respective tunable optical element, which have a reflective element, such as a Bragg grating. Generally, one grating unit filters a selected wavelength band of light and reflects the selected wavelength band to the other grating unit, which reflects a portion of the reflected wavelength band to an output of the optical filter. This double reflection of the selected wavelength band provides an optical filter having an effective filter function that is equal to the product of the individual filter functions of the grating units. To create a desired effective filter function, the gratings may be written to have different filter functions or grating profiles. One or both of the grating units may also be tunable to selectively create, tailor, shape or change the effective filter function of the optical filter in response to a control signal by offsetting the reflection wavelengths of the gratings, having different grating profiles.
摘要翻译：提供了一种光学滤波器，其包括光耦合到环行器的相应端口的一对布拉格光栅单元，用于对来自DWDM输入光的所选择的波长带进行滤波。每个光栅单元包括各自的可调光学元件，其具有诸如布拉格光栅的反射元件。通常，一个光栅单元对所选择的波长带进行滤光并将所选择的波长带反射到将反射波长带的一部分反射到滤光器的输出的另一光栅单元。所选波长带的这种双重反射提供了具有等于光栅单元的各个滤波器功能的乘积的有效滤波器功能的滤光器。为了创建期望的有效滤波器功能，可以将光栅写入以具有不同的滤波器功能或光栅轮廓。光栅单元中的一个或两个也可以是可调谐的，以通过偏移具有不同光栅轮廓的光栅的反射波长来响应于控制信号选择性地创建，调整，形状或改变滤光器的有效滤光器功能。

39. 发明授权

US06763043B2 Tunable grating-based dispersion compensator 有权
标题翻译：可调光栅色散补偿器
公开(公告)号：US06763043B2
公开(公告)日：2004-07-13
申请号：US10224157
申请日：2002-08-20
申请人： Martin A. Putnam , Alan D. Kersey , Timothy J. Bailey
发明人： Martin A. Putnam , Alan D. Kersey , Timothy J. Bailey
IPC分类号： H01S330
CPC分类号： G02B6/02204 , G02B6/02 , G02B6/02042 , G02B6/02085 , G02B6/02176 , G02B6/0218 , G02B6/022 , G02B6/29317 , G02B6/2932 , G02B6/29322 , G02B6/29394 , G02B6/29395 , G02B6/29398 , G02F1/0115 , G02F1/0128 , G02F2201/307 , H01S3/0057
摘要： A tunable dispersion compensating device includes a grating element in the form of a bulk or large diameter waveguide, having an outer cladding disposed about an inner core. The grating element may be etched, grounded or machined to form a generally “dog bone” shape, wherein the end portions of the grating element has a larger diameter than the center portion disposed therebetween. A chirped grating is written or impressed within the portion of the core disposed in the center portion of the grating element. The center portion is tapered to allow different stresses to be applied along the grating length when the grating element is compressed longitudinally by force F, and thereby vary chirp of the grating to tunably compensate for dispersion.
摘要翻译：可调谐色散补偿装置包括呈大体积或大直径波导形式的光栅元件，其具有围绕内核设置的外包层。光栅元件可以被蚀刻，接地或机加工以形成大致“狗骨”形状，其中光栅元件的端部具有比设置在其间的中心部分更大的直径。啁啾光栅被写入或印在设置在光栅元件的中心部分的芯部分内。中心部分是锥形的，以允许当光栅元件被力F纵向压缩时沿着光栅长度施加不同的应力，从而改变光栅的啁啾线以可调谐地补偿色散。

40. 发明授权

US08886001B2 Sensing device having a large diameter D-shaped optical waveguide 有权
标题翻译：具有大直径D形光波导的感测装置
公开(公告)号：US08886001B2
公开(公告)日：2014-11-11
申请号：US13311854
申请日：2011-12-06
申请人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
发明人： Alan D. Kersey , Paul E. Sanders , Martin A. Putnam , Edward Michael Dowd
IPC分类号： G02B6/02 , H01S3/067 , G01B11/16 , G01D5/353 , G01K11/32 , G01L1/24 , G02B6/28 , G02B6/036 , G02B6/293 , G02B6/42 , H01S3/094
CPC分类号： H01S3/0675 , G01B11/18 , G01D5/353 , G01D5/3538 , G01K11/32 , G01L1/242 , G02B6/02 , G02B6/02052 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/2817 , G02B6/2821 , G02B6/2826 , G02B6/29377 , G02B6/4214 , H01S3/06708 , H01S3/094003 , H01S3/094007 , H01S3/094019 , Y10T29/49815 , Y10T29/49817
摘要： An optical sensor formed from an optical waveguide having at least one core surrounded by a cladding and a large diameter generally D-shaped portion is disclosed. Axial or compressive strain across the D-shaped cross section may be determined by measuring the change in polarization or birefringence of the light output from the sensor. A layer responsive to a parameter may be disposed on a flat portion of the D-shaped portion of the sensor. The refractive index of the layer changes and/or the layer applies a strain on the sensor in response to the parameter. Changes in the refractive index of the layer alters the light output from the sensor, which is measured over time and correlated to the parameter.
摘要翻译：公开了一种由光波导形成的光学传感器，该光波导具有由包层围绕的至少一个核心和大直径大致D形的部分。可以通过测量从传感器输出的光的偏振或双折射的变化来确定穿过D形横截面的轴向或压缩应变。响应于参数的层可以设置在传感器的D形部分的平坦部分上。层的折射率改变和/或层响应于参数在传感器上施加应变。层的折射率变化改变了传感器的光输出，其随时间测量并与参数相关。

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