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1. 发明申请

WO2006008447A1 MULTIWAVELENGTH OPTICAL SENSORS 审中-公开
标题翻译：多波长光传感器
公开(公告)号：WO2006008447A1
公开(公告)日：2006-01-26
申请号：PCT/GB2005/002680
申请日：2005-07-07
申请人： UNIVERSITY OF SOUTHAMPTON , EMMERSON, Gregory, Daniel , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
发明人： EMMERSON, Gregory, Daniel , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
IPC分类号： G01N21/45
CPC分类号： G01N21/4133 , G01N21/774
摘要： An optical sensor comprises at least two planar Bragg gratings defined on a single substrate and arranged to receive light from a light source, each grating having a wavelength filtering response that varies with an effective modal index experienced by light propagating in the Bragg grating and a Bragg wavelength different to those of the other gratings, and at least one sample window overlying one or more of the gratings that can receive a sample of fluid that affects the effective modal index and response of the grating, the gratings filtering the light and outputting the filtered light for spectral analysis, from which the refractive index and related properties of the fluid can be determined. One or more of the gratings can be a reference grating used to compensate for temperature and other disturbances to the sensors. Gratings may have individual sample windows for testing separate fluid samples, or may share a common window so that a single fluid can be tested using several gratings.
摘要翻译：光学传感器包括限定在单个基板上并布置成接收来自光源的光的至少两个平面布拉格光栅，每个光栅具有随着在布拉格光栅中传播的光所经历的有效模式指数而变化的波长滤波响应;以及布拉格波长不同于其他光栅的波长，以及覆盖一个或多个光栅的至少一个样本窗口，其可以接收影响光栅的有效模态指数和响应的流体样本，光栅过滤光并输出滤波的用于光谱分析的光，可以从其中确定流体的折射率和相关性质。一个或多个光栅可以是用于补偿传感器的温度和其它干扰的参考光栅。光栅可以具有用于测试单独的液体样品的单独的样品窗口，或者可以共享共同的窗口，使得可以使用几个光栅来测试单个流体。

2. 发明申请

WO2009101390A1 A PROCESS FOR POLING A FERROELECTRIC MATERIAL DOPED WITH A METAL 审中-公开
标题翻译：一种用金属粉末掺杂的电介质材料的方法
公开(公告)号：WO2009101390A1
公开(公告)日：2009-08-20
申请号：PCT/GB2009/000358
申请日：2009-02-09
申请人： UNIVERSITY OF SOUTHAMPTON , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , MAJOR, Huw, Edward
发明人： GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , MAJOR, Huw, Edward
IPC分类号： G02F1/355 , G02F1/377
CPC分类号： G02F1/3558 , G02F1/3775
摘要： A process for poling a ferroelectric material doped with a metal, which process comprises: (i) defining an electrode pattern on a -z face of a crystal of the ferroelectric material doped with the metal; (ii) providing an electrode material; (iii) poling at a temperature of not more than 45° C; and (iv) poling by a two-stage voltage-controlled application of electric field based on a first poling stage of domain nucleation and a second poling stage of domain spreading.
摘要翻译：一种用于极化掺杂有金属的铁电材料的方法，该方法包括：（i）在掺杂有金属的铁电材料的晶体的-z面上限定电极图案; （ii）提供电极材料; （iii）在不超过45℃的温度下极化; 和（iv）基于区域成核的第一极化阶段和域扩展的第二极化阶段的两阶段电压控制施加电场的极化。

3. 发明申请

WO2005052682A1 FABRICATION OF OPTICAL WAVEGUIDES IN PERIODICALLY POLED LITHIUM NIOBATE 审中-公开
标题翻译：周期性碘化锂中的光波导的制造
公开(公告)号：WO2005052682A1
公开(公告)日：2005-06-09
申请号：PCT/GB2004/004806
申请日：2004-11-16
申请人： UNIVERSITY OF SOUTHAMPTON , SMITH, Peter, George, Robin , GAWITH, Corin, Barry, Edmund , MING, Lu
发明人： SMITH, Peter, George, Robin , GAWITH, Corin, Barry, Edmund , MING, Lu
IPC分类号： G02F1/355
CPC分类号： G02F1/3558 , G02B2006/121 , G02B2006/12107
摘要： A method of fabricating an optical waveguide (18) comprises providing a sample of lithium niobate (10) that has one or more periodically poled gratings made by electric field poling, applying a patterned surface layer of metallic zinc (16) to a z-face of the sample so that the layer (16) has a pattern corresponding to an intended pattern of waveguides (18) to be written into the lithium niobate, and heating the sample to diffuse the metallic zinc (16) into the lithium niobate so as to form an optical waveguiding structure (18) within the sample.
摘要翻译：一种制造光波导（18）的方法包括提供具有由电场极化制成的一个或多个周期性极化光栅的铌酸锂（10）样品，将金属锌（16）的图案化表面层施加到z面使得层（16）具有对应于要写入铌酸锂的波导（18）的期望图案的图案，并且加热样品以将金属锌（16）扩散到铌酸锂中，从而形成样品内的光波导结构（18）。

4. 发明申请

WO2009093004A1 COMPENSATION FOR THE GOUY PHASE SHIFT IN QUASI-PHASE MATCHING 审中-公开
标题翻译：对相位匹配中的GOUY相位移的补偿
公开(公告)号：WO2009093004A1
公开(公告)日：2009-07-30
申请号：PCT/GB2009/000108
申请日：2009-01-16
申请人： UNIVERSITY OF SOUTHAMPTON , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , MAJOR, Huw, Edward
发明人： GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , MAJOR, Huw, Edward
IPC分类号： G02F1/35 , G02F1/377 , G02F1/39
CPC分类号： G02F1/3544 , G02F1/3775 , G02F1/39
摘要： A sample of nonlinear optical material for use in a nonlinear optical device contains a grating comprising alternating regions of inverted and non-inverted nonlinear coefficient of the material, with the regions separated by boundaries positioned such that the grating can provide quasi-phase matching of a selected nonlinear optical interaction, and compensate for phase mismatch arising from the Gouy phase shift of one or more focused optical beams involved in the interaction. The boundary positions can be calculated for second harmonic generation or optical parametric generation and oscillation.
摘要翻译：用于非线性光学器件的非线性光学材料的样本包含光栅，其包括材料的反相和非反相非线性系数的交替区域，其中由边界分隔的区域定位成使得光栅可以提供准相位匹配选择的非线性光学相互作用，并且补偿由相互作用中涉及的一个或多个聚焦光束的Gouy相移引起的相位偏移。可以计算二次谐波产生或光参量产生和振荡的边界位置。

5. 发明申请

WO2008035067A1 METHOD OF FABRICATING A PLANAR SUBSTRATE HAVING OPTICAL WAVEGUIDES 审中-公开
标题翻译：制造具有光波导的平面基板的方法
公开(公告)号：WO2008035067A1
公开(公告)日：2008-03-27
申请号：PCT/GB2007/003552
申请日：2007-09-18
申请人： UNIVERSITY OF SOUTHAMPTON , ADIKAN, Faisal, Rafiq, Mahamd , WEBB, Andrew, Simon , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , PAYNE, David, Neil , SAHU, Jayanta, Kumar
发明人： ADIKAN, Faisal, Rafiq, Mahamd , WEBB, Andrew, Simon , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin , PAYNE, David, Neil , SAHU, Jayanta, Kumar
IPC分类号： C03B19/14 , G02B6/13
CPC分类号： G02B6/132 , C03B19/1469 , C03B2201/34 , G02B6/12007
摘要： A method of producing a planar substrate having waveguide channels, which method comprises: (i) providing a tube (6) of a substrate material; (ii) depositing silica layers (110) on the inside of the tube (6), the silica layers (110) being doped with a photosensitive material; (iii) drawing the tube (6) so that the cross-sectional size of the tube (109) is reduced; (iv) before or after the reducing of the cross-sectional size of the tube (6), causing the tube (6) to collapse into a flat shape by applying a low pressure to the tube, whereby the deposited silica layers together form a photosensitive silica layer (111); (v) cutting to required lengths the tube (6) which has been collapsed and reduced in cross-sectional size; and (vi) using laser writing to define waveguide channels in the cut lengths of the tube (6) and thereby to produce the planar substrate having the waveguide channels.
摘要翻译：一种制造具有波导通道的平面基板的方法，该方法包括：（i）提供基板材料的管（6）; （ii）在所述管（6）的内部沉积二氧化硅层（110），所述二氧化硅层（110）掺杂感光材料; （iii）拉伸管（6），使得管（109）的横截面尺寸减小; （iv）在减小管（6）的横截面尺寸之前或之后，通过对管施加低压使管（6）塌陷成平坦形状，由此沉积的二氧化硅层一起形成光敏二氧化硅层（111）; （v）切割所需的长度，其已经被折叠并且具有横截面尺寸减小的管（6）; 和（vi）使用激光写入来限定管（6）的切割长度中的波导通道，从而产生具有波导通道的平面基板。

6. 发明申请

WO2006008448A1 OPTICAL SENSORS 审中-公开
标题翻译：光传感器
公开(公告)号：WO2006008448A1
公开(公告)日：2006-01-26
申请号：PCT/GB2005/002682
申请日：2005-07-07
申请人： UNIVERSITY OF SOUTHAMPTON , EMMERSON, Gregory, Daniel , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
发明人： EMMERSON, Gregory, Daniel , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
IPC分类号： G01N21/41
CPC分类号： G01N21/4133 , G01N21/553
摘要： An optical sensor comprises a sensing element comprising a waveguide grating with a response that varies with an effective modal index experienced by light propagating in the grating and a sample window for receiving fluid which affects the effective modal index to modify the response, the sensing element arranged to receive light from a light source and to output the light after filtering; and an analysing element comprising a second waveguide grating having a second response, and arranged to receive light output by the sensing element and to output the light after filtering for detection by an optical power detector. The combination of the two gratings converts changes in the wavelength of light output by the sensing element in response to the sample of fluid to changes in the amount of light, allowing the fluid index to be deduced from a measurement of optical power. The two elements may be fabricated on a single substrate to reduce errors from environmental disturbances such as temperature changes.
摘要翻译：光学传感器包括感测元件，该感测元件包括波导光栅，其具有随着在光栅中传播的光所经历的有效模式指数而变化的响应，以及用于接收影响有效模态指数以改变响应的流体的样本窗口，所述感测元件布置从光源接收光并过滤后输出光; 以及分析元件，包括具有第二响应的第二波导光栅，并且被布置成接收由所述感测元件输出的光，并且在滤光之后输出所述光以由光功率检测器进行检测。两个光栅的组合将响应于流体样品的感测元件的光输出波长的变化转换成光量的变化，允许从光功率的测量推导出流体指数。两个元件可以在单个基板上制造以减少诸如温度变化的环境干扰的误差。

7. 发明申请

WO2008152377A1 IMPROVED ELECTRIC FIELD POLING OF FERROELECTRIC MATERIALS 审中-公开
标题翻译：改进的电场材料电场分析
公开(公告)号：WO2008152377A1
公开(公告)日：2008-12-18
申请号：PCT/GB2008/001993
申请日：2008-06-11
申请人： UNIVERSITY OF SOUTHAMPTON , GAWITH, Corin, Barry, Edmund , MAJOR, Huw, Edward , MING, Lu , SMITH, Peter, George, Robin
发明人： GAWITH, Corin, Barry, Edmund , MAJOR, Huw, Edward , MING, Lu , SMITH, Peter, George, Robin
IPC分类号： G02F1/355
CPC分类号： G02F1/3558 , G02F2001/3548 , G02F2202/07
摘要： A method of inducing a periodic variation of nonlinearity value in a sample of ferroelectric material comprises arranging a pair of electrodes on opposite faces of the sample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after the predetermined time, applying a current-controlled poling voltage across the sample using the electrodes, to produce domain inversion in the sample according to the desired pattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field or more, and applied for a pre-determined time between 1 and 100 seconds.
摘要翻译：在铁电材料样品中诱导非线性值的周期性变化的方法包括在样品的相对面上布置一对电极，一个电极限定期望的非线性变化图案，在样品上施加预偏置电压预定时间使用电极，预偏压小于铁电材料的矫顽场; 并且在预定时间之后，使用电极在样品上施加电流控制的极化电压，以根据期望的非线性变化模式在样品中产生域反转。预偏置电压可以是矫顽场的75％或更多，并且施加在1和100秒之间的预定时间。

8. 发明申请

WO2008125797A1 WAVEGUIDE DEVICES USING EVANESCENT COUPLING BETWEEN WAVEGUIDES AND GROOVES 审中-公开
标题翻译：使用波形与栅格之间的过渡耦合的波导装置
公开(公告)号：WO2008125797A1
公开(公告)日：2008-10-23
申请号：PCT/GB2008/000995
申请日：2008-03-20
申请人： UNIVERSITY OF SOUTHAMPTON , GATES, James, Christopher , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
发明人： GATES, James, Christopher , GAWITH, Corin, Barry, Edmund , SMITH, Peter, George, Robin
IPC分类号： G01N21/77 , G02B6/12 , G02B6/134 , H01S5/40
CPC分类号： G01N21/774 , G01N21/4133 , G02B6/12004 , G02B6/12007 , G02B6/134 , G02B2006/12107 , G02B2006/12121 , G02B2006/12138 , G02B2006/12142 , H01S3/022 , H01S3/0635 , H01S3/1055 , H01S3/213 , H01S3/30
摘要： An optical waveguide device (10) comprises a planar substrate with a lower cladding layer (14), a core layer (16) and an upper cladding layer (18), a groove (20) in the substrate that extends at least into the core layer (16), and a waveguiding channel (22) in the core layer (16), wherein at least a part of the waveguiding channel (22), which may contain a Bragg grating, is sufficiently proximate to the groove (20) in the plane of the substrate for an evanescent field of light propagating in the waveguiding channel (22) to extend laterally into the groove (20). Material contained in the groove modifies the properties of the waveguiding channel, so that a sample of material can be analysed or an active material can be used to modulate the propagating light. The groove (20) can be made before the waveguide (22). The groove (20) can be made by cutting into the substrate with a saw and the waveguide (22) can be made by direct writing in the core layer (16) with an ultraviolet beam.
摘要翻译：一种光波导器件（10）包括具有下包层（14），芯层（16）和上覆层（18）的平面衬底，衬底中的凹槽（20）至少延伸到芯层（16）和芯层（16）中的波导通道（22），其中可以包含布拉格光栅的波导通道（22）的至少一部分足够靠近凹槽（20）用于在波导通道（22）中传播的光的消逝场的衬底的平面横向延伸到沟槽（20）中。包含在凹槽中的材料修改了波导通道的特性，使得可以分析材料样品或者可以使用活性材料来调制传播光。凹槽（20）可以在波导（22）之前制成。槽（20）可以通过用锯切入基板而制成，并且波导（22）可以通过用紫外线直接写入芯层（16）而制成。

9. 发明申请

WO2004049024A1 FABRICATION OF WAVEGUIDES AND BRAGG GRATINGS WITH UV-IRRADIATION 审中-公开
标题翻译：紫外线辐射波长和布拉格光栅的制备
公开(公告)号：WO2004049024A1
公开(公告)日：2004-06-10
申请号：PCT/GB2003/002141
申请日：2003-05-19
申请人： UNIVERSITY OF SOUTHAMPTON , SMITH, Peter, George, Robin , WILLIAMS, Richard, Bird , ALBANIS, Vassilios , GAWITH, Corin, Barry, Edmund , WATTS, Samuel, Paul , EMMERSON, Gregory, Daniel
发明人： SMITH, Peter, George, Robin , WILLIAMS, Richard, Bird , ALBANIS, Vassilios , GAWITH, Corin, Barry, Edmund , WATTS, Samuel, Paul , EMMERSON, Gregory, Daniel
IPC分类号： G02B6/124
CPC分类号： G02B6/13 , G02B6/02152 , G02B6/12007 , G02B6/124
摘要： A method of simultaneously defining a waveguide and grating in a sample of photosensitive material comprises providing a sample of material (24) having a region which is photosensitive to light of a specific wavelength, generating a spot of light (22) at the specific wavelength, the spot having a periodic intensity pattern of high and low intensity fringes, and a width which is related to the width of the channel, positioning the spot within the photosensitive region and causing relative movement between the sample and the light spot along the desired path of the waveguide/grating define a channel of altered refractive index by exposing parts of the photosensitive region to the light spot. Modulation of the light spot to produce multiple exposures produces a grating, while continuous exposure results in a uniform waveguide. These structures can be written in straight lines or around curves, and can be accurately overwritten, so that complex optical devices can be produced in a single fabrication step.
摘要翻译：在感光材料的样本中同时限定波导和光栅的方法包括提供具有对特定波长的光敏感的区域的材料样品（24），产生特定波长的光点（22）具有高强度条纹和低强度条纹的周期性强度图案的斑点和与通道宽度相关的宽度，将斑点定位在感光区域内，并引起样品和光点之间沿着期望路径的相对运动波导/光栅通过将光敏区域的一部分暴露于光点来限定改变的折射率的通道。调制光斑以产生多次曝光产生光栅，而连续曝光导致均匀的波导。这些结构可以以直线或曲线附近写出，并且可以被精确地覆盖，使得可以在单个制造步骤中生产复杂的光学器件。

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