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公开(公告)号：US20050094956A1
公开(公告)日：2005-05-05
申请号：US10878019
申请日：2003-11-04
申请人： Greg Parker , Martin Charlton , Majd Zoorob , Simon Cox
发明人： Greg Parker , Martin Charlton , Majd Zoorob , Simon Cox
CPC分类号： G02B6/1225 , B82Y20/00
摘要： The invention provides a photonic structure comprising a first region (3) formed from a material having a first refractive index; and an array of sub-regions (5) formed in the first region, each sub-region having a refractive index different to the first refractive index; wherein the array of sub-regions (5) can be defined by a plurality of rows and columns, wherein the position of each sub-region relative to adjacent sub-regions in each row and the properties of the sub-regions across each row are defined by parameters of a first type, and the position of each row relative to adjacent rows, and the properties of the sub-regions along each column are defined by parameters of a second type; and wherein at least one parameter of a first type and at least one parameter of the second type is varied systematically and independently across the array. The present invention gives rise to structures with photonic band structures that can be tailored to a particular application. A variation in the first type of parameter has a different effect to a variation in the second type of parameter. Variation in a first type of parameter alters the diffracting properties of each row in the stack of rows. Variation in a second type of parameter affects the reflective properties of the structure. According to another aspect of the invention, a method for manufacturing photonic structures is provided including a computer optimisation process in the design stage.
摘要翻译： 本发明提供了一种光子结构，其包括由具有第一折射率的材料形成的第一区域（3） 以及形成在所述第一区域中的子区域（5）的阵列，每个子区域具有与所述第一折射率不同的折射率; 其中子区域（5）的阵列可以由多个行和列定义，其中每个子区域相对于每行中的相邻子区域的位置以及横跨每一行的子区域的属性是 由第一类型的参数定义，并且每行相对于相邻行的位置，并且沿着每列的子区域的属性由第二类型的参数定义; 并且其中所述第一类型的至少一个参数和所述第二类型的至少一个参数在所述阵列上系统地和独立地变化。 本发明产生可以针对特定应用而定制的具有光子带结构的结构。 第一类参数的变化对第二类参数的变化具有不同的影响。 第一类参数的变化会改变堆栈行中每行的衍射属性。 第二类参数的变化会影响结构的反射特性。 根据本发明的另一方面，提供了一种制造光子结构的方法，其包括在设计阶段的计算机优化过程。
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公开(公告)号：US07162132B2
公开(公告)日：2007-01-09
申请号：US10619556
申请日：2003-07-16
申请人： Greg Parker , Martin Charlton , Majd Zoorob
发明人： Greg Parker , Martin Charlton , Majd Zoorob
IPC分类号： G02B6/10
CPC分类号： G02B6/02309 , B82Y20/00 , G02B6/1225
摘要： A waveguide structure according to the invention comprises a core layer (10), having a refractive index ncore, and an array of rods (11) in the core layer having a refractive index nrods. The refractive indices satisfy the inequality: nrods>ncore. In a planar waveguide structure buffer (12) and cladding (13) layers are included, having a refractive index nbuffer and ncladding respectively. The refractive indices then satisfy the inequality: nrods>ncore>ncladding and nbuffer. This condition provides greater vertical confinement of the E-field of an optical signal passing through the waveguide. Furthermore, it allows waveguides to be formed of a glassy material having a similar refractive index and core dimensions to that of a fiber. A high refractive index contrast within the photonic crystal region is used while totally eliminating the need for mode conversion to launch light in and out of the waveguide.
摘要翻译： 根据本发明的波导结构包括具有折射率n芯的芯层（10）和在芯层中的具有折射率n棒的棒（11）阵列 。 折射率满足不等式：n <！ - SIPO < 在平面波导结构中，包括缓冲器（12）和包层（13），分别具有折射率n SUB缓冲器和n 包层。 然后，折射率满足不等式：n <！ - SIPO
- > n 该条件提供了通过波导的光信号的E场的更大的垂直限制。 此外，它允许波导由具有与纤维相似的折射率和纤芯尺寸的玻璃状材料形成。 使用光子晶体区域内的高折射率对比度，同时完全消除了模式转换以将光引入和流出波导的需要。 -
公开(公告)号：US07016586B2
公开(公告)日：2006-03-21
申请号：US10465559
申请日：2003-06-20
申请人： Majd Zoorob , Martin Charlton , Greg Parker
发明人： Majd Zoorob , Martin Charlton , Greg Parker
IPC分类号： G02B6/10
CPC分类号： G02B6/02309 , B82Y20/00 , G02B6/02347 , G02B6/02366 , G02B6/02371 , G02B6/1225 , G02B2006/12147
摘要： There is provided a planar waveguide structure (700) having a first core layer (708), a second core layer (704) and a cladding layer (706), wherein the cladding layer (706) is disposed between the first core layer (708) and the second core layer (704) to form an inter-core cladding layer (706). The inter-core cladding layer (706) comprises a first region (722) having a first refractive index and an array of sub-regions (724) formed therein having a second refractive index. The subregions (724) do not extend into either the first or the second core layer, and they give rise to a photonic band structure region, which is effective to perturb an evanescent field of an optical signal propagating through the core layers.
摘要翻译： 提供了具有第一芯层（708），第二芯层（704）和覆层（706）的平面波导结构（700），其中包层（706）设置在第一芯层（708） ）和第二芯层（704）以形成芯间包层（706）。 芯间包层（706）包括具有第一折射率的第一区域（722）和在其中形成的具有第二折射率的子区域阵列（724）。 子区域（724）不延伸到第一或第二核心层中，并且它们产生光子带结构区域，其有效地扰乱通过核心层传播的光信号的消逝场。
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公开(公告)号：US20050047739A1
公开(公告)日：2005-03-03
申请号：US10648797
申请日：2003-08-27
申请人： Greg Parker , Jeremy Baumberg , James Wilkinson , Martin Charlton , Majd Zoorob , Maria Netti , Nicolas Perney , John Lincoln
发明人： Greg Parker , Jeremy Baumberg , James Wilkinson , Martin Charlton , Majd Zoorob , Maria Netti , Nicolas Perney , John Lincoln
CPC分类号： G02F1/353 , G02F1/365 , G02F2001/3528
摘要： There is provided a non-linear optical device for enhancing the bandwidth accessible in the nonlinear generation of an optical signal. The device comprises a planar optical waveguide, the planar optical waveguide being operative to generate an optical output from an optical input having an input bandwidth by means of a non-linear optical process, the optical output having a wavelength within an accessible bandwidth, wherein the planar optical waveguide is operative to enhance the accessible bandwidth such that the ratio of the accessible bandwidth to the input bandwidth is at least 4. The device is particularly applicable to broad optical continuum generation, but may also be used in a parametric oscillator or amplifier arrangement with broad tuning range.
摘要翻译： 提供了一种用于增强在光信号的非线性生成中可访问的带宽的非线性光学装置。 该设备包括平面光波导，平面光波导可操作以通过非线性光学过程从具有输入带宽的光输入产生光输出，该光输出具有可访问带宽内的波长，其中， 平面光波导可操作以增强可访问带宽，使得可访问带宽与输入带宽的比率至少为4.该装置特别适用于宽光连续谱生成，但也可用于参数振荡器或放大器布置 具有广泛的调谐范围。
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公开(公告)号：US07248770B2
公开(公告)日：2007-07-24
申请号：US10878019
申请日：2003-11-04
申请人： Greg Parker , Martin Charlton , Majd Zoorob , Simon James Cox
发明人： Greg Parker , Martin Charlton , Majd Zoorob , Simon James Cox
IPC分类号： G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00
摘要： The invention provides a photonic structure comprising a first region (3) formed from a material having a first refractive index; and an array of sub-regions (5) formed in the first region, each sub-region having a refractive index different to the first refractive index;wherein the array of sub-regions (5) can be defined by a plurality of rows and columns, wherein the position of each sub-region relative to adjacent sub-regions in each row and the properties of the sub-regions across each row are defined by parameters of a first type, and the position of each row relative to adjacent rows, and the properties of the sub-regions along each column are defined by parameters of a second type; and wherein at least one parameter of a first type and at least one parameter of the second type is varied systematically and independently across the array.The present invention gives rise to structures with photonic band structures that can be tailored to a particular application. A variation in the first type of parameter has a different effect to a variation in the second type of parameter. Variation in a first type of parameter alters the diffracting properties of each row in the stack of rows. Variation in a second type of parameter affects the reflective properties of the structure.According to another aspect of the invention, a method for manufacturing photonic structures is provided including a computer optimisation process in the design stage.
摘要翻译： 本发明提供了一种光子结构，其包括由具有第一折射率的材料形成的第一区域（3） 以及形成在所述第一区域中的子区域（5）的阵列，每个子区域具有与所述第一折射率不同的折射率; 其中子区域（5）的阵列可以由多个行和列定义，其中每个子区域相对于每行中的相邻子区域的位置以及横跨每一行的子区域的属性是 由第一类型的参数定义，并且每行相对于相邻行的位置，并且沿着每列的子区域的属性由第二类型的参数定义; 并且其中所述第一类型的至少一个参数和所述第二类型的至少一个参数在所述阵列上系统地和独立地变化。 本发明产生可以针对特定应用而定制的具有光子带结构的结构。 第一类参数的变化对第二类参数的变化具有不同的影响。 第一类参数的变化会改变堆栈行中每行的衍射属性。 第二类参数的变化会影响结构的反射特性。 根据本发明的另一方面，提供了一种制造光子结构的方法，其包括在设计阶段的计算机优化过程。
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公开(公告)号：US07116878B2
公开(公告)日：2006-10-03
申请号：US10421949
申请日：2003-04-24
申请人： Majd Zoorob , Martin Charlton , Greg Parker
发明人： Majd Zoorob , Martin Charlton , Greg Parker
IPC分类号： G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00
摘要： A waveguide structure (200) according to the invention comprises a core layer (210), a cladding layer (206) and a buffer layer (208). Sub-regions (204) are formed in the cladding layer (206) but not in the core layer (210). In one dimensional applications the sub-regions are slots: in two dimensional applications the sub-regions are rods. The rods or slots may be air-filled or filled with an in-fill material, (e.g. Si). The in-fill material, if present, enhances the contrast in dielectric constant between sub-regions (204) and the core layer (210).Sub-regions (204) may furthermore be formed in the portion of the buffer layer neighbouring the core layer. Slots or rods in the buffer may be air-filled or filled by an in-fill material.Substantially complete confinement of the mode in the core can be assured while still maintaining the ability to interact with the field within the photonic band structure region. Rather than perturb the majority of the field (which is confined in the core), it is possible to interact with the evanescent field in the cladding layer (or the buffer layer) without substantially affecting mode confinement.
摘要翻译： 根据本发明的波导结构（200）包括芯层（210），包覆层（206）和缓冲层（208）。 子区域（204）形成在包覆层（206）中，但不形成在芯层（210）中。 在一维应用中，子区域是槽：在二维应用中，子区域是棒。 杆或槽可以是空气填充的或填充有填充材料（例如Si）。 填充材料（如果存在）增强了子区域（204）和芯层（210）之间的介电常数的对比度。 子区域（204）还可以形成在与芯层相邻的缓冲层的部分中。 缓冲器中的槽或棒可以充满空气或由填充材料填充。 可以确保基本上完全限制核心中的模式，同时保持与光子带结构区域内的场相互作用的能力。 而不是扰乱大多数场（被限制在核心中），所以可以与包层（或缓冲层）中的消逝场相互作用，而不会基本上影响模式限制。
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公开(公告)号：US07027701B2
公开(公告)日：2006-04-11
申请号：US10701181
申请日：2003-11-05
申请人： Greg Parker , Martin Charlton , Majd Zoorob
发明人： Greg Parker , Martin Charlton , Majd Zoorob
IPC分类号： G02B6/10
CPC分类号： G02B6/02309 , B82Y20/00 , G02B6/02052 , G02B6/1225
摘要： An optical waveguide structure according to the invention comprises a core layer having a first refractive index ncore, an array of sub-regions within the core having a second refractive index nrods, the array of sub-regions giving rise to a photonic band structure within the core layer, and a cladding layer adjacent to the core layer having a refractive index ncladding, wherein: ncore>nrods[[∃]]≧ncladding and ncore−nrods>0.1. The structure of the present invention is less lossy than prior waveguide structures having photonic band structure regions. The out of plane divergence of light in the sub-regions is reduced as compared with air holes which are typically used in photonic crystal structures. As a result more light is coupled back into the core at the sub-region/core interface. Coupling of light into the buffer layer is also reduced. Furthermore, there are added advantages over the prior art associated with the fabrication of these structures.
摘要翻译： 根据本发明的光波导结构包括具有第一折射率核芯的芯层，芯内的子区域阵列具有第二折射率n ，在芯层内产生光子带结构的子区域阵列以及与芯层相邻的包层具有折射率n包层，其中：n < / SUB >> n 0.1。 本发明的结构比具有光子带结构区域的现有波导结构的损耗小。 与通常在光子晶体结构中使用的气孔相比，子区域中的光的平面外发散减小。 因此，更多的光在子区域/核心接口处耦合回核心。 将光耦合到缓冲层中也减少。 此外，相对于与这些结构的制造相关联的现有技术，存在附加的优点。
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公开(公告)号：US20050047702A1
公开(公告)日：2005-03-03
申请号：US10928428
申请日：2004-08-27
申请人： Greg Parker , Jeremy Baumberg , James Wilkinson , Martin Charlton , Majd Zoorob , Maria Netti , Nicolas Perney , John Lincoln
发明人： Greg Parker , Jeremy Baumberg , James Wilkinson , Martin Charlton , Majd Zoorob , Maria Netti , Nicolas Perney , John Lincoln
CPC分类号： G02F1/353 , G02F1/365 , G02F2001/3528
摘要： There is provided a non-linear optical device for enhancing the bandwidth accessible in the nonlinear generation of an optical signal. The device comprises a planar optical waveguide, the planar optical waveguide being operative to generate an optical output from an optical input having an input bandwidth by means of a non-linear optical process, the optical output having a wavelength within an accessible bandwidth, wherein the planar optical waveguide is operative to enhance the accessible bandwidth such that the ratio of the accessible bandwidth to the input bandwidth is at least 4. The device is particularly applicable to broad optical continuum generation, but may also be used in a parametric oscillator or amplifier arrangement with broad tuning range. The planar waveguide geometry permits easy integration in more complex photonic integrated circuits such as a Michelson interferometer for low coherence interferometry based optical coherence tomography.
摘要翻译： 提供了一种用于增强在光信号的非线性生成中可访问的带宽的非线性光学装置。 该设备包括平面光波导，平面光波导可操作以通过非线性光学过程从具有输入带宽的光输入产生光输出，该光输出具有可访问带宽内的波长，其中， 平面光波导可操作以增强可访问带宽，使得可访问带宽与输入带宽的比率至少为4.该装置特别适用于宽光连续谱生成，但也可用于参数振荡器或放大器布置 具有广泛的调谐范围。 平面波导几何形状允许在诸如用于低相干干涉测量的光学相干断层成像的迈克尔逊干涉仪之类的更复杂的光子集成电路中容易地集成。
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公开(公告)号：US06788863B2
公开(公告)日：2004-09-07
申请号：US10147328
申请日：2002-05-17
申请人： Gregory J. Parker , Martin Charlton , Majd Zoorob
发明人： Gregory J. Parker , Martin Charlton , Majd Zoorob
IPC分类号： G02B604
CPC分类号： G02B6/29394 , B82Y20/00 , G01N21/774 , G02B6/12014 , G02B6/1225 , G02B6/2813 , G02B6/2861 , G02B2006/12164 , G02F1/365 , H01S3/063 , H01S3/0635
摘要： An optical device is provided comprising a delay region having a photonic band structure, an optical input, an optical output, wherein the optical input is adapted to couple input optical signals into a predetermined mode in the delay region such that the optical signal is slowed and wherein the optical output includes a wavelength selective element. Input optical signals are coupled into a highly dispersive mode in the delay region in which the group velocity of the optical signal is reduced. The input signal, which has been delayed and dispersed, is recovered at the output of the device using the wavelength selective element.
摘要翻译： 提供了一种光学装置，其包括具有光子带结构的延迟区域，光学输入端口，光学输出端口，其中光学输入端适于将输入光学信号耦合到延迟区域中的预定模式，使得光信号变慢， 其中所述光输出包括波长选择元件。在光信号的组速度减小的延迟区域中，输入光信号耦合到高色散模式。 已经被延迟和分散的输入信号在使用波长选择元件的器件的输出处被恢复。
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公开(公告)号：US08556438B2
公开(公告)日：2013-10-15
申请号：US13056806
申请日：2009-07-30
IPC分类号： F21V9/16
CPC分类号： H01L33/005 , F21K9/00 , H01L25/0753 , H01L33/50 , H01L2924/0002 , H05B33/0857 , H05B33/0869 , H05B33/0872 , H01L2924/00
摘要： A tunable color LED module comprises at least two sub-modules, each comprising an LED (104), a wavelength converting element (WCE) (201, 112, 203) and a reflector cup. The total light emitted by the module comprises light generated from each LED and WCE and the module is configured to emit a total light having a predefined color chromaticity when activation properties of the LEDs are managed appropriately. The total light may have a broad white emission spectrum (106). The module combines the benefits of a low cost with uniform chromaticity properties in the far field, and offers long and controlled lifetime at the same time as flexibility and intelligence of tunable color chromaticity, Color Rendering Index (CRI) and intensity, either at manufacture or in an end user lighting application. A controlled LED module system comprises a control system for the managing activation properties of the LEDs in the sub-modules. Also described is a method of manufacture.
摘要翻译： 可调谐彩色LED模块包括至少两个子模块，每个子模块包括LED（104），波长转换元件（WCE）（201,112,203）和反射杯。 由模块发出的总光包括从每个LED和WCE产生的光，并且当LED的激活特性被适当地管理时，该模块被配置为发射具有预定颜色色度的总光。 总光可以具有宽的白色发射光谱（106）。 该模块结合了低成本的优点和远场均匀的色度特性，同时提供长时间和可控的使用寿命，同时灵活性和智能化可调色彩色彩，颜色渲染指数（CRI）和强度，无论是在制造或 在最终用户照明应用中。 受控LED模块系统包括用于管理子模块中的LED的激活特性的控制系统。 还描述了一种制造方法。
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