公开(公告)号：US20050111002A1

公开(公告)日：2005-05-26

申请号：US10996166

申请日：2004-11-23

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: G01N21/63 ,  G01N21/00

CPC classification number: G01N21/636

Abstract: A method determines a nonlinearity profile of a material. The method includes providing a magnitude of a Fourier transform of a measured nonlinearity profile measured from the material. The method further includes providing an estimated phase term of the Fourier transform of the measured nonlinearity profile. The method further includes multiplying the magnitude and the estimated phase term to generate an estimated Fourier transform. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform. The method further includes calculating a real component of the inverse Fourier transform to generate an estimated nonlinearity profile.

Abstract translation: 一种方法确定材料的非线性轮廓。 该方法包括提供从材料测量的测量的非线性轮廓的傅里叶变换的幅度。 该方法还包括提供所测量的非线性分布的傅里叶变换的估计相位项。 该方法还包括将幅度和估计相位项相乘以产生估计的傅里叶变换。 该方法还包括计算估计的傅立叶变换的傅立叶逆变换。 该方法还包括计算逆傅里叶变换的实分量以产生估计的非线性分布。

公开(公告)号：US20050118420A1

公开(公告)日：2005-06-02

申请号：US10938755

申请日：2004-09-10

Applicant: Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet

Inventor： Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet

IPC: A61K31/135 ,  A61K31/137 ,  A61K31/4168 ,  A61K31/498 ,  A61K31/506 ,  A61K31/517 ,  A61K45/06 ,  D02G3/00

CPC classification number: G02B6/02328 ,  A61K31/135 ,  A61K31/137 ,  A61K31/4168 ,  A61K31/498 ,  A61K31/506 ,  A61K31/517 ,  A61K45/06 ,  G02B6/02338 ,  Y10T428/2913 ,  Y10T428/2929 ,  A61K2300/00

Abstract: Coupling of core modes to surface modes in an air-core photonic-bandgap fiber (PBF) can cause large propagation losses. Computer simulations analyze the relationship between the geometry and the presence of surface modes in PBFs having a triangular hole pattern and identify ranges of core characteristic dimensions (e.g., radii) for which the fiber supports no surface modes (i.e., only core modes are present) over the entire wavelength range of the bandgap. In particular, for a hole spacing Λ and a hole radius ρ=0.47Λ, the core supports a single mode and supports no surface modes for core radii between about 0.7Λ and about 1.05Λ, which suggests that such fibers should exhibit a very low propagation loss. The existence of surface modes can be predicted simply and expediently by studying either the bulk modes alone or the geometry of the fiber without requiring a full analysis of the defect modes.

Abstract translation: 核心模式与空芯光子带隙光纤（PBF）中的表面模式的耦合可能导致较大的传播损耗。 计算机模拟分析了具有三角孔图案的PBF中的几何形状和表面模式的存在之间的关系，并且识别纤维不支持表面模式（即，仅存在核心模式）的核心特征尺寸（例如，半径）的范围， 在带隙的整个波长范围内。 特别地，对于孔间距λ和孔半径rho = 0.47Lambda，芯支撑单模并且不支持在约0.7λ和约1.05λ之间的核心半径的表面模式，这表明这种光纤应呈现非常低的 传播损失。 表面模式的存在可以通过单独研究单独的体模式或光纤的几何形状而不需要对缺陷模式进行全面分析来简单和方便地预测。

公开(公告)号：US20070053400A1

公开(公告)日：2007-03-08

申请号：US11508550

申请日：2006-08-22

Applicant: Supriyo Sinha ,  Michel Digonnet ,  Robert Byer ,  Jens Limpert

Inventor： Supriyo Sinha ,  Michel Digonnet ,  Robert Byer ,  Jens Limpert

IPC: H01S3/03

CPC classification number: H01S3/0675 ,  H01S3/06716 ,  H01S3/06791 ,  H01S3/07 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/1055

Abstract: Photodarkening in active fiber or waveguide devices (e.g. lasers, amplifiers, and incoherent sources such as ASE sources) can be reduced by altering the dopant concentration along the length of the doped fiber. A fiber or waveguide device includes two or more intentionally doped fiber or waveguide sections having different concentrations of one or more dopants. The dopants provide optical gain responsive to pump radiation provided to the fiber device by a pump source. A first optical intensity in a first of the fiber or waveguide sections is greater than a second optical intensity in a second of the fiber or waveguide sections. A first dopant concentration in the first fiber or waveguide section is lower than a second dopant concentration in the second fiber or waveguide section. Thus the dopant concentration is reduced in sections of the fiber or waveguide device having a higher optical intensity. The optical intensity can be due to pump radiation and/or signal radiation. Reduced dopant concentration in regions of high optical intensity reduces photodarkening.

Abstract translation: 通过改变沿着掺杂光纤的长度的掺杂剂浓度，可以减少有源光纤或波导器件（例如，激光器，放大器和非相干源，例如ASE源）中的光标。 光纤或波导器件包括具有不同浓度的一种或多种掺杂剂的两个或更多个有意掺杂的光纤或波导部分。 掺杂剂通过泵浦源提供响应于提供给光纤装置的泵浦辐射的光学增益。 第一光纤或波导部分中的第一光强度大于第二光纤或波导部分中的第二光强度。 第一光纤或波导部分中的第一掺杂剂浓度低于第二光纤或波导部分中的第二掺杂剂浓度。 因此，具有较高光强度的光纤或波导器件的部分的掺杂剂浓度降低。 光强度可能是由于泵浦辐射和/或信号辐射。 高光强度区域的掺杂剂浓度降低会降低光暗化。

公开(公告)号：US20070274623A1

公开(公告)日：2007-11-29

申请号：US11681073

申请日：2007-03-01

Applicant: Matthew Terrel ,  Michel Digonnet ,  Shanhui Fan

Inventor： Matthew Terrel ,  Michel Digonnet ,  Shanhui Fan

IPC: G02B6/032

CPC classification number: G02F1/0136 ,  G02B6/02304 ,  G02B6/02328 ,  G02F1/0134 ,  G02F2202/32

Abstract: A polarization controller is provided. The polarization controller includes a hollow-core photonic-bandgap fiber, wherein at least a portion of the hollow-core photonic-bandgap fiber has a longitudinal axis and is twisted about the longitudinal axis.

Abstract translation: 提供了偏振控制器。 偏振控制器包括中空光子带隙光纤，其中至少一部分中空光子带隙光纤具有纵向轴线并围绕纵向轴线扭曲。

公开(公告)号：US20070189686A1

公开(公告)日：2007-08-16

申请号：US11737683

申请日：2007-04-19

Applicant: Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet ,  Vinayak Dangui

Inventor： Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet ,  Vinayak Dangui

IPC: G02B6/02

CPC classification number: G02B6/02328 ,  G02B6/02338 ,  G02B6/02347

Abstract: A photonic-bandgap fiber includes a photonic crystal lattice with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The photonic-bandgap fiber further includes a core and a core ring surrounding the core and having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

Abstract translation: 光子带隙光纤包括具有第一折射率的材料和形成在其中的区域的图案的光子晶格。 每个区域具有低于第一折射率的第二折射率。 光子带隙光纤还包括芯部和围绕芯部的芯环，并且具有内周边，外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。

公开(公告)号：US20060133763A1

公开(公告)日：2006-06-22

申请号：US11223216

申请日：2005-09-09

Applicant: Vinayak Dangui ,  Michel Digonnet ,  Gordon Kino

Inventor： Vinayak Dangui ,  Michel Digonnet ,  Gordon Kino

IPC: G02B6/00

CPC classification number: G02B6/02328 ,  B82Y20/00 ,  G02B6/02323 ,  G02B6/02338 ,  G02B6/02347

Abstract: A method and apparatus models one or more electromagnetic field modes of a waveguide. The method includes sampling a two-dimensional cross-section of the waveguide. The method further includes calculating a first matrix having a plurality of elements and having a first bandwidth using the sampled two-dimensional cross-section of the waveguide. The plurality of elements of the first matrix represents an action of Maxwell's equations on a transverse magnetic field within the waveguide. The method further includes rearranging the plurality of elements of the first matrix to form a second matrix having a second bandwidth smaller than the first bandwidth. The method further includes shifting the second matrix and inverting the shifted second matrix to form a third matrix. The method further includes calculating one or more eigenvalues or eigenvectors of the third matrix corresponding to one or more modes of the waveguide.

公开(公告)号：US20080030741A1

公开(公告)日：2008-02-07

申请号：US11770660

申请日：2007-06-28

Applicant: Michel Digonnet ,  Hyang Kim ,  Stephane Blin ,  Vinayak Dangui ,  Gordon Kino

Inventor： Michel Digonnet ,  Hyang Kim ,  Stephane Blin ,  Vinayak Dangui ,  Gordon Kino

IPC: G01B9/02

CPC classification number: G01D5/3538 ,  G01C19/721 ,  G01D5/35322 ,  G02B6/02328

Abstract: An optical sensor includes a directional coupler comprising at least a first port, a second port, and a third port. The first port is in optical communication with the second port and with the third port such that a first optical signal received by the first port is split into a second optical signal that propagates to the second port and a third optical signal that propagates to the third port. The optical sensor further includes a photonic bandgap fiber having a hollow core and an inner cladding generally surrounding the core. The photonic bandgap fiber is in optical communication with the second port and with the third port. The second optical signal and the third optical signal counterpropagate through the photonic bandgap fiber and return to the third port and the second port, respectively. The photonic bandgap fiber has a phase thermal constant S less than 8 parts-per-million per degree Celsius.

Abstract translation: 光学传感器包括至少包括第一端口，第二端口和第三端口的定向耦合器。 第一端口与第二端口和第三端口光通信，使得由第一端口接收的第一光信号被分裂成传播到第二端口的第二光信号和传播到第三端口的第三光信号 港口。 光学传感器还包括具有中空芯和通常围绕芯的内包层的光子带隙光纤。 光子带隙光纤与第二端口和第三端口光通信。 第二光信号和第三光信号通过光子带隙光纤反向传播并分别返回到第三端口和第二端口。 光子带隙光纤的相位热常数S小于每摄氏摄氏度百万分之八。

公开(公告)号：US20070274652A1

公开(公告)日：2007-11-29

申请号：US11681019

申请日：2007-03-01

Applicant: Vinayak Dangui ,  Michel Digonnet ,  Gordon Kino

Inventor： Vinayak Dangui ,  Michel Digonnet ,  Gordon Kino

IPC: G02B6/036

CPC classification number: G02B6/02042 ,  G02B6/02328 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/2821

Abstract: An optical coupler includes a first optical port, a second optical port, a third optical port, and a fourth optical port. The optical coupler further includes a photonic-bandgap fiber having a cladding, a first core, and a second core. The cladding includes a material with a first refractive index and regions within the cladding. The regions have a second refractive index lower than the first refractive index. The first core is substantially surrounded by the cladding. The first core is optically coupled to the first optical port and to the second optical port. The second core is substantially surrounded by the cladding. The second core is optically coupled to the third optical port and to the fourth optical port. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core such that the first core is optically coupled to the second core. The first core, the second core, or both the first core and the second core is hollow.

Abstract translation: 光耦合器包括第一光口，第二光口，第三光口和第四光口。 光耦合器还包括具有包层，第一芯和第二芯的光子带隙光纤。 包层包括具有第一折射率的材料和包层内的区域。 这些区域具有低于第一折射率的第二折射率。 第一芯基本上被包层包围。 第一核心光耦合到第一光端口和第二光端口。 第二芯基本上被包层包围。 第二核心光耦合到第三光端口和第四光端口。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开，使得第一芯与光学耦合到第二芯。 第一核心，第二核心或第一核心和第二核心都是空心的。

公开(公告)号：US20070081165A1

公开(公告)日：2007-04-12

申请号：US11414506

申请日：2006-04-28

Applicant: Onur Kilic ,  Olav Solgaard ,  Michel Digonnet ,  Gordon Kino

Inventor： Onur Kilic ,  Olav Solgaard ,  Michel Digonnet ,  Gordon Kino

IPC: G01B9/02

CPC classification number: G01H9/00 ,  G01H9/004

Abstract: An acoustic sensor includes at least one photonic crystal structure having at least one optical resonance with a resonance frequency and a resonance lineshape. The acoustic sensor further includes a housing substantially surrounding the at least one photonic crystal structure and mechanically coupled to the at least one photonic crystal structure. At least one of the resonance frequency and the resonance lineshape is responsive to acoustic waves incident upon the housing.

Abstract translation: 声传感器包括至少一个光子晶体结构，其具有至少一个具有谐振频率和谐振线形的光学谐振。 声学传感器还包括壳体，其基本上围绕所述至少一个光子晶体结构并且机械耦合到所述至少一个光子晶体结构。 谐振频率和谐振线形形状中的至少一个响应于入射到壳体上的声波。

公开(公告)号：US20080112678A1

公开(公告)日：2008-05-15

申请号：US11971181

申请日：2008-01-08

Applicant: Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet ,  Vinayak Dangui

Inventor： Hyang Kim ,  Shanhui Fan ,  Gordon Kino ,  Jonghwa Shin ,  Michel Digonnet ,  Vinayak Dangui

IPC: G02B6/032 ,  G02B6/02 ,  C03B37/023

CPC classification number: G02B6/02328 ,  G02B6/02338 ,  G02B6/02347

Abstract: An optical fiber includes a cladding with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The optical fiber further includes a core region and a core ring surrounding the core region and having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

Abstract translation: 光纤包括具有第一折射率的材料和其中形成的区域的图案的包层。 每个区域具有低于第一折射率的第二折射率。 光纤还包括芯区域和围绕芯区域的芯环，并且具有内周边，外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。