公开(公告)号：US20070282569A1

公开(公告)日：2007-12-06

申请号：US11841587

申请日：2007-08-20

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: G06F15/00

CPC classification number: G01N21/636

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

Abstract translation: 方法估计材料的非线性轮廓。 该方法包括提供从材料测量的测量的非线性轮廓的变换幅度。 该方法还包括提供测量的非线性分布的变换的估计相位项。 该方法还包括乘以幅度和估计的相位项以产生估计变换。 该方法还包括计算估计变换的逆变换。 该方法还包括计算逆变换的实数分量以生成估计的非线性分布。

公开(公告)号：US20070055466A1

公开(公告)日：2007-03-08

申请号：US11384230

申请日：2006-03-17

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: G01R29/26

CPC classification number: G04F13/02 ,  G01J11/00

Abstract: A method determines a complex electric field temporal profile of an optical pulse. The method includes providing a measured magnitude of the Fourier transform of a complex electric field temporal profile of a pulse sequence comprising the optical pulse and a dummy pulse. The method further includes providing an estimated phase term of the Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex electric field temporal profile of the pulse sequence by applying at least one constraint to the inverse Fourier transform.

Abstract translation: 一种方法确定光脉冲的复电场时间曲线。 该方法包括提供包括光脉冲和伪脉冲的脉冲序列的复电场时间分布的傅里叶变换的测量幅度。 该方法还包括提供脉冲序列的复电场时间分布的傅立叶变换的估计相位项。 该方法还包括乘以测量的幅度和估计的相位项以产生脉冲序列的复电场时间曲线的估计傅立叶变换。 该方法还包括计算傅立叶逆变换的傅立叶逆变换，其中逆傅里叶变换是时间的函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算脉冲序列的估计复电场时间分布。

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：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：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：US20070027689A1

公开(公告)日：2007-02-01

申请号：US11396931

申请日：2006-04-03

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: G10L13/00

CPC classification number: G01J11/00 ,  G04F13/02

Abstract: A method determines a transient response of a sample. The method includes providing a measured magnitude of the Fourier transform of a complex electric field temporal profile of a pulse sequence comprising a probe pulse and a dummy pulse, wherein the probe pulse is indicative of the transient response of the sample. The method further includes providing an estimated phase term of the Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the complex electric field temporal profile of the pulse sequence. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform, wherein the inverse Fourier transform is a function of time. The method further includes calculating an estimated complex electric field temporal profile of the pulse sequence by applying at least one constraint to the inverse Fourier transform.

Abstract translation: 一种方法确定样品的瞬态响应。 该方法包括提供包括探针脉冲和伪脉冲的脉冲序列的复电场时间分布的傅立叶变换的测量幅度，其中探针脉冲表示样品的瞬态响应。 该方法还包括提供脉冲序列的复电场时间分布的傅立叶变换的估计相位项。 该方法还包括乘以测量的幅度和估计的相位项以产生脉冲序列的复电场时间曲线的估计傅立叶变换。 该方法还包括计算傅立叶逆变换的傅立叶逆变换，其中逆傅里叶变换是时间的函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算脉冲序列的估计复电场时间分布。

公开(公告)号：US20070025432A1

公开(公告)日：2007-02-01

申请号：US11130418

申请日：2005-05-16

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: H04B17/00

CPC classification number: G02B6/0208 ,  G01M11/3145 ,  G01M11/3172 ,  G02B2006/02166

Abstract: 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.

Abstract translation: 一种方法确定光纤布拉格光栅的复反射脉冲响应。 该方法包括提供光纤布拉格光栅的复反射光谱的测量幅度。 该方法还包括提供复反射谱的估计相位项。 该方法还包括将测量的幅度和估计的相位项相乘以产生估计的复反射谱。 该方法还包括计算估计的复反射谱的傅立叶逆变换，其中逆傅立叶变换是时间的函数。 该方法还包括通过对估计的复反射光谱的傅里叶逆变换应用至少一个约束来计算估计的复反射脉冲响应。

公开(公告)号：US20060132783A1

公开(公告)日：2006-06-22

申请号：US11355614

申请日：2006-02-16

Applicant: Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

Inventor： Aydogan Ozcan ,  Michel Digonnet ,  Gordon Kino

IPC: G01N21/00

CPC classification number: G01N21/21 ,  G01J11/00 ,  G01N21/4788 ,  G01N21/636 ,  G01N2021/4723 ,  G01N2021/4735

Abstract: A method for measuring a physical function forms a symmetric composite function by combining the physical function with a reference function. The method obtains a Fourier transform of the symmetric composite function. The method calculates an inverse Fourier transform of the obtained Fourier transform, wherein the calculated inverse Fourier transform provides information regarding the physical function. The physical function can be a nonlinearity profile of a sample with at least one sample surface. The physical function can alternatively by a sample temporal waveform of a sample optical pulse.

公开(公告)号：US20080050078A1

公开(公告)日：2008-02-28

申请号：US11828277

申请日：2007-07-25

Applicant: Michel Digonnet ,  Aydogan Ozcan

Inventor： Michel Digonnet ,  Aydogan Ozcan

IPC: G02B6/032

CPC classification number: G02B6/02328 ,  G02B6/02052 ,  G02B6/02304 ,  G02B6/02347 ,  G02B6/02376 ,  G02B6/2552

Abstract: An optical filter and methods of filtering are provided. The optical filter includes a hollow-core fiber including a first portion and a second portion. The first portion includes a hollow core having a first diameter and a cladding having a second diameter. The second portion includes a hollow core having a third diameter smaller than the first diameter and a cladding having a fourth diameter smaller than the second diameter.

Abstract translation: 提供滤光器和滤光器。 滤光器包括中空纤维，其包括第一部分和第二部分。 第一部分包括具有第一直径的中空芯和具有第二直径的包层。 第二部分包括具有小于第一直径的第三直径的中空芯和具有小于第二直径的第四直径的包层。

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。