公开(公告)号：US20050244118A1

公开(公告)日：2005-11-03

申请号：US10837861

申请日：2004-05-03

Applicant: George Berkey ,  Xin Chen

Inventor： George Berkey ,  Xin Chen

IPC: G02B6/024 ,  G02B6/036 ,  G02B6/17

CPC classification number: G02B6/03627 ,  G02B6/024 ,  G02B6/0281 ,  G02B6/03694

Abstract: Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an outer dimension (d), and a cladding (50) surrounding the moat (40), the cladding (50) having a third refractive index (n3), wherein n1>n3>n2, a ratio of b/a is between 1.5 and 5.0, and a ratio of d/a is between 2.0 and 7.0. The fiber supports a single (one and only one) polarization within a Single Polarization Band (SPB). The fiber (20) may be coupled to optical components in apparatus where single polarization properties are desired.

Abstract translation: 公开了一种光纤（20），其具有具有短尺寸（a），长尺寸（b）和第一折射率（n <1> 1）的中心横向细长芯部（30）， 围绕中央横向细长的芯的护城河（40），护城河（40）具有第二折射率（n 2/2），外部尺寸（c）和外部尺寸（d），以及 围绕护城河（40）的包层（50），包层（50）具有第三折射率（n 3/3），其中n 1 n 3 < / SUB >> n 2，b / a的比例在1.5和5.0之间，d / a的比率在2.0和7.0之间。 光纤支持在单极化带（SPB）内的单一（仅一个）极化。 纤维（20）可以耦合到需要单极化性质的设备中的光学部件。

公开(公告)号：US06920270B2

公开(公告)日：2005-07-19

申请号：US10312913

申请日：2001-06-27

Applicant: Andrea Galtarossa ,  Anna Pizzinat ,  Luca Palmieri

Inventor： Andrea Galtarossa ,  Anna Pizzinat ,  Luca Palmieri

IPC: C03B37/027 ,  C03B37/03 ,  G02B6/10 ,  G02B6/17 ,  C03B37/02

CPC classification number: G02B6/02285 ,  C03B37/027 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/105

Abstract: A method for determining at least one parameter of a periodic spin function α(z) with period p, to be applied to an optical fiber along its length z during a drawing process. At least one parameter is selected so that (I) where ε1 is about 0.05 and y1 is the first of the three components y1(z), y2(z), y3(z) of a periodic function y(z) of period p such that (II) where LB is an expected beat length of said optical fiber and α(z) is the derivative of the spin function α(z) with respect to the length z. The method is effective for substantially reducing the PMD of optical fibers drawn when applying a spin function.

Abstract translation: 一种确定周期性p的周期性自旋函数α（z）的至少一个参数的方法，其在拉伸过程中沿其长度z施加到光纤上。 选择至少一个参数，使得（1）其中ε1 = 0.05和y 1是三个组分y 1中的第一个， （z）的周期函数y（z）的（z），y2（z），y3（z），使得（II）其中L < B 是所述光纤的预期拍子长度，并且α（z）是自旋函数α（z）相对于长度z的导数。 该方法对于大幅减少施加自旋功能时所拉伸的光纤的PMD是有效的。

公开(公告)号：US20050008311A1

公开(公告)日：2005-01-13

申请号：US10910924

申请日：2004-08-03

Applicant: Julia Farroni ,  Upendra Manyam ,  Kanishka Tankala

Inventor： Julia Farroni ,  Upendra Manyam ,  Kanishka Tankala

IPC: C03B37/012 ,  G02B6/024 ,  G02B6/036 ,  G02B6/17

CPC classification number: C03B37/01217 ,  C03B2201/34 ,  C03B2203/23 ,  C03B2203/302 ,  C03B2203/31 ,  G02B6/024 ,  G02B6/03622 ,  G02B6/03694 ,  Y02P40/57

Abstract: A polarization maintaining optical fiber has a core extending along a longitudinal axis, where the core includes a rare earth and a first index of refraction. A cladding is disposed about the core and has a first thermal coefficient of expansion (TCE) and a second index of refraction that is less than the first index of refraction. The fiber can include a pair of longitudinally extending members, and each of the members can have a TCE that is different than the first TCE of the cladding. The pair can be spaced apart by a distance di. A second cladding can be disposed about the first cladding, and the second cladding can have a third index of refraction that is less than the second index of refraction. The fiber can have a fundamental mode having a mode field diameter (MFD). The core can be a multimode core having a diameter dc that is greater than or equal to 15 microns, the numerical aperture of the core relative to the first cladding can be less than or equal to 0.12, the ratio di/MFD can be greater than 3, and the fiber can provide a beat length of less than 3 mm, where the beat length is measured at a wavelength of 633 nm.

Abstract translation: 偏振保持光纤具有沿纵轴延伸的芯，其中芯包括稀土和第一折射率。 包层设置在芯周围，并且具有小于第一折射率的第一热膨胀系数（TCE）和第二折射率。 纤维可以包括一对纵向延伸的构件，并且每个构件可以具有与包层的第一TCE不同的TCE。 该对可以间隔距离di。 可以围绕第一包层设置第二包层，并且第二包层可以具有小于第二折射率的第三折射率。 光纤可以具有模场直径（MFD）的基模。 芯可以是具有大于或等于15微米的直径dc的多模芯，芯相对于第一包层的数值孔径可以小于或等于0.12，di / MFD的比可以大于 3，并且纤维可以提供小于3mm的拍子长度，其中在633nm的波长处测量拍子长度。

公开(公告)号：US5471546A

公开(公告)日：1995-11-28

申请号：US354809

申请日：1994-12-13

Applicant: Markus Meier

Inventor： Markus Meier

IPC: G01C19/72 ,  G01D5/353 ,  G01N21/21 ,  G01N21/41 ,  G01R15/24 ,  G01C19/64 ,  G02B6/17

CPC classification number: G01R15/246 ,  G01D5/344 ,  G01D5/35351

Abstract: Fiber-optic sensors are used in reflection or transmission operation in almost all fields of measuring technology, inter alia for monitoring industrial installations, in medical diagnostics and in aerospace. In this context, the effects of mechanical, electrical, magnetic, acoustic, thermal and chemical signals are evaluated. In order to make possible a simpler signal evaluation, laser light from a light source is coupled into a feed line optical fiber parallel to one of its two principal axes. At a 1st splice point, the light is introduced into a 1st reference optical fiber, whose principal axes are rotated with respect to those of the feed line optical fiber by 45.degree.. At a 2nd splice point, the light reaches a 2nd reference optical fiber of the same length as the 1st reference optical fiber and with its principal axes rotated with reference to the 1st reference optical fiber by 90.degree.. At a 3rd splice point, the light is coupled into a low-birefringent optical fiber, which firstly forms a .lambda./4-fiber-optic loop and subsequently forms an optical sensor. By means of a phase modulator (M) in conjunction with the 1st reference optical fiber, the phase shift of the light can be influenced statically or dynamically.

Abstract translation: 光纤传感器几乎用于测量技术的各个领域，用于反射或传输操作，特别是用于监测工业设备，医疗诊断和航空航天。 在这方面，评估了机械，电，磁，声，热和化学信号的影响。 为了使得更简单的信号评估成为可能，来自光源的激光被耦合到平行于其两个主轴之一的馈线光纤中。 在第一个拼接点，将光引入第一个参考光纤，其主轴相对于馈线光纤旋转45度。 在第二个接合点处，光到达与第一个参考光纤相同长度的第二个参考光纤，其主轴相对于第一个参考光纤旋转90°。 在第三拼接点，光被耦合到低双折射光纤中，其首先形成λ/ 4光纤环路并随后形成光学传感器。 通过与第一参考光纤结合的相位调制器（M），可以静态地或动态地影响光的相移。

公开(公告)号：US07068896B1

公开(公告)日：2006-06-27

申请号：US10360303

申请日：2003-02-07

Applicant: William L. Kath ,  Gino Biondini ,  Sarah L. Fogal

Inventor： William L. Kath ,  Gino Biondini ,  Sarah L. Fogal

IPC: G02B6/00 ,  G02B6/17 ,  H04J14/06

CPC classification number: G02B6/278 ,  G02B6/14 ,  G02B6/2713

Abstract: A method and a system to produce, either in numerical simulations or in experiments, specified amounts of first, second and higher order PMD in a controlled manner, in particular large amounts. Parameters can be adjusted to obtain specific ranges of first, second and higher order PMD, and importance sampling can be used to determine the probability that the resulting PMD events can be obtained in realistic situations. Individual results obtained using specific parameter values can be combined to produce even larger ranges of PMD.

公开(公告)号：US6148131A

公开(公告)日：2000-11-14

申请号：US183483

申请日：1998-10-30

Applicant: Robert E. M. Geertman

Inventor： Robert E. M. Geertman

IPC: G02B6/02 ,  C03B37/027 ,  C03B37/03 ,  G02B6/00 ,  G02B6/17

CPC classification number: G02B6/02285 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/06 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/03622

Abstract: A method of manufacturing an optical fiber, whereby a fiber is drawn from a molten extremity of a preform and is subsequently subjected to a torque, thereby causing a portion of the fiber to be twisted about its longitudinal axis and to be endowed with a spin. The torque is applied by running the fiber between a pair of wheels which rotate in mutually opposite senses about two different rotational axes, each wheel having a peripheral curved surface, the wheels being thus arranged that the fiber runs substantially tangential to their curved surfaces and is pressed therebetween, the wheels being moved back and forth relative to one another in a direction substantially perpendicular to the fiber so as to cause the fiber to be rolled back and forth between their curved surfaces.

Abstract translation: 一种制造光纤的方法，由此纤维从预成型件的熔融末端拉出，并随后受到扭矩，从而使纤维的一部分围绕其纵向轴线扭转并且被旋转赋予。 扭矩通过将纤维运行在一对轮子之间，所述一对轮子以相互反向的感测旋转两个不同的旋转轴线，每个车轮具有外围弯曲表面，因此轮子布置成使得纤维基本上与其弯曲表面相切地延伸，并且是 按压它们，轮子在基本上垂直于纤维的方向上相对于彼此前后移动，以使纤维在它们的曲面之间来回滚动。

公开(公告)号：US5386484A

公开(公告)日：1995-01-31

申请号：US118809

申请日：1993-09-09

Applicant: Akihiro Ooka ,  Kenji Kawamura ,  Yozo Nishiura ,  Katsuaki Itoh ,  Takaki Iwashita ,  Yasuhiko Nishi ,  Noritaka Kuroda ,  Hayato Hasegawa

Inventor： Akihiro Ooka ,  Kenji Kawamura ,  Yozo Nishiura ,  Katsuaki Itoh ,  Takaki Iwashita ,  Yasuhiko Nishi ,  Noritaka Kuroda ,  Hayato Hasegawa

IPC: G01C19/72 ,  G02B6/10 ,  G02B6/34 ,  G02B6/44 ,  G02B6/17

CPC classification number: G02B6/274 ,  G01C19/722 ,  G02B6/105 ,  G02B6/276 ,  G02B6/4457

Abstract: An optical fiber type polarizer comprises a first optical fiber constituted by a birefringent optical fiber wound at a predetermined winding radius and having winding start and end fixed to each other by an adhesive, the first optical fiber having short extra portions respectively extending from the winding start and end, and the length of each of the short extra porions being at least as small as the predetermined winding radius. The optical fiber type polarizer further comprises a second optical fiber spliced to one of the short extra portions of the first optical fiber, and a third optical fiber spliced to the other of the short extra portions of the first optical fiber.

Abstract translation: 一种光纤型偏振器包括：由双折射光纤构成的第一光纤，该双折射光纤以预定的绕组半径缠绕并且具有通过粘合剂彼此固定的卷绕开始和端部，所述第一光纤具有分别从卷绕开始延伸的多个额外部分 并且结束，并且每个短的额外部分的长度至少与预定的绕组半径一样小。 光纤型偏振器还包括接合到第一光纤的短额外部分之一的第二光纤，以及与第一光纤的短额外部分中的另一个接合的第三光纤。

公开(公告)号：US07489846B2

公开(公告)日：2009-02-10

申请号：US10799020

申请日：2004-03-11

Applicant: Annette Grot ,  Kai-Cheung Chow ,  Laura Wills Mirkarimi ,  Mihail M. Sigalas

Inventor： Annette Grot ,  Kai-Cheung Chow ,  Laura Wills Mirkarimi ,  Mihail M. Sigalas

IPC: G02B6/17

CPC classification number: G02B6/1225 ,  B82Y20/00 ,  G01B11/0625

Abstract: Photonic crystal sensors may be created from two and three dimensional photonic crystals by introducing defects. The localization of the optical field in the defect region affords the ability to sense small volumes of analyte.

Abstract translation: 光子晶体传感器可以通过引入缺陷从二维和三维光子晶体产生。 缺陷区域中的光场的定位提供了感测小体积分析物的能力。

公开(公告)号：US07289708B2

公开(公告)日：2007-10-30

申请号：US11474696

申请日：2006-06-26

Applicant: William L. Kath ,  Gino Biondini ,  Sarah L. Fogal

Inventor： William L. Kath ,  Gino Biondini ,  Sarah L. Fogal

IPC: G02B6/00 ,  G02B6/17 ,  H04J14/06

CPC classification number: G02B6/278 ,  G02B6/14 ,  G02B6/2713

Abstract: A method and a system to produce, either in numerical simulations or in experiments, specified amounts of first, second and higher order PMD in a controlled manner, in particular large amounts. Parameters can be adjusted to obtain specific ranges of first, second and higher order PMD, and importance sampling can be used to determine the probability that the resulting PMD events can be obtained in realistic situations. Individual results obtained using specific parameter values can be combined to produce even larger ranges of PMD.

Abstract translation: 无论是在数值模拟还是在实验中，以受控方式特别是大量地产生指定量的第一，第二和更高阶PMD的方法和系统。 可以调整参数以获得第一，第二和更高阶PMD的特定范围，并且可以使用重要性采样来确定在现实情况下可以获得所得PMD事件的概率。 可以组合使用特定参数值获得的个别结果，以产生更大范围的PMD。

公开(公告)号：US20050031280A1

公开(公告)日：2005-02-10

申请号：US10937495

申请日：2004-09-10

Applicant: Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

Inventor： Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

IPC: G02B6/024 ,  G02B6/10 ,  H01S3/06 ,  G02B6/17

CPC classification number: G02B6/024 ,  G02B6/105

Abstract: A polarization-maintaining optical fiber which exhibits an excellent polarization-maintaining performance and significantly low splice loss when spliced with a polarization-maintaining optical fiber having a cladding 125 μm in diameter even if the polarization-maintaining optical fiber has a small-diameter cladding of about 80 μm. The polarization-maintaining optical fiber includes a core, a pair of stress-applying parts provided radially outwardly with respect to the core, and a cladding which surrounds the core and the stress-applying parts. With a diameter D of the stress-applying parts between 21 μm and 32 μm, a distance R between the stress-applying parts between 6 μm and 17 μm, and a relative refractive index difference Δ between 0.3% to 0.5%, a sufficiently large mode field diameter (MFD) is obtained; thus splice loss can be reduced.

Abstract translation: 一种偏振保持光纤，其具有优异的偏振保持性能，并且即使在保偏光纤具有小直径包层的情况下，也具有直径为直径为100μm的具有包层直径为直径为100μm的保偏光纤 约80妈 偏振保持光纤包括芯，相对于芯径向向外设置的一对应力施加部以及围绕芯和应力施加部的包层。 应力施加部分的直径D在21μm和32μm之间，应力施加部分之间的距离R在6μm和17μm之间，相对折射率差值差值在0.3％至0.5％之间，足够大 获得模场直径（MFD）; 因此可以减少接头损耗。