公开(公告)号：US5491581A

公开(公告)日：1996-02-13

申请号：US154957

申请日：1993-11-19

Applicant: Giacomo S. Roba

Inventor： Giacomo S. Roba

IPC: G02B6/00 ,  C03B37/018 ,  C03C13/04 ,  G02B6/036 ,  G02F1/35 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/16 ,  H01S3/06

CPC classification number: G02B6/0365 ,  C03B37/01807 ,  C03B37/01838 ,  C03C13/046 ,  G02B6/03644 ,  H01S3/06708 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/22 ,  H01S3/06729 ,  H01S3/094011 ,  H01S3/1691

Abstract: An optical amplifier which includes an optical fiber having an erbium doped core surrounded by cladding, a pump for pumping the fiber with pump light at a pump wavelength coupled to the fiber, input means for inputting a signal to be amplified to the amplifier and output means for outputting an amplified signal from the amplifier. The fiber has a NA higher than 0.2. The difference in the coefficient of thermal expansion of the core adjacent the core/cladding interface and the coefficient of thermal expansion of the cladding at at least one radius less than 2 .mu.m from said interface is lower than a predetermined value, corresponding to a ratio of erbium loss to background loss, at said pump wavelength, and greater than a minimum ratio of about 20 when erbium loss is 0.15 dB/m and about 120 when erbium loss is 3.5 dB/m.

Abstract translation: 一种光放大器，包括具有被包层包围的掺铒芯的光纤，用于以耦合到光纤的泵浦波长的泵浦光泵浦光纤的泵，用于将放大的信号输入到放大器和输出装置的输入装置 用于从放大器输出放大的信号。 纤维的NA高于0.2。 在距离所述界面的小于2μm的至少一个半径处，与芯/包覆界面相邻的芯部的热膨胀系数与包层的热膨胀系数的差异小于预定值， 在铒损耗为0.15dB / m时，铒损耗与背景损耗相比，在铒损耗为3.5dB / m时，大于20左右的最小比。

公开(公告)号：US5033815A

公开(公告)日：1991-07-23

申请号：US523680

申请日：1990-04-27

Applicant: Takao Edahiro ,  Shiro Kurosaki ,  Minoru Watanabe

Inventor： Takao Edahiro ,  Shiro Kurosaki ,  Minoru Watanabe

IPC: C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/44 ,  G02B6/00

CPC classification number: G02B6/4492 ,  C03B37/014 ,  C03B37/018 ,  C03C13/045 ,  C03B2201/02 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2203/22

Abstract: An optical transmission fiber comprising (1) a core of high refractive index composed of SiO.sub.2 -based glass containing at least one of GeO.sub.2, As.sub.2 O.sub.3, Sb.sub.2 O.sub.5, SnO.sub.2, TiO.sub.2, PbO and Bi.sub.2 O.sub.3, (2) a clad of low refractive index composed of SiO.sub.2 -based glass containing at least one of F, F/B.sub.2 O.sub.3 and F/P.sub.2 O.sub.5, and (3) an outermost jacket layer composed of SiO.sub.2 and/or SiO.sub.2 -based glass containing at least one of Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2 and HfO.sub.2.

公开(公告)号：US4830463A

公开(公告)日：1989-05-16

申请号：US153746

申请日：1988-02-08

Applicant: Paul J. Lemaire ,  John B. MacChesney ,  Jay R. Simpson

Inventor： Paul J. Lemaire ,  John B. MacChesney ,  Jay R. Simpson

IPC: G02B6/02 ,  C03B37/018 ,  C03C3/06 ,  C03C13/04 ,  G02B6/10

CPC classification number: G02B6/03611 ,  C03B37/01807 ,  C03C13/04 ,  C03C3/06 ,  G02B6/03627 ,  G02B6/105 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2203/30 ,  C03C2201/28 ,  C03C2201/32 ,  C03C2203/44

Abstract: It has been discovered that fused silica doped with approximately equimolar amounts of Al and P, has advantageous properties that make such co-doped glass useful in a variety of applications, including optical fiber, especially polarization-maintaining optical fiber, and planar waveguides in optical and optoelectronic devices. In particular, such co-doped fused silica can have a refractive index that is lower than, or at least not significantly greater than, that of pure fused silica, even though both Al and P individually are known up-dopants for silica. The co-doped fused silica also can have a relatively low working temperature, while otherwise maintaining many of the desirable properties of fused silica, e.g., chemical inertness and relatively low coefficient of thermal expansion.

公开(公告)号：US4339173A

公开(公告)日：1982-07-13

申请号：US611226

申请日：1975-09-08

Applicant: Ishwar D. Aggarwal ,  Eric N. Randall

Inventor： Ishwar D. Aggarwal ,  Eric N. Randall

IPC: C03B37/018 ,  C03B37/014 ,  C03C3/06 ,  C03C3/062 ,  C03C3/253 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B5/172

CPC classification number: C03C13/048 ,  C03B37/014 ,  C03B37/01413 ,  C03C13/045 ,  C03C13/046 ,  G02B6/02 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/225 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2207/46 ,  C03B2207/50

Abstract: An optical waveguide having a cladding of high purity glass and a core of high purity glass doped with an amount of P.sub.2 O.sub.5 and GeO.sub.2 to increase the refractive index thereof to a predetermined level. The ratio of P.sub.2 O.sub.5 to GeO.sub.2 is such that the softening point temperature of the core is compatible with that of the cladding. The core glass has a cation impurity level not exceeding 10 parts per million.

Abstract translation: 一种光波导，其具有高纯度玻璃的包层和掺杂有量的P 2 O 5和GeO 2的高纯度玻璃芯，以将其折射率增加到预定水平。 P 2 O 5与GeO 2的比例使得芯的软化点温度与包层的软化点温度相容。 核心玻璃的阳离子杂质含量不超过百万分之十。

公开(公告)号：US4125388A

公开(公告)日：1978-11-14

申请号：US877514

申请日：1978-02-13

Applicant: Dale R. Powers

Inventor： Dale R. Powers

IPC: C03B32/00 ,  C03B37/014 ,  C03B37/02

CPC classification number: C03B37/01446 ,  C03B32/00 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42 ,  Y10S65/90

Abstract: A method of making low loss glass optical waveguides, wherein at least one coating of glass soot is deposited by the flame hydrolysis process on a starting member. The starting member is removed from the coating material or glass soot preform leaving an aperture therein, and a tube is secured to one end of the preform. While the preform is heated to its consolidation termperature, an atmosphere including a drying agent flows from the tube into the aperture and through the porous preform, thereby removing water from the preform while the soot is consolidated to form a dense glass article. The tube can be removed, and the resultant dense glass article can be drawn into an optical waveguide fiber.

Abstract translation: 一种制造低损耗玻璃光波导的方法，其中玻璃烟灰的至少一个涂层通过火焰水解过程沉积在起始构件上。 起始构件从涂层材料或玻璃烟炱预制件中移除，在其中留下孔，并且管固定到预成型件的一端。 当将预成型件加热至其固化温度时，包括干燥剂的气氛从管流入孔并通过多孔预型件，从而从烟炱中除去水，同时烟炱被固结形成致密的玻璃制品。 可以除去管，并将所得的致密玻璃制品拉入光波导纤维中。

公开(公告)号：US20230305222A1

公开(公告)日：2023-09-28

申请号：US18320911

申请日：2023-05-19

Applicant: NKT Photonics A/S

Inventor： Jens LYNGSØ ,  Cameron SMITH ,  Anders HARPØTH ,  Christian JAKOBSEN ,  Thomas Tanggard ALKESKJOLD ,  Irnis KUBAT

IPC: G02B6/02 ,  G02F1/365

CPC classification number: G02B6/02338 ,  G02B6/02342 ,  G02F1/365 ,  C03B2201/12 ,  C03B2201/22 ,  C03B2201/28 ,  C03B2201/32 ,  G02F1/3528

Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.

公开(公告)号：US11698484B2

公开(公告)日：2023-07-11

申请号：US16632932

申请日：2018-07-24

Applicant: NKT Photonics A/S

Inventor： Jens Lyngsø ,  Cameron Smith ,  Anders Harpøth ,  Christian Jakobsen ,  Thomas Tanggard Alkeskjold ,  Imis Kubat

IPC: G02B6/02 ,  G02F1/365 ,  G02F1/35

CPC classification number: G02B6/02338 ,  G02B6/02342 ,  G02F1/365 ,  C03B2201/12 ,  C03B2201/22 ,  C03B2201/28 ,  C03B2201/32 ,  G02F1/3528

Abstract: A supercontinuum source, comprises a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator comprising a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.

公开(公告)号：US11667558B2

公开(公告)日：2023-06-06

申请号：US16740903

申请日：2020-01-13

Applicant: CORNING INCORPORATED

Inventor： Laura Beth Cook ,  Curtis Robert Fekety ,  Yunfeng Gu ,  Dale Robert Powers ,  Christopher Scott Thomas ,  Srinivas Vemury ,  Fei Xia ,  Chunfeng Zhou

IPC: C03B19/14 ,  C03B37/018 ,  C03B37/014 ,  C03C13/04 ,  C03C3/06 ,  C03B37/012

CPC classification number: C03B37/01815 ,  C03B19/1407 ,  C03B19/1423 ,  C03B37/0142 ,  C03B37/01282 ,  C03B37/01406 ,  C03C3/06 ,  C03C13/045 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2207/20 ,  C03B2207/36 ,  C03B2207/50 ,  C03C2203/40

Abstract: A method of producing bi-modal particles includes the steps of igniting a first precursor gas using a primary burner thereby producing a first plurality of particles of a first size, fluidly transporting the first plurality of particles down a particle tube, igniting a second precursor gas using a secondary burner thereby producing a second plurality of particles of a second size, flowing the second plurality of particles into the first plurality of particles, and capturing the first and second plurality of particles.

公开(公告)号：US20180095219A1

公开(公告)日：2018-04-05

申请号：US15714122

申请日：2017-09-25

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Ming-Jun Li ,  Pushkar Tandon

IPC: G02B6/028 ,  G02B6/02 ,  G02B6/036

CPC classification number: G02B6/0286 ,  C03B37/014 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/36 ,  C03B2201/42 ,  C03B2203/22 ,  C03B2203/24 ,  C03C3/06 ,  C03C2201/02 ,  C03C2201/08 ,  G02B6/02004 ,  G02B6/02009 ,  G02B6/02319 ,  G02B6/02395 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03616 ,  G02B6/03627 ,  G02B6/0365 ,  G02B6/03694

Abstract: According to embodiments, an optical fiber may include a core portion comprising an outer radius rC and a maximum relative refractive index ΔCmax. A cladding may surround the core portion and include a low-index trench and an outer cladding. The low index trench may surround the core portion and includes an outer radius rT and relative refractive index ΔT. The outer cladding may surround and be in direct contact with the low-index trench. The outer cladding may be formed from silica-based glass comprising greater than 1.0 wt. % bromine and has a relative refractive index ΔOC, wherein Δcmas>ΔOC>ΔT. The optical fiber may have a cable cutoff of less than or equal to 1530 nm. An attenuation of the optical fiber may be less than or equal to 0.185 dB/km at a wavelength of 1550 nm.

公开(公告)号：US09919955B2

公开(公告)日：2018-03-20

申请号：US15086169

申请日：2016-03-31

Applicant: OFS Fitel, LLC

Inventor： Man F Yan ,  Peter I Borel ,  Tommy Geisler ,  Rasmus V Jensen ,  Ole A Levring ,  Jorgen Ostgaard Olsen ,  David W Peckham ,  Dennis J Trevor ,  Patrick W Wisk ,  Benyuan Zhu

IPC: G02B6/36 ,  C03C13/04 ,  C03B37/012 ,  C03C3/06 ,  C03C4/10 ,  C03B37/027 ,  G02B6/036

CPC classification number: C03C13/046 ,  C03B37/01208 ,  C03B37/01853 ,  C03B37/027 ,  C03B2201/07 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/50 ,  C03B2203/223 ,  C03B2203/23 ,  C03C3/06 ,  C03C4/10 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/28 ,  C03C2201/50 ,  G02B6/03627 ,  G02B6/0365

Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm−1, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius.According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions. The fiber regions are doped with one or more viscosity-reducing dopants in respective amounts and radial positions that are configured to achieve viscosity matching among the fiber regions in the identified group.