公开(公告)号：US20190004245A1

公开(公告)日：2019-01-03

申请号：US16124775

申请日：2018-09-07

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC: G02B6/028 ,  C03B37/014 ,  C03B37/018 ,  G02B6/02 ,  G02B6/036 ,  C03B37/025

Abstract: An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US10094973B2

公开(公告)日：2018-10-09

申请号：US15193860

申请日：2016-06-27

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Kevin Alton Lewis ,  Snigdharaj Kumar Mishra ,  Manuela Ocampo ,  Joan Diana Patterson

IPC: G02B6/36 ,  G02B6/02 ,  C03C25/1065 ,  G02B6/036 ,  C03C25/285 ,  C03C25/326 ,  G02B6/028

Abstract: Optical fibers having a mode field diameter at 1310 nm of at least 8.8 μm, wire mesh covered drum microbending losses at 1550 nm less than 0.03 dB/km, and a 2 m cutoff wavelength less than 1320 nm. The fibers may include a central core region, an inner cladding region, an outer cladding region, a primary coating with an in situ modulus less than 0.20 MPa and glass transition temperature less than −35° C., and a secondary coating with an in situ modulus greater than 1500 MPa. The fibers may further include a depressed index cladding region. The relative refractive index of the central core region may be greater than the relative refractive index of the outer cladding region may be greater than the relative refractive index of the inner cladding region. The fibers may be produced at draw speeds of 30 m/s or greater.

公开(公告)号：US20180079677A1

公开(公告)日：2018-03-22

申请号：US15702961

申请日：2017-09-13

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC: C03B37/014 ,  C03B37/018 ,  G02B6/036 ,  G02B6/028 ,  G02B6/02

CPC classification number: G02B6/0286 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01466 ,  C03B37/018 ,  C03B37/025 ,  C03B2201/08 ,  C03B2201/20 ,  C03B2207/70 ,  G02B6/02214 ,  G02B6/0283 ,  G02B6/03627 ,  G02B6/03644

Abstract: An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US20180067256A1

公开(公告)日：2018-03-08

申请号：US15812560

申请日：2017-11-14

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

IPC: G02B6/036 ,  G02B6/02

CPC classification number: G02B6/03672 ,  G02B6/02009 ,  G02B6/02014 ,  G02B6/02395 ,  G02B6/0365

Abstract: Disclosed herein are optical waveguide fibers comprising: (I) a core comprising an outer radius r1, a maximum refractive index delta percent Δ1 max and core alpha, α, of larger than 5; and (II) a cladding surrounding the core, the cladding comprising: (i) an inner cladding region having outer radius r2 and refractive index delta percent Δ2, wherein Δ1max>Δ2; (ii) a trench region surrounding the inner cladding region, the trench region having an outer radius, r3 where r3≧10 microns and refractive index delta percent Δ3; and (iii) an outer cladding region having chlorine concentration of ≧1.2 wt. % surrounding the trench region and comprising refractive index delta percent Δt, wherein Δ1max>Δ4 and Δ2>Δ3, and Δ4>Δ3 and wherein the difference between Δ4 and Δ3 is ≧0.12 percent.

公开(公告)号：US09874686B2

公开(公告)日：2018-01-23

申请号：US15166772

申请日：2016-05-27

Applicant: Corning Incorporated

Inventor： Snigdharaj Kumar Mishra ,  Michal Mlejnek ,  James Andrew West ,  William Allen Wood ,  Aramais Robert Zakharian

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

CPC classification number: G02B6/03655 ,  G02B6/02019 ,  G02B6/02395 ,  G02B6/0281 ,  G02B6/03683

Abstract: An optical fiber comprising: (i) a core comprising silica and having a maximum relative refractive index delta Δ1MAX; and LP01 effective area >100 μm2 at 1550 nm; (ii) an inner cladding surrounding the core and having a minimum relative refractive index delta Δ2MIN and ΔcoreMAX>Δ2MIN; (iii) an outer cladding surrounding the inner cladding and comprising a first outer cladding portion with a maximum refractive index Δ3A such that Δ3A>Δ2MIN; and another outer cladding portion surrounding the first outer cladding portion with a maximum refractive index delta Δ3B wherein with a maximum refractive index delta Δ3B wherein Δ3B>Δ3A, said another portion being the outermost portion of the outer cladding; and (iv) a coating layer surrounding the outer cladding, and in contact with said another outer cladding portion, the coating layer having a relative refractive index delta ΔC wherein ΔC>Δ3B.

公开(公告)号：US20160091660A1

公开(公告)日：2016-03-31

申请号：US14862648

申请日：2015-09-23

Applicant: Corning Incorporated

Inventor： Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Michal Mlejnek ,  William Allen Wood ,  Aramais Robert Zakharian

IPC: G02B6/02 ,  H04B10/2543 ,  H04B10/2581 ,  G02B6/028 ,  G02B6/036

CPC classification number: G02B6/02019 ,  C03B2201/12 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  G02B6/02023 ,  G02B6/02309 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03622 ,  G02B6/03638 ,  G02B6/0365 ,  H04B10/2543 ,  H04B10/2581

Abstract: A quasi-single-mode optical fiber with a large effective area is disclosed. The quasi-single-mode fiber has a core with a radius greater than 5 μm, and a cladding section configured to support a fundamental mode and a higher-order mode. The fundamental mode has an effective area greater than 170 μm2 and an attenuation of no greater than 0.17 dB/km at a wavelength of 1530 nm. The higher-order mode has an attenuation of at least 1.0 dB/km at the wavelength of 1530 nm. The quasi-single-mode optical fiber has a bending loss of less than 0.02 dB/turn for a bend diameter of 60 mm for a wavelength of 1625 nm.

Abstract translation: 公开了一种具有大面积有效面积的准单模光纤。 准单模光纤具有半径大于5μm的芯和被配置为支持基模和高阶模的包层部。 基本模式的有效面积大于170μm2，在1530nm波长处的衰减不大于0.17dB / km。 高阶模式在1530nm的波长处具有至少1.0dB / km的衰减。 准单模光纤对于波长为1625nm的弯曲直径为60mm，具有小于0.02dB /转的弯曲损耗。

公开(公告)号：US20150225280A1

公开(公告)日：2015-08-13

申请号：US14467369

申请日：2014-08-25

Applicant: Corning Incorporated

Inventor： Brian Lee Harper ,  Rostislav Radiyevich Khrapko ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC: C03B37/014

CPC classification number: C03B37/01446 ,  C03B37/014 ,  C03B37/01453 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/20

Abstract: One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ρ to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ρ ρ s - ρ )  0.209748  T dop  Exp  [ - 5435.33 / T dop ] y SiCl   4 3 / 4 ] and ρs is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.

Abstract translation: 本公开的一个实施方案涉及一种制造光纤的方法，包括以下步骤：（i）将二氧化硅基预型体暴露于具有烟炱密度的至少一个多孔玻璃区域; 在掺杂温度Tdop下将SiCl 4的SiCl 4摩尔分数为ySiCl4的气体混合物混合，使得参数X大于0.03以形成经氯处理的预制件，其中X = 11 + [（＆rgr; s - ＆rgr;））0.209748 [... 5435.33 / T dop] y SiCl 4 3/4]和＆rgr; s是完全致密的烟灰层的密度; 和（ii）将氯处理的预制件暴露于高于1400℃的温度下，以完全烧结预成型件，以制备具有氯掺杂区域的烧结光纤预制件; 和（iii）从烧结的光学预型件拉制光纤。