公开(公告)号：US09873629B2

公开(公告)日：2018-01-23

申请号：US13173777

申请日：2011-06-30

Applicant: Steven Bruce Dawes ,  Robert A Knowlton ,  Pushkar Tandon ,  Ji Wang

Inventor： Steven Bruce Dawes ,  Robert A Knowlton ,  Pushkar Tandon ,  Ji Wang

IPC: C03B37/018 ,  C03B37/012 ,  C03B37/014

CPC classification number: C03B37/01211 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01466 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/36 ,  C03B2207/66 ,  C03B2207/70

Abstract: Methods for forming optical fiber preforms with low-index trenches are disclosed. According to one embodiment, the method includes depositing silica-based glass soot on a bait rod to form a low-index trench region of the optical fiber preform. The silica-based glass soot is deposited such that the low-index trench region has a first density. Thereafter a barrier layer having a second density greater than the first density is formed around the low-index trench region. Therafter, an overclad region is deposited around the barrier layer. The bait rod is then removed from a central channel of the trench-overclad assembly. A separate core assembly is inserted into the central channel. A down-dopant gas is then directed through the central channel of the trench-overclad assembly as the trench-overclad assembly is heated to dope the low-index trench region. The barrier layer prevents diffusion of the down-dopant from the low-index trench region into the overclad region.

公开(公告)号：USRE44288E1

公开(公告)日：2013-06-11

申请号：US12511311

申请日：2009-07-29

Applicant: Ronald L. Kimball ,  Robert A. Knowlton ,  Joseph E. McCarthy ,  Ji Wang ,  Donnell T. Walton ,  Luis A. Zenteno

Inventor： Ronald L. Kimball ,  Robert A. Knowlton ,  Joseph E. McCarthy ,  Ji Wang ,  Donnell T. Walton ,  Luis A. Zenteno

IPC: G02B6/00 ,  G02B6/02

CPC classification number: C03B37/01413 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/04 ,  C03B2203/10 ,  C03B2203/23 ,  C03B2203/30 ,  C03B2207/85 ,  C03B2207/90 ,  C03C13/046 ,  G02B6/024 ,  G02B6/03611 ,  G02B6/0365 ,  G02B6/03694 ,  H01S3/06716 ,  H01S3/1618

Abstract: According to one example of the invention an optical fiber comprises: (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; wherein at least one of the core or cladding is doped with Al2O3, such that the ratio of max wt % to min wt % of Al2O3 concentration is less than 2:1.

Abstract translation: 根据本发明的一个示例，光纤包括：（i）具有第一折射率n1的二氧化硅基稀土掺杂的核; （ii）至少一个围绕所述芯并且具有第二折射率n2的基于二氧化硅的包层，使得n1> n2; 其中所述芯或包层中的至少一个掺杂有Al 2 O 3，使得最大wt％与Al 2 O 3浓度的最小重量％的比率小于2:1。

公开(公告)号：US07313312B2

公开(公告)日：2007-12-25

申请号：US11056870

申请日：2005-02-11

Applicant: Ronald L. Kimball ,  Robert A Knowlton ,  Joseph E McCarthy ,  Ji Wang ,  Donnell T. Walton ,  Luis A. Zenteno

Inventor： Ronald L. Kimball ,  Robert A Knowlton ,  Joseph E McCarthy ,  Ji Wang ,  Donnell T. Walton ,  Luis A. Zenteno

IPC: G02B6/00

CPC classification number: C03B37/01413 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/04 ,  C03B2203/10 ,  C03B2203/23 ,  C03B2203/30 ,  C03B2207/85 ,  C03B2207/90 ,  C03C13/046 ,  G02B6/024 ,  G02B6/03611 ,  G02B6/0365 ,  G02B6/03694 ,  H01S3/06716 ,  H01S3/1618

Abstract: According to one example of the invention an optical fiber comprises: (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; wherein at least one of the core or cladding is doped with Al2O3, such that the ratio of max wt % to min wt % of Al2O3 concentration is less than 2:1.

Abstract translation: 根据本发明的一个示例，光纤包括：（i）具有第一折射率n 1的二氧化硅基稀土掺杂的核; （ii）至少一个二氧化硅基包层，其围绕所述芯并具有第二折射率n 2 2，使得n 1/2 2 n 2 ; 其中所述芯或包层中的至少一个掺杂有Al 2 O 3 3，使得Al 2 O 3的最大重量％与最小重量％的比例< / 3 3 3浓度小于2:1。

公开(公告)号：US20130000840A1

公开(公告)日：2013-01-03

申请号：US13173777

申请日：2011-06-30

Applicant: Steven Bruce Dawes ,  Robert A. Knowlton ,  Pushkar Tandon ,  Ji Wang

Inventor： Steven Bruce Dawes ,  Robert A. Knowlton ,  Pushkar Tandon ,  Ji Wang

IPC: B32B37/00

CPC classification number: C03B37/01211 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01466 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/36 ,  C03B2207/66 ,  C03B2207/70

Abstract: Methods for forming optical fiber preforms with low-index trenches are disclosed. According to one embodiment, the method includes depositing silica-based glass soot on a bait rod to form a low-index trench region of the optical fiber preform. The silica-based glass soot is deposited such that the low-index trench region has a first density. Thereafter a barrier layer having a second density greater than the first density is formed around the low-index trench region. Therafter, an overclad region is deposited around the barrier layer. The bait rod is then removed from a central channel of the trench-overclad assembly. A separate core assembly is inserted into the central channel. A down-dopant gas is then directed through the central channel of the trench-overclad assembly as the trench-overclad assembly is heated to dope the low-index trench region. The barrier layer prevents diffusion of the down-dopant from the low-index trench region into the overclad region.

Abstract translation: 公开了用于形成具有低折射率沟槽的光纤预制棒的方法。 根据一个实施方案，该方法包括在诱饵棒上沉积二氧化硅基玻璃烟炱以形成光纤预制棒的低折射率沟槽区域。 沉积二氧化硅基玻璃烟炱，使得低折射率沟槽区域具有第一密度。 此后，在低折射率沟槽区域周围形成具有大于第一密度的第二密度的阻挡层。 Therafter，一个外包层区域沉积在阻挡层周围。 然后将诱饵棒从沟槽外包装组件的中心通道移除。 单独的芯组件插入中心通道。 然后，随着沟槽外包层组件被加热以掺杂低折射率沟槽区域，下掺杂剂气体被引导通过沟槽外包层组件的中心通道。 阻挡层防止下掺杂剂从低折射率沟槽区域扩散到外包层区域中。