公开(公告)号：US20180251397A1

公开(公告)日：2018-09-06

申请号：US15886982

申请日：2018-02-02

Applicant: OFS Fitel, LLC

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

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

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 ,  Y02P40/57

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.

公开(公告)号：US20140169748A1

公开(公告)日：2014-06-19

申请号：US14188357

申请日：2014-02-24

Applicant: OFS Fitel, LLC

Inventor： Robert L. Lingle ,  David W. Peckham

IPC: G02B6/036 ,  G02B6/02

CPC classification number: G02B6/02019 ,  G02B6/02009 ,  G02B6/03616 ,  G02B6/03683

Abstract: Certain embodiments of the invention may include optimized trench-assisted ultra large area (ULA) optical fibers. According to an example embodiment of the invention, a trench-assisted optical fiber, optimized for microbend frontier (MBF) performance is provided. The optical fiber includes a core region having a longitudinal axis, a shelf region surrounding said core region, a cladding region surrounding said shelf region, said core and shelf and cladding regions configured to support and guide the propagation of signal light in a fundamental transverse mode in said core and shelf regions in the direction of said axis. The optical fiber further includes a core effective area (Aeff) of between 135 μm2 and about 170 μm2; a relative effective index difference (Neff) of greater than about 0.08%; a loss at 1550 nm of less than 0.180 dB/km; and a microbend frontier (MBF) distance of less than about 90%.

Abstract translation: 本发明的某些实施例可以包括优化的沟槽辅助超大面积（ULA）光纤。 根据本发明的示例性实施例，提供了针对微弯边（MBF）性能优化的沟槽辅助光纤。 光纤包括具有纵向轴线的芯区域，围绕所述芯区域的搁板区域，围绕所述搁板区域的包层区域，所述芯部和搁架以及被配置为支撑和引导基本横向模式的信号光的传播的包层区域 在所述芯部和搁板区域中在所述轴线的方向上。 光纤还包括在135μm2和约170μm2之间的芯有效面积（Aeff）; 相对有效指数差（Neff）大于约0.08％; 在1550nm处的损耗小于0.180dB / km; 和微弯边界（MBF）距离小于约90％。

公开(公告)号：US20170022094A1

公开(公告)日：2017-01-26

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: C03C13/04 ,  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−, 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.

Abstract translation: 根据本发明的另一方面，通过光纤的大部分光学传播由包括芯区域和一个或多个相邻包层区域的所识别的纤维区域组支撑。 纤维区域掺杂有相应量和径向位置中的一种或多种降低粘度的掺杂剂，其被配置为实现所识别的组中的纤维区域之间的粘度匹配。

公开(公告)号：US10259742B2

公开(公告)日：2019-04-16

申请号：US15886982

申请日：2018-02-02

Applicant: OFS Fitel, LLC

Inventor： Man F. Yan ,  Peter I. Borel ,  Tommy Geisler ,  Rasmus V. S. 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 ,  C03B37/018

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.

公开(公告)号：US20160170137A1

公开(公告)日：2016-06-16

申请号：US14938914

申请日：2015-11-12

Applicant: OFS Fitel, LLC

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

IPC: G02B6/036 ,  G02B6/02

CPC classification number: G02B6/0365 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01853 ,  C03B37/01861 ,  C03B37/01869 ,  C03B37/01892 ,  C03B37/027 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/22 ,  C03B2203/222 ,  C03B2203/223 ,  C03B2205/40 ,  C03B2205/42 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2203/44 ,  C03C2203/46 ,  G02B6/02019 ,  G02B6/03683 ,  G02B6/03694 ,  Y02P40/57

Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber). The inclusion of the annular stress accommodation region allows for the formation of a large effective area optical fiber that exhibits low loss (i.e.,

Abstract translation: 光纤的核心区域掺杂有氯，其浓度允许芯区的粘度降低，接近周围包层的粘度。 在芯和包层之间设置环形界面区域，并且包含足以匹配芯的粘度的氟掺杂剂的浓度。 通过包括该环形应力容纳区域，可以形成包层，以包括提供期望程度的光信号限制所需的相对高浓度的氟（即，形成“低损耗”光纤）。 包含环形应力容纳区域允许形成在C波段和L波段传输范围内呈现低损耗（即<0.19dB / km）的大的有效面积光纤。

公开(公告)号：US20150168643A1

公开(公告)日：2015-06-18

申请号：US14575821

申请日：2014-12-18

Applicant: OFS Fitel, LLC

Inventor： Lars Gruner-Nielsen ,  Robert L. Lingle ,  David W. Peckham ,  Yi Sun

IPC: G02B6/028

CPC classification number: G02B6/0288 ,  G02B6/268

Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 or more LP modes for transmission of a spatially-multiplexed optical signal. Undesired modes have respective effective indices that are close to, or less than, the cladding index so as to result in leakage of the undesired modes into the outer cladding. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.

Abstract translation: 描述了具有渐变折射率芯和包围在芯和沟槽之间的凸缘的周围包层，邻接凸缘的下掺杂沟槽和邻接沟槽的未掺杂包层区域的多模光纤。 光纤的折射率分布被配置为支持9个或更多个LP模式以传输空间复用光信号。 不期望的模式具有接近或小于包层指数的相应有效指数，以便导致不期望的模式向外包层的泄漏。 具有最低有效指数的期望模式与具有最高有效指数的泄漏模式之间的指数间隔足够大，以便基本上防止它们之间的耦合。

公开(公告)号：US11161767B2

公开(公告)日：2021-11-02

申请号：US16241329

申请日：2019-01-07

Applicant: OFS Fitel, LLC

Inventor： David W. Peckham ,  Patrick W. Wisk ,  Man F. Yan

IPC: C03B37/014 ,  C03B37/012 ,  C03B37/027

Abstract: An optical preform manufacturing process is disclosed in which an alkali dopant is deposited between an optical fiber core rod and an optical fiber cladding jacket. Depositing the alkali dopant between the core rod and the cladding jacket permits diffusion of the alkali dopants into the core during fiber draw when the core and the cladding are at their respective transition (or vitrification) temperatures. Introduction of the alkali dopants between the core rod and the cladding jacket also permits decoupling of the alkali doping process from one or more of other optical preform manufacturing processes. The optical preform manufacturing process can also include placing alkali dopants between an optical fiber inner cladding jacket and an optical fiber outer cladding jacket to reduce the glass viscosity during fiber draw.

公开(公告)号：US20200024176A1

公开(公告)日：2020-01-23

申请号：US16241329

申请日：2019-01-07

Applicant: OFS Fitel, LLC

Inventor： David W. Peckham ,  Patrick W. Wisk ,  Man F. Yan

IPC: C03B37/014 ,  C03B37/012 ,  C03B37/027

Abstract: An optical preform manufacturing process is disclosed in which an alkali dopant is deposited between an optical fiber core rod and an optical fiber cladding jacket. Depositing the alkali dopant between the core rod and the cladding jacket permits diffusion of the alkali dopants into the core during fiber draw when the core and the cladding are at their respective transition (or vitrification) temperatures. Introduction of the alkali dopants between the core rod and the cladding jacket also permits decoupling of the alkali doping process from one or more of other optical preform manufacturing processes. The optical preform manufacturing process can also include placing alkali dopants between an optical fiber inner cladding jacket and an optical fiber outer cladding jacket to reduce the glass viscosity during fiber draw.

公开(公告)号：US20140064686A1

公开(公告)日：2014-03-06

申请号：US13838981

申请日：2013-03-15

Applicant: OFS FITEL, LLC

Inventor： Gruner-Nielsen Lars ,  Robert L. Lingle ,  David W. Peckham ,  Yi Sun

IPC: G02B6/028

CPC classification number: G02B6/0288

Abstract: The specification describes modified step index and GRaded INdex (GRIN) fibers with low core relative delta (near 0.8%) which have desirable properties for transmission. These lower delta fibers have lower attenuation losses due to reduced Rayleigh scattering, which is desirable to improve performance in multiple mode multiplexing. The fiber designs include optimized raised triangle profiles, and depressed cladding profiles, to support two and four LP modes.

Abstract translation: 该规范描述了具有低核相对δ（接近0.8％）的改进的阶跃折射率和GRaded INdex（GRIN）光纤，其具有期望的传输特性。 由于降低的瑞利散射，这些较低的delta光纤具有较低的衰减损耗，这对于提高多模复用的性能是有利的。 光纤设计包括优化的凸起三角形轮廓和凹陷的覆层轮廓，以支持两个和四个LP模式。

公开(公告)号：US09709731B2

公开(公告)日：2017-07-18

申请号：US14575821

申请日：2014-12-18

Applicant: OFS Fitel, LLC

Inventor： Lars Gruner-Nielsen ,  Robert L. Lingle ,  David W. Peckham ,  Yi Sun

IPC: G02B6/028 ,  G02B6/26

CPC classification number: G02B6/0288 ,  G02B6/268

Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 or more LP modes for transmission of a spatially-multiplexed optical signal. Undesired modes have respective effective indices that are close to, or less than, the cladding index so as to result in leakage of the undesired modes into the outer cladding. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.