公开(公告)号：US10197728B2

公开(公告)日：2019-02-05

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: G02B6/02 ,  G02B6/036 ,  C03B37/027 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04

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.,

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.

公开(公告)号：US09658395B2

公开(公告)日：2017-05-23

申请号：US14825297

申请日：2015-08-13

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 ,  C03B37/027 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  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).

公开(公告)号：US09036998B2

公开(公告)日：2015-05-19

申请号：US13968601

申请日：2013-08-16

Applicant: OFS Fitel, LLC

Inventor： Ole A Levring

IPC: H04B10/12 ,  G02B6/02 ,  H04B10/2507 ,  H04B10/2525 ,  G02B6/036

CPC classification number: G02B6/0228 ,  G02B6/03666 ,  H04B10/2507 ,  H04B10/25253

Abstract: An undersea long-haul transmission system includes an optical fiber transmission span and a coherent detection and digital signal processing module for providing dispersion compensation. The transmission span includes at least one fiber pair comprising substantially equal lengths of a positive-dispersion first fiber and a negative-dispersion second fiber that are configured to provide a signal output at transmission distances greater than 10,000 km, in which the combined accumulated dispersion across the operating bandwidth does not exceed the dispersion-compensating capacity of the coherent detection and digital signal processing module. Further described is a fiber for use in an undersea long-haul transmission span. At a transmission wavelength of 1550 nm, the fiber has a dispersion coefficient in the range of −16 to −25 ps/nm·km, and a dispersion slope in the range of 0.04 to 0.02 ps/nm2·km.

Abstract translation: 海底长途传输系统包括一个光纤传输跨度和一个相干检测和数字信号处理模块，用于提供色散补偿。 传输跨度包括至少一个光纤对，其包括基本相等长度的正色散第一光纤和负色散第二光纤，其被配置为在大于10,000km的传输距离处提供信号输出，其中， 工作带宽不超过相干检测和数字信号处理模块的色散补偿能力。 进一步描述的是用于海底长途运输跨度的纤维。 在1550nm的透射波长下，光纤的色散系数为-16〜-25ps / nm·km，色散斜率为0.04〜0.02ps / nm2·km。