公开(公告)号：US09249046B2

公开(公告)日：2016-02-02

申请号：US13945142

申请日：2013-07-18

Applicant: j-fiber GmbH

Inventor： Christian Genz ,  Wolfgang Haemmerle ,  Lothar Brehm

IPC: C03B37/018

CPC classification number: C03B37/01815 ,  C03B2203/26 ,  C03B2207/66 ,  C03B2207/70

Abstract: Methods for making a preform for a graded-index multimode fiber by using an inside deposition process are disclosed. The methods are characterized by an iterative refractive index profile correction with the following steps: determining a target refractive index profile for the preform to be produced, carrying out an inside deposition process with fixed volume flows for the reacting gases inside a tube and a given burner speed for all deposited layers, collapsing the tube and measuring the actual refractive index profile, comparing the target profile with the actual profile and calculating a correction value of index differences, converting this correction value in corrected burner speeds as varying process parameter, carrying out a inside deposition process with fixed gas flows and corrected burner speeds for all layers to be deposited.

Abstract translation: 公开了通过使用内部沉积工艺制备用于渐变折射率多模光纤的预成型件的方法。 该方法的特征在于迭代折射率分布校正，具有以下步骤：确定待生产的预成型件的目标折射率分布，对于管内和给定的燃烧器内的反应气体进行固定体积流的内部沉积工艺 对所有沉积层进行速度，塌缩管并测量实际折射率分布，将目标轮廓与实际轮廓进行比较，并计算折射率差异的校正值，将校正的燃烧器速度中的该校正值转换为变化的过程参数，执行 内部沉积过程中具有固定气体流量和校正的燃烧器速度，用于所有层的沉积。

公开(公告)号：US09164229B2

公开(公告)日：2015-10-20

申请号：US14339030

申请日：2014-07-23

Applicant: J-FIBER GMBH

Inventor： Wolfgang Hämmerle ,  Christian Genz ,  Lothar Brehm ,  Falk Wirth

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/12

CPC classification number: G02B6/0288 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/0365 ,  G02B2006/12119

Abstract: The invention relates to a bend insensitive gradient index multi-mode light conducting fiber comprising a leakage mode dependent optical core diameter that is uniform over its length and a numerical aperture that is uniform over its length, wherein for a light wavelength of 850 nm and an overfilled launch (OFL), the optical core diameter for a fiber length in a range between 2 m and 100 m decreases by less than 5% and the numerical aperture decreases by less than 2.5% and the curvature related attenuation increase for two turns and a curvature radius of 7.5 mm is less than 0.2 db.

Abstract translation: 本发明涉及一种弯曲不敏感梯度折射率多模光导纤维，其包括在其长度上均匀的泄漏模式相关光纤芯径和在其长度上均匀的数值孔径，其中对于850nm的光波长和 过满的发射（OFL），光纤长度在2μm和100μm之间的光纤直径减小了小于5％，数值孔径减小了小于2.5％，曲率相关衰减增加了两圈， 曲率半径7.5mm小于0.2db。

公开(公告)号：US20130239623A1

公开(公告)日：2013-09-19

申请号：US13787084

申请日：2013-03-06

Applicant: J-FIBER GMBH

Inventor： Jurgen Rosenkranz ,  Wolfgang Heammerle ,  Lothar Brehm ,  Katrin Roessner ,  Robert Hanf

IPC: C03B37/027 ,  C03B37/012

CPC classification number: C03B37/02763 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/0122 ,  C03B37/01222 ,  C03B2201/04 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/02 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/31 ,  C03B2203/34 ,  C03B2205/40 ,  H01S3/094007

Abstract: Methods for making active laser fibers include the production of an optical fiber with disturbed (or deviated) cylindrical symmetry on the glass surface of the fiber. The methods include a preform containing a central core made of glass. In one embodiment, the preform is circular and surrounded by additional glass rods and an outer glass jacket tube. In a first alternative embodiment, this preform is merged during fiber drawing. In a second alternative embodiment, the preform merged in a process forming a compact glass body with disturbed cylindrical symmetry. This compact preform is drawn into a fiber under conditions maintaining the disturbed cylindrical symmetry.

Abstract translation: 制造活性激光光纤的方法包括在纤维的玻璃表面上产生具有干扰（或偏离）圆柱对称的光纤。 该方法包括一个包含由玻璃制成的中心芯的预制件。 在一个实施例中，预成型件是圆形的并被另外的玻璃棒和外部玻璃护套管包围。 在第一替代实施例中，在纤维拉伸期间将该预制件合并。 在第二替代实施例中，预成型件在形成具有扰动的圆柱形对称的紧凑玻璃体的工艺中合并。 这种紧凑的预成型件在保持受扰的圆柱形对称性的条件下被拉入纤维中。