公开(公告)号：US06946646B2

公开(公告)日：2005-09-20

申请号：US10287995

申请日：2002-11-05

申请人： Xin Chen ,  Nicol A. Heron ,  Timothy L. Hunt ,  Eric J. Mozdy ,  Darren A. Stainer

发明人： Xin Chen ,  Nicol A. Heron ,  Timothy L. Hunt ,  Eric J. Mozdy ,  Darren A. Stainer

IPC分类号： G01J3/447 ,  G01J4/00 ,  G01M11/00 ,  G02F1/01 ,  H04B10/00

CPC分类号： G01M11/3181

摘要： A method for screening fiber polarization mode dispersion using a polarization optical time domain reflectometer. A pulse radiation is emitted into the fiber under test, and the backscattered radiation is measured by the POTDR and used to obtain a POTDR trace. The POTDR trace is then analyzed to compare the variation of signals along the length of the fiber, the variation in signals relating to the level of PMD along the length of the fiber. Because high levels of PMD correspond to localized levels of low variability, by setting the variability of signal threshold sufficiently low, fibers having unacceptably high localized PMD can be identified and removed.

摘要翻译： 一种使用偏振光学时域反射计屏蔽光纤偏振模色散的方法。 脉冲辐射被发射到被测光纤中，反向散射辐射由POTDR测量并用于获得POTDR迹线。 然后分析POTDR迹线以比较沿着光纤长度的信号的变化，与沿着光纤长度的PMD的水平相关的信号的变化。 由于高水平的PMD对应于低变异性的局部水平，通过将信号阈值的可变性设置得足够低，可以识别和去除具有不可接受的高局部PMD的纤维。

公开(公告)号：US07164469B1

公开(公告)日：2007-01-16

申请号：US11174137

申请日：2005-06-30

申请人： Xin Chen ,  Timothy L. Hunt

发明人： Xin Chen ,  Timothy L. Hunt

IPC分类号： G01N21/00

CPC分类号： G01M11/3181 ,  H04B10/071

摘要： A method for screening fiber polarization mode dispersion using a polarization optical time domain reflectometer. A pulse radiation is emitted into the fiber under test, and the backscattered radiation is measured by the POTDR and used to obtain a POTDR trace. A composite trace of more than one POTDR trace is obtained. The composite trace is then analyzed to compare the variation of signals along the length of the fiber, the variation in signals relating to the level of PMD along the length of the fiber. Because high levels of PMD correspond to localized levels of low variability, by setting the variability of signal threshold sufficiently low, fibers having unacceptably high localized PMD can be identified and removed.

摘要翻译： 一种使用偏振光学时域反射计屏蔽光纤偏振模色散的方法。 脉冲辐射被发射到被测光纤中，反向散射辐射由POTDR测量并用于获得POTDR迹线。 获得多于一个POTDR迹线的复合迹线。 然后分析复合迹线以比较沿着光纤长度的信号的变化，与沿着光纤长度的PMD的水平相关的信号的变化。 由于高水平的PMD对应于低变异性的局部水平，通过将信号阈值的可变性设置得足够低，可以识别和去除具有不可接受的高局部PMD的纤维。

公开(公告)号：US6128928A

公开(公告)日：2000-10-10

申请号：US21512

申请日：1998-02-10

申请人： A. Joseph Antos ,  Timothy L. Hunt ,  Dale R. Powers ,  William A. Whedon

发明人： A. Joseph Antos ,  Timothy L. Hunt ,  Dale R. Powers ,  William A. Whedon

IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/02 ,  G02B6/036 ,  G02B6/44 ,  C03B37/075 ,  C03C13/00 ,  C03B6/00 ,  C03B6/18

CPC分类号： G02B6/03694 ,  C03B37/01413 ,  C03C13/045 ,  G02B6/02 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/4492 ,  C03B2201/31 ,  C03B2203/24

摘要： Improved single-mode optical waveguide fibers having a central core region, surrounded by an inner cladding region through which light at a chosen signal wavelength will propagate to an appreciable degree along with propagation of same in the central core region, the inner core region further surrounded by an outer cladding region, the improvement comprising germanium dioxide in the inner cladding region at a concentration within the range of about 0.005 percent by weight to about 1 percent by weight of said inner cladding region, effective to significantly reduce the concentration of oxygen atoms in the inner cladding region which are available to form defects that cause hydrogen-induced attenuation. Also provided are core preforms, overclad preforms, and processes for making the fibers, core preforms and overclad preforms.

摘要翻译： 具有中心纤芯区域的改进的单模光波导光纤被被包围的内包层区域所围绕，所选择的信号波长的光将随着内部包层区域的中心纤芯区域的传播而传播到相当程度，内芯区域进一步包围 通过外包层区域，改进包括在内包层区域中的二氧化锗浓度在所述内包层区域的约0.005重量％至约1重量％的范围内，有效显着降低氧原子浓度 可以形成导致氢诱导衰减的缺陷的内包层区域。 还提供了核心预制件，外包装预成型件以及用于制造纤维，芯预制件和外包装预制件的工艺。

公开(公告)号：US06438999B1

公开(公告)日：2002-08-27

申请号：US09116095

申请日：1998-07-15

申请人： A. Joseph Antos ,  Cynthia B. Giroux ,  Timothy L. Hunt ,  Dale R. Powers ,  Christine L. Tennent ,  William A. Whedon

发明人： A. Joseph Antos ,  Cynthia B. Giroux ,  Timothy L. Hunt ,  Dale R. Powers ,  Christine L. Tennent ,  William A. Whedon

IPC分类号： C03B31027

CPC分类号： G02B6/4492 ,  C03B37/01446 ,  C03B2201/31 ,  C03C13/045 ,  G02B6/02 ,  G02B6/03622 ,  Y02P40/57

摘要： Disclosed is a method of making a hydrogen resistant optical waveguide fiber. The soot preform is heated and then immersed in a GeCl4 gas. A reduced metal species is thus incorporated into the glass soot prior to sintering or consolidation of the soot preform. A hydrogen absorption band around 1530 nm is substantially eliminated from waveguides made from a precursor gas treated preform.

摘要翻译： 公开了制造耐氢光导纤维的方法。 将烟灰预制件加热然后浸入GeCl 4气体中。 因此，在烧结或固结烟炱预制件之前，将还原的金属物质并入玻璃烟炱中。 从前体气体处理的预制件制成的波导基本上消除了大约1530nm的吸氢带。

公开(公告)号：US06687444B2

公开(公告)日：2004-02-03

申请号：US10174337

申请日：2002-06-17

申请人： A. Joseph Antos ,  Cynthia B. Giroux ,  Timothy L. Hunt ,  Dale R. Powers ,  Christine L. Tennent ,  William A. Whedon

发明人： A. Joseph Antos ,  Cynthia B. Giroux ,  Timothy L. Hunt ,  Dale R. Powers ,  Christine L. Tennent ,  William A. Whedon

IPC分类号： G02B600

CPC分类号： G02B6/4492 ,  C03B37/01446 ,  C03B2201/31 ,  C03C13/045 ,  G02B6/02 ,  G02B6/03622 ,  Y02P40/57

摘要： Disclosed is a method of making a hydrogen resistant optical waveguide fiber. The soot preform is heated and immersed in a metal halide gas. A reduced metal species is thus incorporated into the glass soot prior to sintering or consolidation of the soot preform. A hydrogen absorption band around 1530 nm is substantially eliminated from waveguides made from a precursor gas treated preform.

摘要翻译： 公开了制造耐氢光导纤维的方法。 烟炱预制件被加热并浸入金属卤化物气体中。 因此，在烧结或固结烟炱预制件之前，将还原的金属物质并入玻璃烟炱中。 从前体气体处理的预制件制成的波导基本上消除了大约1530nm的吸氢带。

公开(公告)号：US5838866A

公开(公告)日：1998-11-17

申请号：US728713

申请日：1996-10-11

申请人： A. Joseph Antos ,  Timothy L. Hunt ,  Dale R. Powers ,  William A. Whedon

发明人： A. Joseph Antos ,  Timothy L. Hunt ,  Dale R. Powers ,  William A. Whedon

IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/02 ,  G02B6/036 ,  G02B6/44

CPC分类号： G02B6/03694 ,  C03B37/01413 ,  C03C13/045 ,  G02B6/02 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/4492 ,  C03B2201/31 ,  C03B2203/24

摘要： Improved single-mode optical waveguide fibers comprising a central core region, surrounded by an inner cladding region through which light at a chosen signal wavelength will propagate to an appreciable degree along with propagation of same in the central core region, the inner core region further surrounded by an outer cladding region, the improvement comprising germanium dioxide in the inner cladding region at a concentration within the range of about 0.005 percent by weight to about 1 percent by weight of said inner cladding region, effective to significantly reduce the concentration of oxygen atoms in the inner cladding region which are available to form defects that cause hydrogen-induced attenuation. Also provided are core preforms, overclad preforms, and processes for making the fibers, core preforms and overclad preforms.

摘要翻译： 改进的单模光波导光纤包括中心芯区域，被内部包层区域包围，通过该内部包层区域，选定的信号波长的光随着其在中心芯区域中的传播而传播到可观的程度，内核区域进一步包围 通过外包层区域，改进包括在内包层区域中的二氧化锗浓度在所述内包层区域的约0.005重量％至约1重量％的范围内，有效显着降低氧原子浓度 可以形成导致氢诱导衰减的缺陷的内包层区域。 还提供了核心预制件，外包装预成型件以及用于制造纤维，芯预制件和外包装预制件的工艺。