公开(公告)号：US08750664B2

公开(公告)日：2014-06-10

申请号：US13059971

申请日：2009-07-03

申请人： Liyong Zhang ,  Weimin Lu ,  Haigang Wu ,  Qunxing Li ,  Xiaopeng Huang

发明人： Liyong Zhang ,  Weimin Lu ,  Haigang Wu ,  Qunxing Li ,  Xiaopeng Huang

IPC分类号： G02B6/02 ,  G02B6/036

CPC分类号： G02B6/0281 ,  G02B6/02395 ,  G02B6/03611 ,  G02B6/03627

摘要： This invention discloses a bend insensitive single mode fiber, which is composed by a bare glass fiber with a round cross section and two resin protective layers with circular cross sections surrounding the outer of the bare glass fiber. It is characterized in that the bare glass fiber is composed by a core layer with a round cross section and two claddings with circular cross sections. The refractive index of the core layer is higher than the index of the two claddings and the refractive index difference between the core layer and the first cladding is larger than the difference between the first and second claddings. The second cladding is made of pure SiO2. The refractive index profile of the core layer follows a power function, and the refractive index profile of the two claddings follow a ladder-type distribution. The loss of the invented fiber is insensitive to the bending of the fiber, which meets the requirements of ITU.T G.657.A and G.657.B standards, respectively. It is applicable to the Fiber To The Home (FTTH) and other local area network and the access network systems.

摘要翻译： 本发明公开了一种弯曲不敏感单模光纤，其由具有圆形横截面的裸露玻璃纤维和具有围绕裸露玻璃纤维外部的圆形横截面的两个树脂保护层组成。 其特征在于，裸玻璃纤维由具有圆形截面的芯层和具有圆形横截面的两个包层组成。 芯层的折射率高于两个包层的折射率，并且芯层和第一包层之间的折射率差大于第一和第二包层之间的差。 第二包层由纯SiO2制成。 芯层的折射率分布遵循功率函数，并且两个包层的折射率分布遵循梯形分布。 本发明光纤的损耗对光纤的弯曲不敏感，分别符合ITU-T G.657.A和G.657B标准的要求。 适用于光纤到户（FTTH）等局域网和接入网系统。

公开(公告)号：US20110142404A1

公开(公告)日：2011-06-16

申请号：US13059971

申请日：2009-07-03

申请人： Liyong Zhang ,  Weimin Lu ,  Haigang Wu ,  Qunxing Li ,  Xiaopeng Huang

发明人： Liyong Zhang ,  Weimin Lu ,  Haigang Wu ,  Qunxing Li ,  Xiaopeng Huang

IPC分类号： G02B6/036

CPC分类号： G02B6/0281 ,  G02B6/02395 ,  G02B6/03611 ,  G02B6/03627

摘要： This invention discloses a bend insensitive single mode fiber, which is composed by a bare glass fiber with a round cross section and two resin protective layers with circular cross sections surrounding the outer of the bare glass fiber. It is characterized in that the bare glass fiber is composed by a core layer with a round cross section and two claddings with circular cross sections. The refractive index of the core layer is higher than the index of the two claddings and the refractive index difference between the core layer and the first cladding is larger than the difference between the first and second claddings. The second cladding is made of pure SiO2. The refractive index profile of the core layer follows a power function, and the refractive index profile of the two claddings follow a ladder-type distribution. The loss of the invented fiber is insensitive to the bending of the fiber, which meets the requirements of ITU.T G.657.A and G.657.B standards, respectively. It is applicable to the Fiber To The Home (FTTH) and other local area network and the access network systems.

摘要翻译： 本发明公开了一种弯曲不敏感单模光纤，其由具有圆形横截面的裸露玻璃纤维和具有围绕裸露玻璃纤维外部的圆形横截面的两个树脂保护层组成。 其特征在于，裸玻璃纤维由具有圆形截面的芯层和具有圆形横截面的两个包层组成。 芯层的折射率高于两个包层的折射率，并且芯层和第一包层之间的折射率差大于第一和第二包层之间的差。 第二包层由纯SiO2制成。 芯层的折射率分布遵循功率函数，并且两个包层的折射率分布遵循梯形分布。 本发明光纤的损耗对光纤的弯曲不敏感，分别符合ITU-T G.657.A和G.657B标准的要求。 适用于光纤到户（FTTH）等局域网和接入网系统。