公开(公告)号：US20100296783A1

公开(公告)日：2010-11-25

申请号：US12782459

申请日：2010-05-18

Applicant: Hiroshi OYAMADA

Inventor： Hiroshi OYAMADA

IPC: G02B6/036

CPC classification number: G02B6/0365 ,  G02B6/02014 ,  G02B6/02266

Abstract: Provided is an optical fiber including: a first core at a center thereof; a second core adjacent to the first core to cover a circumference of the first core; a third core adjacent to the second core to cover a circumference of the second core; and a cladding adjacent to the third core to cover a circumference of the third core, where conditions of 0.28%≦Δ1≦0.4%, −0.05%≦Δ2≦0.05%, −1.0%≦Δ3≦−0.5%, 3.8 μm≦a≦4.5 μm, 12 μm≦b≦21 μm, and 1.5 μm≦c-b≦10 μm hold, and loss increase resulting when the optical fiber is wound on a mandrel having a diameter of 20 mm is 0.1 dB/turn or smaller at a wavelength of 1625 nm, where Δ1 is a specific refractive index difference of the first core from the cladding refractive index, Δ2 is a specific refractive index difference of the second core from the cladding refractive index, Δ3 is a specific refractive index difference of the third core from the cladding refractive index, “a” is a radius of a boundary between the first core and the second core with respect to a center of the first core, “b” is a radius of a boundary between the second core and the third core with respect to the center of the first core, and “c” is a radius of a boundary between the third core and the cladding with respect to the center of the first core.

Abstract translation: 提供一种光纤，包括：第一芯在其中心; 与所述第一芯相邻的第二芯，以覆盖所述第一芯的圆周; 与所述第二芯相邻的第三芯，以覆盖所述第二芯的圆周; 和覆盖第三芯的圆周的包层，其中条件为0.28％＆lt; 1; nlE; 0.4％，-0.05％＆nlE;＆Dgr; 2＆nlE; 0.05％，-1.0％＆nlE;＆Dgr; 3和nlE; -0.5％，3.8μm＆nlE; a＆nlE;4.5μm，12μm＆nlE; b＆nlE;21μm和1.5μm＆nlE; c-b＆nlE;10μm保持，以及当光纤缠绕在具有直径 20nm的波长在1625nm处为0.1dB /圈或更小，其中＆Dgr; 1是第一纤芯与包层折射率的比折射率差，Dgr; 2是第二纤芯的比折射率差 从包层折射率，＆Dgr; 3是第三纤芯与包层折射率的比折射率差，“a”是第一纤芯与第二纤芯之间的边界相对于第一纤芯的中心的半径 芯“b”是相对于第一芯的中心的第二芯和第三芯之间的边界的半径， nd“c”是相对于第一芯的中心的第三芯和包层之间的边界的半径。

公开(公告)号：US20110286711A1

公开(公告)日：2011-11-24

申请号：US12782487

申请日：2010-05-18

Applicant: Hiroshi OYAMADA ,  Yuhei URATA

Inventor： Hiroshi OYAMADA ,  Yuhei URATA

IPC: G02B6/036

CPC classification number: G02B6/0281 ,  G02B6/03627

Abstract: Provided is an optical fiber including: a core at a center thereof; a first cladding adjacent to the core to cover a circumference of the core; and a second cladding adjacent to the first cladding to cover a circumference of the first cladding, where 0.35%≦(Δ1−Δ2)≦0.65%, 0.30%≦Δ1≦0.55%, −0.20%≦Δ2≦−0.05%, 0.22≦a/b≦0.34, and 4≦b√|Δ2|≦10 hold, and loss increase resulting when the optical fiber is wound on a mandrel having a diameter of 20 mm is 0.5 dB/turn or smaller at a wavelength of 1550 nm, where Δ1(%) is a specific refractive index difference of a maximum of a refractive index distribution of the core with reference to a refractive index of the second cladding, Δ2(%) is a specific refractive index difference of a minimum of a refractive index distribution of the first cladding with reference to the refractive index of the second cladding, a(μm) is a radius of a boundary between the core and the first cladding with respect to a center of the core, and b(μm) is a radius of a boundary between the first cladding and the second cladding with respect to the center of the core.

Abstract translation: 本发明提供一种光纤，包括：中心的芯; 邻近所述芯以覆盖所述芯的圆周的第一包层; 与第一包层相邻以覆盖第一包层的圆周的第二包层，其中0.35％＆lt;（I Dgr; 1＆Dgr; 2）＆nlE; 0.65％，0.30％＆nlE;＆Dgr; 1＆nlE; 0.55％，-0.20 ％＆nlE;＆Dgr; 2＆nlE; -0.05％，0.22＆nlE; a / b＆nlE; 0.34和4＆nlE;b√|＆Dgr; 2 |＆nlE; 10保持，当光纤缠绕在具有 20mm的直径在1550nm的波长处为0.5dB /匝或更小，其中＆Dgr; 1（％）是芯的折射率分布的最大值的折射率差，相对于 第二包层＆Dgr; 2（％）是第一包层的折射率分布的最小值与第二包层的折射率的比折射率差，a（μm）是第二包层的折射率分布的半径 芯和第一包层相对于芯的中心，并且b（μm）是第一包层和第二包层之间的边界的相对于 核心的中心。

公开(公告)号：US20120219260A1

公开(公告)日：2012-08-30

申请号：US13403983

申请日：2012-02-24

Applicant: Hiroshi OYAMADA

Inventor： Hiroshi OYAMADA

IPC: G02B6/028 ,  C03C25/60

CPC classification number: C03C25/607 ,  C03C2201/21 ,  C03C2201/22

Abstract: A method for manufacturing deuterium-treated silica glass includes exposing silica glass to a deuterium-containing atmosphere for a predetermined period of time to diffuse deuterium molecules within the silica glass, maintaining the silica glass at 40° C. or higher, and cooling the silica glass to room temperature. The silica glass is a silica glass-based optical fiber having a core made of silica glass, where the core is positioned at a center of the optical fiber and contains at least germanium, and a clad made of silica glass, where the clad surrounds the core and has a lower refractive index than the core. A surface of the silica glass is covered with a resin coating.

Abstract translation: 制备氘处理石英玻璃的方法包括将二氧化硅玻璃暴露于含氘气氛中一段预定的时间以将氘分子扩散到二氧化硅玻璃内，保持二氧化硅玻璃在40℃或更高，并冷却二氧化硅 玻璃到室温。 石英玻璃是具有由石英玻璃制成的芯的二氧化硅玻璃基光纤，其中芯位于光纤的中心并且至少包含锗，并且由石英玻璃制成的包层，其中包层围绕 并具有比芯更低的折射率。 石英玻璃的表面被树脂涂层覆盖。