公开(公告)号：US20130302001A1

公开(公告)日：2013-11-14

申请号：US13890749

申请日：2013-05-09

Applicant: FUJIKURA LTD.

Inventor： Kazuhiko AIKAWA ,  Masahiro ASANO ,  Kazuyuki HAYASHI ,  Masami MIYACHI ,  Manabu KUDOH

IPC: G02B6/02 ,  C03B37/012

CPC classification number: G02B6/02214 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/0122 ,  C03B37/01222 ,  C03B2201/04 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/24 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2203/02 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/31 ,  C03B2203/34 ,  C03B2205/40 ,  Y02P40/57

Abstract: A low-loss optical fiber over wide wavelength range includes a transmission loss of less than or equal to 40 dB/km in a whole wavelength range of 400-1400 nm, and being manufactured by drawing an optical fiber preform including a core composed of a silica glass having a hydroxyl-group concentration of less than or equal to 1 ppm and a cladding composed of a silica glass having a fluorine concentration of more than or equal to 3.2 wt %.

Abstract translation: 在宽波长范围内的低损耗光纤包括在400-1400nm的整个波长范围内的传输损耗小于或等于40dB / km，并且通过绘制包括由 羟基浓度小于或等于1ppm的二氧化硅玻璃和由氟浓度大于或等于3.2wt％的二氧化硅玻璃构成的包层。

公开(公告)号：US20130308914A1

公开(公告)日：2013-11-21

申请号：US13856117

申请日：2013-04-03

Applicant: Fujikura Ltd.

Inventor： Kazuyuki HAYASHI ,  Katsuaki IZOE ,  Yutaka ENDOH ,  Kazuhiko AIKAWA ,  Manabu KUDOH

IPC: G02B6/024

CPC classification number: G02B6/024

Abstract: A polarization-maintaining optical fiber of the present invention includes a core, a pair of stress-applying parts provided on both sides of the core, and a cladding surrounding the core and the stress-applying parts, and is used in a wavelength range of 400 to 680 nm. The diameter of the cladding is 125 μm, the diameter of the stress-applying part is 33 to 37 μm, a distance between the pair of stress-applying parts is 8.6 to 15.4 μm, a relative refractive index difference between the core and the cladding is 0.35 to 0.45%, and a cut-off wavelength is less than or equal to 400 nm.

Abstract translation: 本发明的偏振保持光纤包括芯，设置在芯的两侧的一对应力施加部以及围绕芯和应力施加部的包层，并且在波长范围 400至680nm。 包层的直径为125μm，应力施加部的直径为33〜37μm，一对应力部分之间的距离为8.6〜15.4μm，芯与包层的相对折射率差 为0.35〜0.45％，截止波长为400nm以下。