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：US20170219768A1

公开(公告)日：2017-08-03

申请号：US15329741

申请日：2016-05-12

Applicant: FUJIKURA LTD.

Inventor： Kazuyuki HAYASHI ,  Katsuaki IZOE ,  Kazuhiko AIKAWA

IPC: G02B6/02 ,  G02B6/024

CPC classification number: G02B6/02042 ,  G02B6/02 ,  G02B6/02314 ,  G02B6/024

Abstract: A multicore polarization-maintaining fiber 10 includes a plurality of cores 11, a cladding 12 surrounding the plurality of cores 11, and a plurality of stress applying parts 15 provided sandwiching the plurality of cores 11 in a region surrounded by the outer circumferential surface of the cladding 12. The cross sectional area of the stress applying part 15 is greater than the cross sectional area of the core 11. Stress applying parts 15 of the plurality of stress applying parts 15 are disposed in a first direction, and stress applying parts 15 of the plurality of stress applying parts 15 are disposed in a second direction different from the first direction.

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。