公开(公告)号：US08805145B2

公开(公告)日：2014-08-12

申请号：US13654975

申请日：2012-10-18

Applicant: J-Fiber GMBH

Inventor： Wolfgang Hämmerle ,  Harald Hein ,  Christian Genz ,  Lothar Brehm ,  Falk Wirth

IPC: G02B6/02

CPC classification number: G02B6/0365 ,  G02B6/0288

Abstract: The invention relates to a bend insensitive gradient index multimode light conducting fiber comprising a leakage mode dependent optical core diameter that is uniform over its length and numerical aperture that is uniform over its length, a core (1), an inner cladding (2), a refraction index trench (3) and an outer cladding (4), wherein the core (1) includes a core radius R1, an alpha-refraction index profile and a core refraction index difference dn1 with respect to the outer cladding (4), wherein the refraction index trench (3) includes a refraction index trench radius R3 and a trench refraction index difference dn3 with respect to the outer cladding (4), wherein the outer cladding (4) includes an outer cladding radius R4 and a refraction index between 1.40 and 1.55, wherein for a light wavelength of 850 nm and an overfilled launch (OFL), the optical core diameter for a fiber length in a range between 2 m and 300 m decreases by less than 5% and the numerical aperture decreases by less than 2.5% and the curvature related attenuation increase for two turns and a curvature radius of 7.5 mm is less than 0.2 db.

Abstract translation: 本发明涉及一种弯曲不敏感梯度折射率多模光导纤维，其包括在其长度上均匀的泄漏模式相关光纤芯直径和在其长度上均匀的数值孔径;芯（1），内包层（2）， 折射折射率沟槽（3）和外包层（4），其中芯部（1）包括芯部半径R1，α折射率分布和相对于外包层（4）的芯折射率差dn1， 其中所述折射折射沟槽（3）包括相对于所述外包层（4）的折射率折射率沟槽半径R3和沟槽折射率差dn3，其中所述外包层（4）包括外包层半径R4和 1.40和1.55，其中对于850nm的光波长和过满的发射（OFL），在2μm和300μm之间的范围内的光纤长度的光纤芯直径减小小于5％，并且数值孔径减小 超过2.5％，曲率相关衰减增加两圈，曲率半径为7.5mm小于0.2db。

公开(公告)号：US09164229B2

公开(公告)日：2015-10-20

申请号：US14339030

申请日：2014-07-23

Applicant: J-FIBER GMBH

Inventor： Wolfgang Hämmerle ,  Christian Genz ,  Lothar Brehm ,  Falk Wirth

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/12

CPC classification number: G02B6/0288 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/0365 ,  G02B2006/12119

Abstract: The invention relates to a bend insensitive gradient index multi-mode light conducting fiber comprising a leakage mode dependent optical core diameter that is uniform over its length and a numerical aperture that is uniform over its length, wherein for a light wavelength of 850 nm and an overfilled launch (OFL), the optical core diameter for a fiber length in a range between 2 m and 100 m decreases by less than 5% and the numerical aperture decreases by less than 2.5% and the curvature related attenuation increase for two turns and a curvature radius of 7.5 mm is less than 0.2 db.

Abstract translation: 本发明涉及一种弯曲不敏感梯度折射率多模光导纤维，其包括在其长度上均匀的泄漏模式相关光纤芯径和在其长度上均匀的数值孔径，其中对于850nm的光波长和 过满的发射（OFL），光纤长度在2μm和100μm之间的光纤直径减小了小于5％，数值孔径减小了小于2.5％，曲率相关衰减增加了两圈， 曲率半径7.5mm小于0.2db。