发明名称 |
Bend insensitive gradient index multi-mode light conducting fiber |
摘要 |
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. |
申请公布号 |
US8805145(B2) |
申请公布日期 |
2014.08.12 |
申请号 |
US201213654975 |
申请日期 |
2012.10.18 |
申请人 |
J-Fiber GmbH |
发明人 |
Hämmerle Wolfgang;Hein Harald;Genz Christian;Brehm Lothar;Wirth Falk |
分类号 |
G02B6/02 |
主分类号 |
G02B6/02 |
代理机构 |
Hamre, Schumann, Mueller & Larson, P.C. |
代理人 |
Hamre, Schumann, Mueller & Larson, P.C. |
主权项 |
1. A bend insensitive gradient index multimode 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, a core, an inner cladding, a refraction index trench and an outer cladding, wherein the core includes a core radius R1, an alpha-refraction index profile and a core refraction index difference dn1 with respect to the outer cladding, wherein the refraction index trench includes a refraction index trench radius R3 and a trench refraction index difference dn3 with respect to the outer cladding, wherein the outer cladding 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. |
地址 |
Jena DE |