Bend insensitive gradient index multi-mode light conducting fiber

摘要

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.

主权项

1. 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; a core; and 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 100 m decreases by less than 5% and the numerical aperture decreases by less than 2.5%.