QUASI-SINGLE-MODE OPTICAL FIBER WITH A LARGE EFFECTIVE AREA

摘要

A quasi-single-mode optical fiber with a large effective area is disclosed. The quasi-single-mode fiber has a core with a radius greater than 5 μm, and a cladding section configured to support a fundamental mode and a higher-order mode. The fundamental mode has an effective area greater than 170 μm2 and an attenuation of no greater than 0.17 dB/km at a wavelength of 1530 nm. The higher-order mode has an attenuation of at least 1.0 dB/km at the wavelength of 1530 nm. The quasi-single-mode optical fiber has a bending loss of less than 0.02 dB/turn for a bend diameter of 60 mm for a wavelength of 1625 nm.

主权项

1. A quasi-single-mode (QSM) optical fiber, comprising:
a core having a centerline and an outer edge, with a peak refractive index n0 on the centerline and a refractive index n1 at the outer edge; a cladding section surrounding the core, wherein the cladding section includes an inner annular moat region immediately adjacent the core; wherein the core and cladding section support a fundamental mode LP01 and a higher-order mode LP11 and define: i) for the fundamental mode LP01: an effective area Aeff>170 μm2 and an attenuation of no greater than 0.17 dB/km of at 1530 nm; ii) for the higher-order mode LP11: an attenuation of at least 1.0 dB/km at 1530 nm; and iii) a bending loss of BL<0.02 dB/turn at 1625 nm and for a bend diameter DB=60 mm.