Multi-core fiber
AssigneeFurukawa Electric Co., Ltd.
InventorsMasanori Takahashi, Ryuichi Sugizaki, Masayoshi Tsukamoto
Life of this patent
Estimating the term…
Abstract
A multi-core fiber includes: plural cores made of silica-based glass; and a cladding enclosing the plural cores and made of silica-based glass, the cladding having a refractive index lower than a maximum refractive index of the plural cores. Further, the multi-core fiber has a mode field diameter of 5.0 μm or larger at a wavelength of 1100 nm, the multi-core fiber provides single-mode propagation at the wavelength of 1100 nm, the multi-core fiber has a bending loss of 1 dB/turn or less at the wavelength of 1100 nm when the multi-core fiber is bent at a radius of 2 mm, and the multi-core fiber has a crosstalk between cores of −30 dB/km or less.
Claims9
A multi-core fiber, comprising:
- at least twelve cores made of silica-based glass;
- and
- a cladding enclosing the at least twelve cores and made of silica-based glass, the cladding having a refractive index lower than a maximum refractive index of the at least twelve cores, wherein:
- the multi-core fiber has a mode field diameter of 5.0 μm or larger at a wavelength of 1100 nm,
- the multi-core fiber provides single-mode propagation at the wavelength of 1100 nm,
- the multi-core fiber has a bending loss of 1 dB/turn or less at the wavelength of 1100 nm when the multi-core fiber is bent at a radius of 2 mm,
- the multi-core fiber has a crosstalk between cores of −30 dB/km or less t the wavelength of 1100 nm, and
- the cladding has an outer diameter of 196.8 μm or less.
Dependencies are inferred from the claim text.