Multi-core optical fiber, optical cable and optical connector

Abstract

The MCF of this embodiment includes 8 or more cores. The diameter of the common cladding is less than or equal to 126 μm. As the optical characteristics of each core, TL at a specified wavelength of 1300nm is 0.4dB / km or less, MFD at a specified wavelength is 8.0μm to 10.1μm, BR is 5mm or more or BR is 3mm or more and BL is less than 5mm Less than or equal to 0.25dB / turn at the specified wavelength, λ0 is 1300nm to 1324nm, λcc is less than or equal to 1260nm, and XT or XTs at the specified wavelength is less than or equal to 0.001 / km.

Description

technical field [0001] The present invention relates not only to multi-core optical fibers (hereinafter referred to as "MCF"), but also to optical components such as optical cables and optical connectors (including arrays), and to optical components that require higher density for standard-sized optical fibers used. Background technique [0002] An MCF having a plurality of cores extending along the fiber axis in a common cladding is expected as an optical transmission path capable of transmitting large-capacity information. In the above-mentioned MCF, various researches have been conducted for the purpose of transmitting a larger capacity of information (see, for example, Non-Patent Documents 1 to 7). [0003] Non-Patent Documents 1 and 2 disclose theoretical and simulation results regarding crosstalk between adjacent cores. In addition, Non-Patent Documents 3 to 7 disclose the theory and trial production results of trench-assisted optical fibers. [0004] Non-Patent Docu...

AI Technical Summary

Problems solved by technology

However, in this case, the propagation of the cladding mode becomes easier, and the recoupling of the cladding mode to the core mode tends to cause multiple optical path interference (MPI: Multiple Pass Interference), etc.

As a result, the signal quality of the signal light propagating through the core tends to deteriorate

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