Patent ID: 9088364
Filing Date: 2015-07-21
Classification: G02B,H04B

Abstract:
1. An optical transmission system comprising: an optical transmitting unit that outputs optical signals having a plurality of wavelengths included in an operation wavelength band; a multi-core optical fiber being connected to the optical transmitting unit and having a plurality of core portions; an optical multiplexing unit that multiplexes the optical signals to the core portions; an optical demultiplexing unit that demultiplexes the optical signals transmitted through the multi-core optical fiber; and an optical receiving unit that receives the optical signals demultiplexed by the optical demultiplexing unit, wherein the multi-core optical fiber includes the core portions and a cladding portion being positioned around the core portions and including a plurality of holes disposed to form a triangular lattice shape around the core portions, the multi-core optical fiber transmits the optical signals in a single mode, and a confinement loss of the multi-core optical fiber is equal to or less than 0.001 dB/km at a wavelength included in the operation wavelength band.