2024-03-29T13:11:40Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/481292022-11-17T02:08:08Zhdl_2115_20053hdl_2115_145A large effective area multi-core fiber with an optimized cladding thicknessTakenaga, KatsuhiroArakawa, YokoSasaki, YusukeTanigawa, ShojiMatsuo, ShoichiroSaitoh, KunimasaKoshiba, Masanori547The cladding thickness of trench-assisted multi-core fibers was theoretically and experimentally investigated in terms of excess losses of outer cores. No significant micro-bending loss increase was observed on multi-core fibers with the cladding thickness of about 30 μm. The tolerance for the micro-bending loss of a multi-core fiber is larger than that of the single core fiber. However, the cladding thickness will be limited by the occurrence of the excess loss on outer cores. The reduction of cladding thickness is probably limited around 40 μm in terms of the excess loss. The multi-core fiber with an effective area of 110 μm2 at 1.55 μm and 181-μm cladding diameter was realized without any excess loss.Optical Society of AmericaJournal Articleapplication/pdfhttp://hdl.handle.net/2115/48129https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/48129/1/OE19-26_B543-B550.pdf1094-4087Optics Express1926B543B5502011-12-12enginfo:doi/10.1364/OE.19.00B543©2011 Optical Society of Americapublisher