title: Crosstalk analysis in homogeneous multi-core two-mode fiber under bent condition.
abstract: We analyze the inter-core crosstalk in homogeneous multi-core two-mode fibers (MC-TMFs) under bent condition by using the coupled-mode equations. In particular, we investigate the effects of the intra-core mode coupling on the inter-core crosstalk for two different types of MC-TMFs at various bending radii. The results show that the inter-core homo-mode crosstalk of LP(11) mode is dominant under the gentle fiber bending condition due to its large effective area. However, as the fiber bending becomes tight, the intra-core mode coupling is significantly enhanced and consequently makes all the inter-core crosstalk levels comparable to each other regardless of the mode. A similar tendency is observed at a reduced bending radius when the difference in the propagation constants between modes is large and core pitch is small.
authors.forename: J H
authors.initials: JH
authors.lastname: Chang
authors.forename: H G
authors.initials: HG
authors.lastname: Choi
authors.forename: S H
authors.initials: SH
authors.lastname: Bae
authors.forename: D H
authors.initials: DH
authors.lastname: Sim
authors.forename: Hoon
authors.initials: H
authors.lastname: Kim
authors.forename: Y C
authors.initials: YC
authors.lastname: Chung