title: Measurement of higher-order mode propagation losses in effectively single mode fibers.
abstract: We present a direct and nondestructive measurement of the propagation loss of higher-order modes (HOMs) in effectively single-mode fibers. Lossy HOMs are excited by applying local stress at various points alongside a straight single mode fiber. The change of the HOM power as a function of the propagation distance is recorded at the fiber end by performing a modal decomposition with a correlation filter. The results for the HOM propagation loss are compared to simulations yielding very good agreement.
authors.forename: Christian
authors.initials: C
authors.lastname: Schulze
authors.forename: Daniel
authors.initials: D
authors.lastname: Flamm
authors.forename: Sonja
authors.initials: S
authors.lastname: Unger
authors.forename: Siegmund
authors.initials: S
authors.lastname: Schröter
authors.forename: Michael
authors.initials: M
authors.lastname: Duparré