title: Single LP(0,n) mode excitation in multimode fibers.
abstract: We analyze the transmission of a Single mode - Multimode -Multimode (SMm) fiber structure with the aim of exciting a single radial mode in the second multimode fiber. We show that by appropriate choice of the length of the central multimode fiber one can obtain > 90% of the total core power in a chosen mode. We also discuss methods of removing undesirable cladding and radiation modes and estimate tolerances for practical applications.
authors.forename: Nitin
authors.initials: N
authors.lastname: Bhatia
authors.forename: Kailash C
authors.initials: KC
authors.lastname: Rustagi
authors.forename: Joseph
authors.initials: J
authors.lastname: John