title: Modeling of inter-modal Brillouin gain in higher-order-mode fibers.
abstract: Finite element calculations of inter-modal Brillouin gain between LP(0n) modes in acoustically-inhomogeneous higher order mode (HOM) fibers are presented. When the pump beam is launched in the LP(08) mode, the LP(01) mode of the Stokes beam experiences the highest gain, approximately 6.7 dB higher than the peak LP(08)-LP(08) gain. An LP(01) Stokes beam experiences successively more Brillouin gain when pumped by higher-order LP(0n) modes.
authors.affiliation: Department of Physics, United States Air Force Academy, HQ USAFA/DFP 2354 Fairchild Dr USAF Academy, CO 80840, USA. Benjamin.ward@usafa.edu
authors.forename: Benjamin
authors.initials: B
authors.lastname: Ward
authors.forename: Marc
authors.initials: M
authors.lastname: Mermelstein