title: Breathing solitary-pulse pairs in a linearly coupled system.
abstract: It is shown that pairs of solitary pulses (SPs) in a linearly coupled system with opposite group velocity dispersions form robust breathing bound states. The system can be realized by temporal-modulation coupling of SPs with different carrier frequencies propagating in the same medium, or by coupling of SPs in a dual-core waveguide. Broad SP pairs are produced in a virtually exact form by means of the variational approximation. Strong nonlinearity tends to destroy the periodic evolution of the SP pairs.
authors.forename: Brenda
authors.initials: B
authors.lastname: Dana
authors.forename: Boris A
authors.initials: BA
authors.lastname: Malomed
authors.forename: Alon
authors.initials: A
authors.lastname: Bahabad