title: Spontaneous decay rates in active waveguides.
abstract: We present a new method of measuring the guided, radiated, and total decay rates in uniform waveguides. It is also shown theoretically that large modifications of the total decay rate can be achieved in realistic erbium-doped fiber amplifiers and erbium-doped waveguide amplifiers with effective mode area radii smaller than approximately 1 microm.
authors.affiliation: Optics and Photonics Research Center, Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, cep 13083-970, Campinas, São Paulo, Brazil. anibal@ifi.unicamp.br
authors.forename: Andrés Anibal
authors.initials: AA
authors.lastname: Rieznik
authors.forename: Gustavo
authors.initials: G
authors.lastname: Rigolin