Abstract

The earlier work on soft glass fiber lasers doped with rare earths were used as oscillators¹ and for several amplifier applications. A gain of 47dB was obtained for the output at 1.06 μm from an InAs_1-xP_x laser diode. ² A gain of 40dB was obtained for a helium neon laser emitting at 1.0621μm. ³ Experiments were done with the use of a single mode fiber as a preamplifier in a detection system. ⁴ Spontaneous emission and saturation limits imposed by super luminescence have also been considered. ⁵ With the availability of high radiance lasers and the use of low loss glass hosts end pumped Nd doped fibers were lased first in multimode fibers⁶ and later in single mode fibers with Nd, Pr or Er. ^7,8

© 1988 Optical Society of America