Abstract

Superluminescent diodes (SLD) are very attractive light sources for fiber optic sensors, especially for fiber optic gyros and microcavity sensors. SLD emits high-power low divergence beams with broad (up to 15 nm) spectrum width with coupling coefficient to single-mode fiber up to 25%[1]. However when output power exceeds 10 mW typical value of Fabry-Perot modulation depth is up to 20% even in antireflection-coated window structure. We developed AlGaAs/GaAs SLD with output power up to 15 mw and Fabry-Perot modulation depth about 1%.

© 1992 Optical Society of America