Five wavelength DFB fiber laser source

Stable single-mode laser sources with narrow linewidth are key components in high-capacity wavelength-division multiplexed (WDM) optical communication systems. Distributed feedback (DFB) and distributed Bragg reflection (DBR) fiber lasers are compact devices, which are able to provide stable single-mode operation. They are inherently fiber compatible and cascadable. We present a multiwavelength laser source consisting of five fiber DFB lasers spliced together and pumped by a single 60-mW 1480-nm semiconductor laser.