120 nm wide band switchable fiber laser

A novel method of producing switchable tunable output that spans the S-, C- and L-bands is presented. The achievable tuning range is about 120 nm. The design consists of a wide band SOA, 1 × 16 AWG and an optical selectable switch in a ring configuration. The measured average output powers for S-, C- and L-bands for different output wavelengths are −7.0 dBm, −6 dBm and −6.5 dBm respectively. The SMSR for these wavelengths is about 72 dB.