We review current work on fiber laser systems at Corning. In particular, we describe design and performance of all-glass double-clad laser fibers, broad-area laser pumps, and pump coupling optics. We discuss our approaches using single-polarization fiber and low-nonlinearity photonic band gap fiber as technologies for developing the next generation of high-power fiber lasers.
This paper presents recent progress on SOAs with dilute optical mode. The SOA optical mode is designed to be large to achieve high saturation power and low coupling losses of 1.16 and 0.89 dB for TE and TM polarizations with a lens fiber. A 2-mm long SOA has high saturation power (16.3 dBm), low PDG (<1 dB), low noise figure (<7.2 dB) and medium gain (>19.5 dB) across C-band. A 1.5mm-long SOA was successfully used as a 10 Gbit/s booster amplifier for 100km transmission. The dynamic properties of the SOA were characterized to support application as optical gate switch in sub GHz speed.