Furukawa Electric Review No.56Development of 10 W Output in 1550 nm Wavelength Region Fiber Light Source by Use of LMA-ErDFA Pumped by Raman Laser

Takefumi Ota, Keisuke Tominaga, Taishi Kagimoto, Shun Yamauchi, Kenichi Miki

Spatial radiation of lasers such as spatial optical communication, Light Detection and Ranging (LiDAR), is progressing in its market development for applications. In this case, a light source with a high output power and a Single-Mode (SM) characteristic is being increasingly demanded. We developed a prototype fiber amplifier with over 10 W of output power by pumping a Very Large Mode Area Er-Doped Fiber (VLMA-ErDF) using a high-power Raman laser named Cascaded Raman Resonator Laser (CRRL). An output with a 1.6 mJ of pulse energy, by amplifying the 2 μsec temporal width pulse by a similar pumping configuration was demonstrated in OFS Fitel, LLC. (OFS). This is also reported.