・CW and pulsed fiber lasers around 2 microns
・High pump and consistent absorption
・High brightness single mode core
・Large mode area with low NA
・High efficiency (> 50%)
・Compatible with 793 nm pump
・Multimode background (dB/km): < 50
・Cladding shape: octogonal (non PM)
・Birefringence for PM: > 2.10-4 / Panda type