・Zero photodarkening
・High pump and consistent absorption
・High brightness single mode core
・Low non linear effect
・Large mode area with low NA
・High efficiency
・Multimode background (dB/km): < 50
・Cladding NA: 0.46
・Cladding shape: octogonal (non PM)
・Birefringence & design for PM: > 1.10-4 (large core diameter) or > 2.10-4 / Panda
・Proof test level (kpsi) : 50