Frequently Asked Questions

It has the highest GeO2 concentration (98% vs. 75% and 50%) and correspondingly the highest refractive index contrast (Δn = 0.14), plus a larger multimode core (8×7 µm) rather than the single-mode cores of the other two variants.

Attenuation is 200 dB/km at 1550 nm, dropping to 110 dB/km at 2100 nm, and rising again to 200 dB/km at 2300 nm — notably higher than the single-mode germanate variants, reflecting the trade-off for maximum index contrast.

Yes, typical splicing loss to ordinary fiber is around 1 dB.