Frequently Asked Questions

Choose the standard BGDF-SM-7/125-1430 fiber when minimizing amplifier noise figure is the priority, or when you need laser efficiency above 65%. Choose HC or XC when device length matters more — they reach the same 25 dB gain in roughly half or a quarter of the fiber length. Choose the PM variant when your application needs polarization control.

To reach 25 dB of small-signal gain at 1430 nm, the standard fiber needs about 100 m, HC needs about 60 m, and XC needs about 30 m.

No — BGDF-SM-7/125-1430PM matches the XC variant's absorption and gain figures while adding a PANDA polarization-maintaining structure.

All four variants operate across 1370–1490 nm with an amplification range around 1410–1450 nm, and each achieves greater than 50% laser efficiency at 1440 nm relative to 1310 nm pump power.