1.
Ščemeļevs A, Poriņš J. BER Performance of a Lumped Single-pump Fiber Optical Parametric Amplifier in a 10 Gbit/s 4-channel S-band DWDM System. ELEKTRON ELEKTROTECH. 2009;93(5):11-14. Accessed February 3, 2026. https://eejournal.ktu.lt/index.php/elt/article/view/10170