) at 16 channels.

A super L-band amplifier (21 dB gain over 1575~1626 nm) is demonstrated using two types of erbium doped fibers designed for single-mode and multi-mode pumping. Noise figure, power consumption and fabrication cost are analyzed.

Abstract-We have successfully demonstrated a long-haul transmission of 32 × 10 Gbit/s and 64 × 10 Gbit/s over singlemode fiber of 650 km and 530 km respectively by using RAMAN-EDFA hybrid optical amplifier as inline and preamplifier amplifiers. The measured Q-factors and BER of the 32 and 64 channels after 650 and 530 km respectively (16.99-17 dB) and (10 -13 ) were higher than the standard acceptable value, which offers feasibility of the hybrid amplifiers including EDFA optical amplifiers for the long-haul transmission.