Super L band EDFA can be combined with super C band EDFA to provide customers with a high-bandwidth optical amplification solution. Based on industry-leading self-developed optical device technology and unique optical design, software and hardware design, Super L band extends the amplifiable optical signal wavelengths beyond 1627nm and achieves an impressive amplification bandwidth of up to 52nm and a saturated output power of over 24dBm within the L-band while retaining the traditional EDFA's advantages of high gain and low NF.