Gain‐flattened hybrid EDFA operating in C + L band with parallel pumping distribution technique. Issue 6 (1st December 2020)

• Record Type: Journal Article
• Authors: Al‐Azzawi, Alabbas A.; Almukhtar, Aya A.; Dhar, Anirban; Paul, Mukul C.; Ahmad, Harith; Altuncu, Ahmet; Apsari, Retna; Harun, Sulaiman Wadi
• Is Part Of: IET optoelectronics. Volume 14:Issue 6(2020)
• Page Start: 447
• Page End: 451
• Publication Date: 2020-12-01
• Subjects: bismuth -- optical pumping -- optical fibre amplifiers -- erbium -- hafnium -- zirconium compounds -- laser noise; parallel pumping distribution technique -- two‐stage configuration -- multiwavelength input source -- amplifier complexity -- input signal powers -- gain‐flattened hybrid EDFA -- C + L band hybrid erbium‐doped fibre amplifier -- 0.5‐m long hafnium bismuth erbium codoped fibre -- zirconia‐based EDF -- noise figure -- noise figure 4.7 dB -- noise figure 6.4 dB -- noise figure 5.4 dB -- gain 10.9 dB -- gain 15.5 dB -- gain 19.2 dB -- size 0.5 m -- size 4 m -- ZrO2; Optoelectronics -- Periodicals; 621.36
• DOI: 10.1049/iet-opt.2020.0072
• Languages: English
• ISSNs: 1751-8768

Abstract

Abstract : A novel C + L band hybrid erbium‐doped fibre amplifier (EDFA) using a two‐stage configuration was proposed and demonstrated experimentally. The amplifier is composed of a 0.5‐m long hafnium bismuth erbium co‐doped fibre (EDF) to provide gain within the C‐band and a 4‐m long zirconia‐based EDF to provide gain within the L‐band. The proposed amplifier was examined based on the multi‐wavelength input source. A parallel pumping distribution technique was used to mitigate the amplifier complexity. The C + L band amplifier achieved a gain flattening of over 55 nm bandwidth for the three levels of the input powers. A gain‐flattening of roughly 10.9, 15.5, and 19.2 dB were obtained, respectively, for the input signal powers of −5, −10, and −15 dBm. An average noise figure of 6.4, 5.4, and 4.7 dB was achieved, respectively, for the input signal powers of −5, −10, and −15 dBm.