Open AccessGain‐flattened hybrid EDFA operating in C + L band with parallel pumping distribution technique
Author(s) -
AlAzzawi Alabbas A.,
Almukhtar Aya A.,
Dhar Anirban,
Paul Mukul C.,
Ahmad Harith,
Altuncu Ahmet,
Apsari Retna,
Harun Sulaiman Wadi
Publication year - 2020
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2020.0072
Subject(s) - flattening , amplifier , optical amplifier , c band , materials science , noise figure , erbium , optoelectronics , bandwidth (computing) , optics , physics , doping , telecommunications , computer science , laser , cmos , composite material
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.