@incollection{Choudhury18,
author = {Pankaj Kumar Choudhury},
title = {Introductory Chapter: A Revisit to Optical Amplifiers},
booktitle = {Optical Amplifiers},
publisher = {IntechOpen},
address = {Rijeka},
year = {2018},
editor = {Pankaj Kumar Choudhury},
chapter = {1},
doi = {10.5772/intechopen.78671},
url = {https://doi.org/10.5772/intechopen.78671}
}