Readme file for the data submitted towards the conference paper titled as "High gain Bi-doped all fiber amplifier for O-band DWDM optical fiber communication" The X and Y data of Data for DOI.xlsx file consist of data of plots that are present in the paper titled as above. Fig.2.a file containes the data of Amplified spontaneous emission (ASE) spectra of 152m long BDF in single and double pass configuration with a pump power of 763mW (1270nm-385mW, 1240nm-378mW). Fig.2.b file contains the data of gain and NF characteristics for -10 dBm input signal, of 152m long BDF in single and double pass configuration with a pump power of 763mW (1270nm-385mW, 1240nm-378mW). Fig.2.c file contains the data of gain with pump power at 1340nm for -10dBm input signal in double pass configuration of 152m long BDF. Fig.2.d file contains the data of amplified spectra with a pump power of 763mW, for -10dBm input signal in double pass configuration of 152m long BDF.