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The noise figure and gain improvement of double‐pass C‐band EDFA
Author(s) -
Yucel Murat,
Aslan Zuhal
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27854
Subject(s) - circulator , noise figure , amplified spontaneous emission , optical amplifier , erbium doped fiber amplifier , optics , physics , microwave , optoelectronics , optical circulator , wavelength division multiplexing , noise (video) , erbium , c band , automatic gain control , materials science , amplifier , engineering , optical fiber , doping , telecommunications , computer science , laser , cmos , wavelength , artificial intelligence , image (mathematics)
In this study, the noise figure (NF) improvement is demonstrated in double‐pass C‐band erbium‐doped fiber amplifier. It is used the short length of unpumped erbium doped fiber (EDF) within a circulator‐based loop mirror which is reduced amplified spontaneous emission (ASE). The unpumped EDF attenuates part of the ASE that is then reflected back for a double pass configuration which in turn, helps to improve the gain and NF. The proposed configuration has lower NF and higher gain than conventional double pass scheme. Thus, it can be easily applied for practical application. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2525–2528, 2013