Gain clamping performance of Hafnia–bismuth–erbium co-doped fibre amplifier using lasing controlled structure with FBG. Issue 8 (4th May 2021)

• Record Type: Journal Article
• Authors: Zulkipli, N.F.; Sadik, S.A.; Durak, F.E.; Paul, M.C.; Altuncu, A.; Harun, S.W.
• Is Part Of: Journal of modern optics. Volume 68:Issue 8(2021)
• Page Start: 457
• Page End: 462
• Publication Date: 2021-05-04
• Subjects: Hafnia-bismuth-erbium co-doped fibre -- optical fibre amplifier -- gain clamping -- FBG; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2021.1912424
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract : In this study, the gain clamping performance of Hafnia-bismuth-erbium co-doped fibre amplifier (HB-EDFA) using a lasing controlled structure with fibre Bragg grating (FBG) pair is presented. First, the gain and noise figure (NF) characteristics of a bidirectionally pumped HB-EDFA with very short lengths of heavily doped fibre are presented regarding its critical design parameters such as HB-EDF length, pump power, input signal power and signal wavelength. Then, the gain clamping performance of a bidirectionally pumped HB-EDFA having a C-band FBG pair with Bragg wavelengths of 1534 and 1542 nm is experimentally analysed. A good gain clamping capability was obtained using the proposed bidirectionally HB-EDFA design which has resulted in a dynamic signal input power range of 25 dB at 16 dB signal gain for 1.6 m HB-EDF length, and a wider dynamic signal input power range of 30 dB at 10 dB signal gain for 1.1 m HB-EDF length.