Performance evaluation and comparative study of novel high and flat gain C + L band Raman + EYDFA co-doped fibre hybrid optical amplifier with EYDFA only amplifier for 100 channels SD-WDM systems

Erbium-ytterbium co-doped photonic crystal fiber amplifier supporting amplification for orbital angular momentum

“…In 2010, Zhou [18] used an Er 3+ -Yb 3+ co-doped PCF as gain medium, effectively reduced the noise and improved the properties of amplifier. In 2019, Anurupa et al [19] optimized the erbium-ytterbium co-doped fiber amplifier (EYDFA) performance in C and L bands (L-band: 1565 nm-1625 nm), and achieved a gain of 41.8 dB. In 2021, Supe et al [20] proposed an EYDFA with gain of 19.7 dB-28.3 dB and NF of 3.7 dB-4.2 dB.…”

Novel flattened gain using RAMAN-Erbium doped silica fiber hybrid optical amplifier for super dense wavelength division multiplexing system

“…In this way a very advanced optical amplifier, erbium doped silica fiber optical amplifier (EDSFA) is investigated and has the right answer for amplified spontaneous emission (ASE), cross gain modulation (XGM), and four wave mixing (FWM) crosstalk (Chen et al, 2018;Huang et al, 2019;Qasaimeh et al, 2017). Its remarkable outcome in terms of flat gain, noise figure with acceptable population inversion is recorded for L-band (Cai et al, 2015;Singh et al, 2014;Anurupa et al, 2019;Galdino et al, 2019). Different pumping couplers have been presented in the literature to increase the carrier concentration in conduction band (Hill et al, 1990;Scobey et al, 1996) for EDSFA.…”