[1. Cisco Inc. (2018). Cisco visual networking index: Forecast and trends, 2017–2022. White paper.]Search in Google Scholar
[2. Hamaide, J.P. (2015). Optical networks: recent breakthroughs and future challenges. France: Alcatel-Lucent Bell Labs CominLabs Days.]Search in Google Scholar
[3. Morita, I., & Peng, W.R. (2012). High capacity WDM transmission using terabit super-channels. In 38th European Conference and Exhibition on Optical Communications, 16–20 September 2012, Amsterdam, Netherlands, DOI:10.1364/ECEOC.2012.Th.2.C.3.10.1364/ECEOC.2012.Th.2.C.3]Open DOISearch in Google Scholar
[4. Digonnet, M. J. F. (2001). Rare-earth-doped fiber lasers and amplifiers (2nd ed.). USA: CRC Press.10.1201/9780203904657]Search in Google Scholar
[5. Putrina, J., Olonkins, S., & Bobrovs, V. (2017). Investigation of amplification span length impact on the quality of the signal in WDM transmission systems with erbium-doped fiber amplifiers. In 2017 Progress in Electromagnetics Research Symposium (PIERS 2017), 22–25 May 2017, St. Petersburg, Russia. DOI:10.1109/PIERS.2017.826203310.1109/PIERS.2017.8262033]Open DOISearch in Google Scholar
[6. Becker, P.C., Olsson, N.A., & Simpson, J.R. (1999). Erbium-doped fiber amplifiers: Fundamentals and technology. USA: Academic Press.]Search in Google Scholar
[7. Putrina, J., & Bobrovs, V. (2016). Evaluation of erbium doped fiber amplifier application in fiber optics transmission systems. In 2016 Progress in Electromagnetics Research Symposium (PIERS 2016), 8–11 August 2016, Shanghai, China. DOI:10.1109/PIERS.2016.773542810.1109/PIERS.2016.7735428]Open DOISearch in Google Scholar
[8. Sun, Y., Srivastava, A. K., Zhou, J., & Sulhoff, J.W. (1999). Optical fiber amplifiers for WDM optical networks. Bell Labs Technical Journal, 4(1), 187–206.10.1002/bltj.2153]Search in Google Scholar
[9. Trifonovs, I., Bobrovs, V., & Ivanovs, G. (2011). Optimization of a standard bidirectional DWDM solution. Electronics and Electrical Engineering, 115(9), 37–40.10.5755/j01.eee.115.9.745]Search in Google Scholar
[10. Synopsys Inc. (2014). Synopsys RSoft solutions. Product Catalogue.]Search in Google Scholar
[11. Ivanovs, G., Bobrovs, V., Olonkins, S., Alsevska, A., Gegere, L., & Parts, R. (2014). Application of the erbium-doped fiber amplifier in wavelength division multiplexing (WDM) transmission systems. International Journal of Physical Sciences, 9(5), 91–101.]Search in Google Scholar
[12. Putrina, J. (2016). EDFA characteristics and working principle evaluation in FOTS. M.S. thesis. Riga: Riga Technical University.]Search in Google Scholar
[13. Berezins, S., & Bobrovs, V. (2013). EDFA application research in WDM communication systems. Electronics and Electrical Engineering, 19(2), 92–96.]Search in Google Scholar