Abstract
Today’s high capacity dense wavelength division multiplexed (DWDM) systems required the flattened gain spectra with large gain bandwidth. This required properly broadening the gain bandwidth of the optical amplifiers with proper amplification of the signals. In order to achieve this, a competent flat gain hybrid optical amplifier is demonstrated that comprised of a erbium doped fiber amplifier (EDFA) and Raman amplifier with multi-wavelength backward pumping scheme. Attempts were done in order to design a (E-R) hybrid optical amplifier (HOA) for 16 channels, 20 Gbps DWDM systems at reduced channel spacing of 0.2 nm and also compared with conventional amplifiers. The performance of the system is evaluated on the behalf of different parameters viz. gain, noise figure, output power, Optical Signal to Noise Ratio (OSNR). Numerous parameters of EDFA and Raman amplifiers are optimize to find the gain spectrum of E-R HOA. It is found that E-R HOA provides better gain uniformity with noise figure less than 5 dB. It is also found that for wavelength range 1553.13–1556.15 nm, a uniform gain of 38.85 dB is achieved for input power of “0” dB with noise figure variation of 0.29 dB without using any gain flattering scheme. The output power and OSNR of all the channels is measured at 0 dBm input power and found maximum power and SNR at 1556.15 nm channel frequency is 26.44 dBm and 40.71 dB respectively.
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References
H. Suzuki, M. Fujiwara, K. Iwatsuki, Application of super-DWDM technologies to terrestrial terabit transmission systems. J. Lightwave Technol. 24(5), 1998–2005 (2006)
S.A. Rashmi, V. Sharma, Performance evaluation of different hybrid optical amplifiers for 64 × 10, 96 × 10 and 128 × 10 Gbps DWDM transmission system. Int. J. Comput. Sci. Inf. Technol. 5(6), 7199–7203 (2014)
V. Bobrovs, S. Olonkins, A. Alsevska, L. Gegere, G. Lvanovs, Comparative performance of Raman-SOA and Raman-EDFA hybrid optical amplifiers in DWDM transmission systems. Int. J. Phys. Sci. 8(39), 1898–1906 (2013)
S. Singh, R.S. Kaler, Performance evaluation and characterization of hybrid optical amplifiers for DWDM systems at ultra narrow channel spacing. J. Russ. Laser Res. 35(2), 211–218 (2014)
M.N. Islam, Raman amplifier for Telecommunications 2: Physical Principles (Springer, New York, 2004), p. 422
H. Singh, S. Singh, Performance analysis of hybrid optical amplifiers in 120 × 10 Gbps WDM optical network with channel spacing of 50 GHz, in Conferences of Advances in Computing Communication and Information Technology (CCIT), pp. 55–58 (2014)
K. Inoue, Gain clamped fiber amplifier with a loop mirror configuration. IEEE Photonics Technol. Lett. 11(5), 533–535 (1999)
K.C. Reichmann, P.P. Iannone, M. Birk, N.J. Frigo, D. Barbier, C. Cassagnettes, T. Garret, A. Verlucco, S. Perrier, J. Philipsen, An eight wavelength 160 km transparent metro WDM ring network featuring cascaded erbium-doped waveguide amplifiers. IEEE Photonics Technol. Lett. 13(10), 1130–1132 (2001)
H. Masuda, S. Kawai, K. Aida, Ultra-wideband hybrid amplifier comprising distributed Raman amplifier and erbium doped fibre amplifier. Electron. Lett. 34(13), 25 (1998)
S. Singh, R.S. Kaler, Placement of hybrid optical amplifier in optical fiber communication system. Optik-Int. J. Light. Electron. Opt. 123(18), 1636–1639 (2012)
J. Kaur, N. Sharma, Effects of amplified spontaneous emission on NRZ, RZ and CSRZ modulation format in single channel lightwave system, in IEEE, ETNCC, pp. 61–64 (2011)
M.C. Paul, S.W. Harun, N.A.D. Huri, A. Hamzah, S. Das, M. Pal, S.K. Bhadra, H. Ahmad, S. Yoo, M.P. Kalita, A.J. Boyland, J.K. Sahu, Wideband EDFA based on erbium doped crystalline zirconia yttria alumino silicate fiber. J. Light-Wave Technol. 28(20), 2919–2924 (2010)
V. Bobrovs, S. Olonkins, A. Alsevska, L. Gegere, G. Lvanovs, Comparative performance of Raman-SOA and Raman-EDFA hybrid optical amplifiers in DWDM transmission system. Int. J. Phys. Sci. 8(39), 1898–1906 (2013)
S. Singh, R.S. Kaler, Flat gain L-band Raman-EDFA hybrid optical amplifier for dense wavelength division multiplexed system. IEEE Photonics Technol. Lett. 25(3), 250–252 (2013)
S. Singh, R.S. Kaler, Performance evaluation of 64 × 10 Gbps and 96 × 10 Gbps DWDM system with hybrid optical amplifier for different modulation formats. Optik-Int. J. Light. Electron. Opt. 123(24), 2199–2203 (2012)
S. Simranjit Singh, R.S. Kaler, Hybrid optical amplifiers for 64 × 10 Gbps dense wavelength division multiplexed system. Optik-Int. J. Light. Electron. Opt. 124(12), 1311–1313 (2013)
S. Singh, R.S. Kaler, A. Singh, Performance evaluation of EDFA, Raman and SOA optical amplifier for WDM systems. Optik-Int. J. Light. Electron. Opt. 124(2), 95–101 (2013)
R. Kaur, R. Randhawa, R.S. Kaler, Performance evaluation of optical amplifier for 16 × 10, 32 × 10 and 64 × 10 Gbps WDM system. Optik-Int. J. Light. Electron. Opt. 124(8), 693–700 (2013)
M. Sharma, V. R. Sharma, Gain flattening of EDFA in C-band using RFA for WDM application, in IEEE, 2nd International Conference on Signal Processing and Integrated Networks (SPIN), pp. 346–351 (2015)
D. Malik, K. Pahwa, A. Wason, Performance optimization of SOA, EDFA, Raman and hybrid optical amplifiers in WDM network with reduced channel spacing of 50 GHz. Optik-Int. J. Light. Electron. Opt. 127(23), 11131–11137 (2016)
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Malik, D., Kaushik, G. & Wason, A. Performance optimization of hybrid optical amplifier for dense wavelength division multiplexed system. J Opt 47, 235–242 (2018). https://doi.org/10.1007/s12596-017-0439-5
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DOI: https://doi.org/10.1007/s12596-017-0439-5