RIN Mitigation and Transmission Performance Enhancement With Forward Broadband Pump

We demonstrate that using a broadband, first order, and coherent pump laser enables effective and efficient forward-pumped distributed Raman amplification for long-haul transmission systems, thanks to the simultaneous suppression of ASE noise and RIN-related penalty. We show in both experiments and simulation that this scheme extends the reach of <inline-formula> <tex-math notation="LaTeX">$10\times120$ </tex-math></inline-formula> Gb/s DP-QPSK WDM transmission by a minimum of 50%, compared with low RIN Bi-doped fibre laser and other commercially available pump lasers. Moreover, it requires very low forward pump power, and maintains uniform/symmetric signal power distribution which allows effective nonlinearity compensation.

[1]  S. Turitsyn,et al.  Nonlinear Inverse Synthesis for Optical Links With Distributed Raman Amplification , 2015, Journal of Lightwave Technology.

[2]  G. Roosen,et al.  Relative intensity noise transfer of large-bandwidth pump lasers in Raman fiber amplifiers , 2006 .

[3]  Polina Bayvel,et al.  4 Tb/s Transmission Reach Enhancement Using 10 × 400 Gb/s Super-Channels and Polarization Insensitive Dual Band Optical Phase Conjugation , 2016, Journal of Lightwave Technology.

[4]  Do-il Chang,et al.  Pump-to-signal cross-polarization scattering in coherent dual-polarized systems with forward Raman amplification , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[5]  M. A. Iqbal,et al.  Evaluation of Long-Haul Coherent Transmission Performance Using Low RIN Forward Raman Pump , 2016, 2016 Asia Communications and Photonics Conference (ACP).

[6]  S. Turitsyn,et al.  Simultaneous spatial and spectral transparency in ultralong fiber lasers. , 2008, Physical review letters.

[7]  K. Brar,et al.  Quasi-Constant Signal Power Transmission , 2002, 2002 28TH European Conference on Optical Communication.

[8]  Yunjiang Rao,et al.  High Power Random Fiber Laser With Short Cavity Length: Theoretical and Experimental Investigations , 2015, IEEE Journal of Selected Topics in Quantum Electronics.

[9]  S. M. Bilal,et al.  Pump RIN-induced impairments in unrepeatered transmission systems using distributed Raman amplifier. , 2015, Optics express.

[10]  J. Bromage,et al.  Raman amplification for fiber communications systems , 2003, Journal of Lightwave Technology.

[11]  Wayne Pelouch,et al.  Raman amplification: An enabling technology for high-capacity, long-haul transmission , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

[12]  M. A. Iqbal,et al.  Transmission performance improvement using random DFB laser based Raman amplification and bidirectional second-order pumping. , 2016, Optics express.

[13]  A. Sano,et al.  Co-Propagating Dual-Order Distributed Raman Amplifier Utilizing Incoherent Pumping , 2017, IEEE Photonics Technology Letters.

[14]  M. Tan,et al.  Evaluation of 100G DP-QPSK long-haul transmission performance using second order co-pumped Raman laser based amplification. , 2015, Optics express.

[15]  C. Fludger,et al.  Pump to signal RIN transfer in Raman fiber amplifiers , 2001 .

[16]  V. Mashinsky,et al.  Bi-doped fiber laser for telecom applications , 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

[17]  Shu Namiki,et al.  Broadband flat-noise Raman amplifier using low-noise bidirectionally pumping sources , 2001, Proceedings 27th European Conference on Optical Communication (Cat. No.01TH8551).

[18]  Deming Liu,et al.  Experimental Verification of Relative Phase Noise in Raman Amplified Coherent Optical Communication System , 2016, Journal of Lightwave Technology.

[19]  S. Papernyi,et al.  Third-order cascaded Raman amplification , 2002, Optical Fiber Communication Conference and Exhibit.