1310 nm Raman amplifier utilizing high-power, quantum-dot pumping lasers

Abstract The Raman amplifier can be used to increase the range of 1310 nm transmission. In the paper, we present detailed studies regarding the design and performance of the 1310 nm Raman amplifier utilizing quantum-dot pumping lasers. We design and investigate performance of the QD laser based 1310 nm Raman amplifier with a single and double pump configuration, different fiber lengths and 1240/1310 nm coupler types (CWDM or circulator). The 1310 nm Raman amplifier gain as a function of wavelength is presented showing the amplification bandwidth of about 14–16 nm. Further, we achieved a gain of 17.7 dB and a noise figure of 4.5 dB in a QD-laser pumped 1310 nm Raman amplifier in a double pump configuration and 12.3 dB in a single pump configuration. Application of the 1240/1310 nm CWDM coupler allows for about 1–2 dB higher gain than circulator, however, with the potential trade off of the amplification bandwidth. We compare the 1310 nm Raman amplifier with the 1310 nm SOA, proving the comparable gain, higher saturation output power and lower noise figure of the Raman amplifier. Finally, we show that joined SOA-Raman amplifier can provide the bandwidth up to 85 nm.

[1]  M. Islam.  Raman amplifiers for telecommunications , 2002 .

[2]  Benyuan Zhu.  Entirely passive coexisting 10G-PON and GPON compatible reach extender using Raman amplification. , 2012, Optics express.

[3]  P. Winzer.  Energy-Efficient Optical Transport Capacity Scaling Through Spatial Multiplexing , 2011, IEEE Photonics Technology Letters.

[4]  T. Tokle,et al.  A Symmetric-Rate, Extended-Reach 40 Gb/s CWDM-TDMA PON With Downstream and Upstream SOA-Raman Amplification , 2012, Journal of Lightwave Technology.

[5]  H. de Waardt,et al.  Low Complexity up to 400-Gb/s Transmission in the 1310-nm Wavelength Domain , 2012, IEEE Photonics Technology Letters.

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

[7]  G. Agrawal,et al.  Raman amplification in fiber optical communication systems , 2005 .

[8]  P. Gallion,et al.  New model of noise figure and RIN transfer in fiber Raman amplifiers , 2006, IEEE Photonics Technology Letters.

[9]  R.J.W. Jonker,et al.  Experimental assessment of a praseodymium doped fiber amplifier (PDFA) for amplifier applications in the second telecommunication window , 2001 .

[10]  Paul Wright,et al.  Raman extended GPON using 1240 nm semiconductor quantum-dot lasers , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[11]  P. B. Gaarde,et al.  Multi-pump discrete Raman amplifier for CWDM system in the O-band , 2006 .

[12]  Yongbo Tang,et al.  Over 67 GHz bandwidth hybrid silicon electroabsorption modulator with asymmetric segmented electrode for 1.3 μm transmission. , 2012, Optics express.

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

[14]  Lufeng Leng,et al.  A Raman amplified GPON reach extension system using parameters of a deployed fiber. , 2012, Optics express.