25-Gb/s OFDM 60-GHz Radio Over Fiber System Based on a Gain Switched Laser

A 25-Gb/s OFDM 60-GHz radio over fiber (RoF) transmission system employing a gain switched DFB laser for millimeter-wave generation is demonstrated. Transmission performance below the 7% FEC limit is achieved over 50 km of fiber initially by employing precompensation. This precompensation overcomes phase noise caused by the optical phase decorrelation induced by chromatic dispersion on the two optical channels separated by 60 GHz. An externally injected gain switched laser is subsequently employed to eradicate the need for the precompensation, thus reducing phase noise and increasing the tolerance to the induced time delay between the optical tones. Transmission performance below the 7% limit is achieved over 25 km of fiber with 2-m wireless transmission in this case.

[1]  F. van Dijk,et al.  Chromatic Dispersion in 60 GHz Radio-Over-Fiber Networks Based on Mode-Locked Lasers , 2011, Journal of Lightwave Technology.

[2]  Sylwester Latkowski,et al.  40nm wavelength tunable gain-switched optical comb source , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[3]  R. Llorente,et al.  Impact and reduction of fibre nonlinearities in a 25 Gb/s OFDM 60 GHz radio over fibre system , 2014, Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on.

[4]  Roberto Llorente,et al.  60 GHz Radio Over Fiber System Based on Gain-Switched Laser , 2014, Journal of Lightwave Technology.

[5]  Vidak Vujicic,et al.  Phase noise analysis of injected gain switched comb source for coherent communications. , 2014, Optics express.

[6]  T. Kawanishi,et al.  19x10-GHz electro-optic ultra-flat frequency comb generation only using single conventional Mach-Zehnder modulator , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[7]  Chia-Chien Wei,et al.  Phase noise suppression of optical OFDM signals in 60-GHz RoF transmission system. , 2011, Optics express.

[8]  V. Ferrero,et al.  Narrow Linewidth CW Laser Phase Noise Characterization Methods for Coherent Transmission System Applications , 2008, Journal of Lightwave Technology.

[9]  R Phelan,et al.  Generation of Coherent Multicarrier Signals by Gain Switching of Discrete Mode Lasers , 2011, IEEE Photonics Journal.

[10]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[11]  Roberto Llorente,et al.  Chromatic Dispersion-Induced Optical Phase Decorrelation in a 60 GHz OFDM-RoF System , 2014, IEEE Photonics Technology Letters.

[12]  Liam P. Barry,et al.  Effective phase noise suppression in externally injected gain switched comb source for coherent optical communications , 2013 .

[13]  Jianjun Yu,et al.  Experimental Demonstration of 48-Gb/s PDM-QPSK Radio-Over-Fiber System Over 40-GHz mm-Wave MIMO Wireless Transmission , 2012, IEEE Photonics Technology Letters.

[14]  L. B. Mercer,et al.  1/f frequency noise effects on self-heterodyne linewidth measurements , 1990 .

[15]  V. Vujicic,et al.  25 Gb/s OFDM 60 GHz radio over fibre system using an externally injected gain switched distributed feedback laser , 2014, 2014 The European Conference on Optical Communication (ECOC).

[16]  L. P. Barry,et al.  Delayed Self-Heterodyne Phase Noise Measurements With Coherent Phase Modulation Detection , 2012, IEEE Photonics Technology Letters.

[17]  B. Cabon,et al.  Investigation on the Phase Noise and EVM of Digitally Modulated Millimeter Wave Signal in WDM Optical Heterodyning System , 2012, Journal of Lightwave Technology.

[18]  P.F.M. Smulders,et al.  Exploiting the 60 GHz band for local wireless multimedia access: prospects and future directions , 2002, IEEE Commun. Mag..