A full-duplex radio-over-fiber (ROF) transport system employing semiconductor optical amplifier (SOA)-based optical single sideband (SSB) modulation technique is proposed and demonstrated. For our proposed approach, it is relatively simple to implement as it requires only one SOA to generate optical SSB signal. Over an-80 km single-mode fiber (SMF) transmission, low bit error rate (BER), clear eye diagram, and low third-order intermodulation distortion to carrier ratio (IMD3/C) were achieved. Our proposed full-duplex ROF transport systems are suitable for the long-haul microwave optical links.
2. Lin, C. T., J. Chen, P. C. Peng, C. F. Peng, W. R. Peng, B. S. Chiou, and S. Chi, "Hybrid optical access network integrating fiber-to-the-home and radio-over-fiber systems," IEEE Photon. Technol. Lett., Vol. 19, 610-612, 2007.
3. Oraizi, H. and S. Hosseinzadeh, "A novel marching algorithm for radio wave propagation modeling over rough surfaces," Progress In Electromagnetics Research, Vol. 57, 85-100, 2006.
4. Prat, J., M. C. Santos, and M. Omella, "Square root module to combat dispersion-induced nonlinear distortion in radio-over-fiber systems," IEEE Photon. Technol. Lett., Vol. 18, 1928-1930, 2006.
5. Blais, S. R. and J. Yao, "Optical single sideband modulation using an ultranarrow dual-transmission-band fiber bragg grating," IEEE Photon. Technol. Lett., Vol. 18, 2230-2232, 2006.
6. Lu, H. H., S. J. Tzeng, C. Y. Chen, and H. C. Peng, "CSO/CTB performances improvement by using optical SSB filter at the receiving site," IEEE Trans. Commun., Vol. 53, 572-575, 2005.
7. Sung, H. K., E. K. Lau, and M. C. Wu, "Optical single sideband modulation using strong optical injection-locked semiconductor lasers," IEEE Photon. Technol. Lett., Vol. 19, 1005-1007, 2007.
8. Smith, G. H., D. Novak, and Z. Ahmed, "Overcoming chromaticdispersion effects in fiber-wireless systems incorporating external modulator," IEEE Trans. Microwave Theory Tech., Vol. 45, 1410-1415, 1997.
9. Davies, B. and J. Conrad, "Hybrid modulator structure for subcarrier and harmonic subcarrier optical single sideband," IEEE Photon. Technol. Lett., Vol. 10, 600-602, 1998.
10. Lee, U. S., H. D. Jung, and S. K. Han, "Optical single sideband signal generation using phase modulation of semiconductor optical amplifier," IEEE Photon. Technol. Lett., Vol. 16, 1373-1375, 2004.
11. Lu, H. H., W. J.Wang, and W. S. Tsai, "CSO/CTB performances improvement in a bi-directional DWDM CATV system," IEEE Trans. Broadcast., Vol. 50, 377-381, 2004.