Study on 4PAM Radio over Fiber System Using Self-Mixing Technique - Optics and Photonics Journal

OPJ > Vol.6 No.8, August 2016

Study on 4PAM Radio over Fiber System Using Self-Mixing Technique ()

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DOI: 10.4236/opj.2016.68B014 1,358 Downloads 2,251 Views Citations

Author(s)

Luo Chen, Yufeng Shao^*, Fuping Chen, Shilu Shen

Affiliation(s)

College of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, China.

ABSTRACT

In this paper, a simplified optical millimeter-wave generated by two optical sidebands beating together in a 60 GHz radio over fiber (RoF) system with 10 Gbit/s 4-pulse amplitude modulation (4 PAM) transmission signal is proposed and simulated. 10 Gbit/s electrical 4 PAM signals modulated are conveyed over the length of 40 km standard single mode fiber (SMF) and recovered via the self-mixing technique after detecting directly at the receiver. Graphs of time-domain wave, frequency-domain and optical spectrum are measured out in different period, and the comparison of error vector magnitude curves of NRZ and 4 PAM signals under the different length of fiber is accomplished. The capacity of 4 PAM modulation is higher, though NRZ performs better than 4 PAM selected in RoF system within 80 km of fiber length as shown in the simulation results.

KEYWORDS

Optical Communication, 4PAM, RoF, Self-Mixing

Share and Cite:

Chen, L. , Shao, Y. , Chen, F. and Shen, S. (2016) Study on 4PAM Radio over Fiber System Using Self-Mixing Technique. Optics and Photonics Journal, 6, 83-88. doi: 10.4236/opj.2016.68B014.

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