Title :
Enhanced Secure Strategy for OFDM-PON System by Using Hyperchaotic System and Fractional Fourier Transformation
Author :
Cheng, Ming ; Deng, L. ; Wang, Xiongfei ; Li, Huaqing ; Tang, M. ; Ke, Cangming ; Shum, Ping ; Liu, Deming
Author_Institution :
Next Generation Internet Access Nat. Eng. Lab. (NGIA), Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
We propose and experimentally demonstrate a scheme whereby hyperchaos and fractional Fourier transform (FrFT) techniques are integrated in an orthogonal frequency-division multiplexing (OFDM) passive optical network system. In our experiment, both security issues and transmission performance are investigated under an overall frame, and 7.64-Gb/s 16-quadrature-amplitude-modulation OFDM data with a four-level encryption scheme are successfully transmitted over a 25-km standard single-mode fiber. The results show that the system security and the transmission performance can be improved simultaneously. Moreover, the proposed scheme allows a flexible adjustment between the safety and the transmission performance according to the actual requirements.
Keywords :
Fourier transform optics; OFDM modulation; chaos; passive optical networks; quadrature amplitude modulation; security; 16-quadrature-amplitude-modulation OFDM data; OFDM-PON system; bit rate 7.64 Gbit/s; distance 25 km; enhanced secure strategy; four-level encryption scheme; fractional Fourier transformation; hyperchaotic system; orthogonal frequency-division multiplexing passive optical network system; security issues; standard single-mode fiber; transmission performance; Chaotic communication; Encryption; OFDM; Passive optical networks; Orthogonal frequency division multiplexing (OFDM); chaos; fractional Fourier transform (FrFT); optical communication; passive optical network (PON);
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2014.2363427
