Chaotic signals provide us security by exploiting the useful idea of encrypting message at the physical layer but there is also need for more and more bandwidth. We can provide security and bandwidth at same instance by using Dense Wavelength Division Multiplexed (DWDM) chaotic communication. Chaotic synchronization is vital for chaos based system which is greatly effected due to fiber polarization mode dispersion (PMD), non-linearities and dispersion. In this work we have analyzed the combined effect of polarization mode dispersion and non-linearities on 2 channel DWDM chaotic system.

For many years, Radio-over-Fiber (RoF) Systems are extremely interesting and evolving technology for its applications in wireless broadband communication. The need for today is to develop low-cost base stations (BS) for RoF systems to make them practical for commercial deployment. The proposed scheme in this work solves this issue in which FSK signal is generated in the down-link very efficiently by using couplers and laser sources. The generated signal is of very high frequency and simplifies the architecture, as no electrical oscillator is required. Before that signal generation in ASK...