Abstract
In this work, we proposed Stimulated Brillouin Scattering (SBS) in an optical generation of millimeter waves (mm-waves) for radio over fiber (RoF) system with the transmission of 2.5 Gbps data rate. SBS method is achieved by imposing continuous wave (CW) laser in a single mode optical fiber (SMF) via Mach-Zehnder Modulator (MZM) with Erbium-Doped Fiber Amplifier (EDFA) and two pump lasers. Mm-waves signal of 80 GHz was generated from a 40 GHz radio frequency (RF) synthesizer. Simulation result and the analysis comparison of effective light power are investigated with different SMF loop length from 20 km until 120 km. The performance of SBS system is analysed and the generated of millimeter waves signal can be transmit with length up to 120 km based on eye pattern and Bit Error Rate (BER) curve.
Highlights
Radio-over-Fiber (RoF) is a fundamental property of communication which light propagates by radio frequency (RF) and transmitted over an optical fiber link [1]
The model of Stimulated Brillouin Scattering (SBS) system is constructed as shown in table 2, whereas these output signal is measured by the eye diagram analyser that indicate which is best performance of the system can be determine by the wide eye opening
As can be seen in fig. 2(a-f), for transmitted signal over 20 km, the eye pattern shows both techniques are in good performance but when optical signal mm-waves propagating over 50 km to 100 km distances, the outline of the simulated eye diagram gradually decreases without optical amplifier technique
Summary
Radio-over-Fiber (RoF) is a fundamental property of communication which light propagates by radio frequency (RF) and transmitted over an optical fiber link [1]. Optical generation of mmwaves signals is one of the method that would execute the RoF communication system[3]. Mm-waves can be named electromagnetic spectrum that ranges between 30 GHz to 300 GHz which capable to overcome the issue of spectral congestion at lower frequency ranges[4]. Over the past few years, many optical generation of mmwaves signal approaches have been employed. These approaches comes with advantages and drawbacks as depicted in table 1
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