The high-speed, symmetric, and guaranteed bandwidth demands for future video services have also contributed to the convergence of wired and wireless services provided by the next-generation access networks. The broad-band evolution coupled with the phenomenal growth in the Internet has precipitated intense traffic patterns in access networks (Yu, J., et al, 2009). The essay or review below describes or analyses the content, style and merit of the research article on Review of "Radio-Over-Optical-Fiber-Networks" by Yu, J., et al., (2009) Convergence of wired and wireless services is dependent upon the progress made by the next-generation access networks. In this paper the behavior of Lithium Niobate (LiNbO3) MZM is studied on various bias and extinction ratio ranges and a particular bias and extinction ratio is fixed at which the proposed ROF system gives the optimum results.ĪNALYTICAL EXPOSITION The phenomenal growth in the use of smart phones, tablets, wearables, other mobile data consuming devices, and Internet of things (IoT), etc., combined with advanced applications, now requires high capacity heterogeneous wireless networks. The performance of RoF system depends upon various parameters of Mach-Zehnder modulator (MZM) like RF bias, bias voltage, extinction ratio and insertion loss. The projected RoF system was analyzed for switching bias voltage and extinction ratio of Lithium Niobate (LiNbO3) Mach-Zehnder modulator (MZM) and from all the observations and findings it can be concluded that for the proposed system the appropriate switching bias voltage is 4V and the extinction ratio is 30 dB so as to achieve the optimum results that is maximum Q –Factor with minimum BER. LITERATURE SURVEY Kamaljit Singh Bhatia et.al In this paper, we studied to overcome the dispersion losses and degradation of signal due to power fading which a signal experiences while travelling through an optical fiber, various optical devices, Mach Zehnder modulator is introduced in the Radio over Fiber system. In Mach-Zehnder interferometers rectangular arrangement is commonly used. ![]() ![]() Advantages of MZM-Flexibility in fringe location can be provided by the Mach-Zehnder Modulator, but it is not possible with other interferometers. By changing the applied voltage on the electrode, the optical phase in each arm can be controlled. ![]() Both arms are biased with different DC voltages. Layout of Mach Zehnder modulator The RF signals are applied to the two arms of the interferometer with different phase shifts.
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