ABSTRACT
Nowadays communication capacity demands in transport networks are growing rapidly. This growth is propelled mainly by an increase of multimedia traffic in the network and now further accelerated by mobile devices, smartphones, and tablets, enabling Internet access to be consumed more expediently via network connections anywhere, anytime. The advances in optical orthogonal frequency division multiplexing (OFDM) technology has enabled optical networks to compress more data through fiber optic cables by splitting carrier bandwidth frequency to multichannel carriers and optical frequency combs as compared to a regular fiber optic link. By using micro/nano devices, the design of a frequency comb generator can have new interesting aspects. However, many researchers have proposed and described the generation of optical frequency combs in various techniques [1-5] and reported the explication used for next generation communication systems in various applications such as radio-over-fiber networks with broadband wireless access [6,7], monitoring of optical intensity for in-orbit measurement response [8], stable laser development for a laser clock [9], and high speed and high spectral efficiency optical transmission for optical OFDM systems [10]. The survivability of highcapacity optical communication networks, which is important for next generation communication systems, due to interruption of service for even short duration time may be ushering in disastrous consequences, if the cost of failure is high enough. Redundancy is a common approach to improve the reliability and availability of the system. Hence, various types of redundancy mechanisms have been developed against network element failures and to increase the survivability of the network systems, for instance, study of unavailability in failure independent part protecting [11], paradigm of network segment protecting [12], graph partitioning technique for improved protection scalability in optical networks [13], and heuristic algorithms for the planning of survivable long-reach optical networks [14]. In addition to nanoscale waveguides, optical interactions and wave filtering with a nanoslit structure behavior are used [15,16], due to a very small device and guided light with very low losses, which can be useful for on-chip optical interconnects and integrated optical circuits.
