This research involves a simulation of four channels coarse wavelength division multiplexing (CWDM) transceiver. The study is done on the effect of the extinction ratio(ER) of the directly modulated laser (DML) diode, the effect of using Erbium doped
fiber amplifier (EDFA) in optical fiber links on the quality factor (Q) and the bit error ratio (BER) when using different lengths of fiber. Then a comparison is made between the CWDM network using the amplifier EDFA and the same network without using the amplifier EDFA. In addition, the study is done on the effect of optical fiber length on Q with and without the amplifier EDFA, and we demonstrated the relationship between them diagrammatically.
Fibre optics have greatly developed over the past decades, making it usable in wired communication systems.
It has many advantages such as:
High channel capacity.
Interference immunity.
Low loss.
Security & Immune to intrusion.
That’s w
hy it became so popular in different types of usage.
This article discusses the security of fibre optics, proposes an intrusion detection system able to detect
different intrusion techniques, and specifies the intrusion point depending on modes and optical powers.
The restoration of the network from failure got through different
mechanisms and algorithms at different levels of network in particular
time. Recovery methods of optical network based on GMPLS Do not take
any consideration for the integration of
communication when it establish
the backup path, which can lead to greater harm, such as the failure may
occur to a link or a path in which a large number of contacts concentrated.
Also, such concentration may leads to a negative impact in terms of the
network survivability.
