Open AccessCoarse WDM in Metropolitan Networks: Challenges, Standards, Applications, and Future Role
Author(s) -
Mustafa Maad Hamdi,
Lukman Audah,
Shah Samiur Rashid,
Mohammad Abdulrahman Аl-Мashhadani
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1530/1/012062
Subject(s) - wavelength division multiplexing , telecommunications , metropolitan area , transmission (telecommunications) , computer science , capital cost , multiplexing , electronic engineering , engineering , wavelength , electrical engineering , materials science , optoelectronics , geography , archaeology
Coarse Wavelength Division Multiplexing (CWDM) denotes a technology of diaphanous transport which aids to transmit simultaneously a large number of services across a single optical fiber. This technology relies on the usage of optical channels which are 20 nm from each other. These channels are employed in the CFO OPX products, which ranged from 1270 nm until 1610 nm, had been set in ITU-T G - 694.2 recommendations. ITU-T managed to determine 18 optical channels together, though 16 only are used in reality, in the case of using the two lowest channels which are avoided because of the excessive-high attenuation of glass. However, the review study presented in this paper deals with the CWDM technique as the best choice in decreasing capital expenditure after taking into consideration the simplicity of design, the capability of expanded transmission, low cost of components and reduction in operational cost. The paper also focused on the standards, applications and future role of the CWDM technique.