Quantum key distribution for 10 Gb/s dense wavelength division multiplexing networks

Fault Tolerant Dense Wavelength Division Multiplexing Optical Transport Networks

Design of fault tolerant dense wavelength division multiplexing (DWDM) backbones is a major issue for service provision in the presence of failures. The problem is an NP-hard problem. This paper presents a genetic algorithm based approach for designing fault tolerant DWDM optical networks in the presence of a single link failure. The working and spare lightpaths are encoded into variable length...

Quadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions

This paper proposes an analytical model for evaluating the performance of dense wavelength division multiplexing (DWDM) for all optical orthogonal frequency division multiplexing (AO-OFDM) optical wireless channel. The investigated performance for proposed system is evaluated for the parameters  bit error rate (BER) and Q factor .The constellation diagrams, and bit error rate (BER) of the recei...

Advanced Modulation Formats for Ultra-Dense Wavelength Division Multiplexing

Fiber-wireless networks incorporating wavelength division multiplexing

Broadband wireless access operating in the microwave and millimeter-wave frequency windows has been actively investigated for future ultra broadband communications. The drastic increase in the throughout of each base station in these systems necessitates the use of an optical fiber backbone to provide broadband interconnections between the central office and all the antenna base stations. With ...

High Capacity Dense Wavelength Division Multiplexing Optical Local Area Network

We propose a new optical Local Area Network (LAN) that exhibits high total capacity and enables the connection of a great number of nodes. It is based on the combined advantages of coherent techniques and Frequency Division Multiplexing (FDM). The network topology is a passive star with a shared local oscillator that allows simple emission and detection schemes.