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Free Space Optics (FSO) is a technology able to provide line of sight wireless high-bandwidth digital communication links between remote sites. Therefore it is a key solution for addressing the last hundred meters of broadband requirements. For enhancing the capacity of optical wireless links, DWDM transmission can be used. In this work, 10 Gb/s and 40 Gb/s bit rates have been used in a DWDM fully...
There are many possible practical ways to enhance wireless ZigBeetrade sensor networks with optical highways, like increasing the effective operational area, achieving greater robustness by introducing redundant interconnections, doing remote monitoring or increasing the security of a network. This article examines these usage scenarios with regard to optical and network performance.
WDM passive optical network with a simultaneous wireline/wireless data transmission in downlink and a wavelength reuse using a reflective semiconductor optical amplifier (RSOA) in uplink was proposed and experimentally demonstrated. This proposed scheme uses a Mach-Zehnder modulator (MZM) in the central office (CO) and a RSOA in the optical network unit (ONU). We verified the feasibility of the proposed...
This work develops a simple distributed fiber-link system with a newly designed antenna to generate ultrawideband (UWB) pulses for indoor wireless communications. The proposed system comprises a gain-switched distributed feedback laser diode (DFB-LD), electro-absorption modulator (EAM), a photodetector and a pair of coplanar waveguide (CPW) antennas. This optical approach can tolerate pulse dispersion...
We propose and we experimentally demonstrate a novel fast restoration method for Gigabit Ethernet based on the wavelength recovery. It permits to route the wavelength of a broken link in another existing ling exploiting the wavelength division multiplexing of the fibre. Such a procedure is obtained by means of an optical switch, driven by a Loss of Light signal generated by the router in case of link...
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