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This paper describes the first optical phase lock loop (OPLL) based on a photonic integrated circuit (PIC) fabricated using a generic foundry process and off-the-shelf electronic components. The PIC contains a DBR laser that is for the first time frequency and phase stabilized in reference to an Optical Frequency Comb Generator (OFCG) line. The OFCG used in this demonstration offers 19 highly coherent...
Radio over fibre (RoF) system and orthogonal frequency division multiplexing (OFDM) have attracted much interest for increasing the capacity and coverage area for future broadband wireless millimetre waves (mm-waves) at 60GHz [1, 2]. Fast OFDM (F-OFDM), another promising multicarrier scheme, reduces the subcarrier spacing to half of symbol rate per subcarrier [3]. When compared to the conventional...
Heretofore, the mo st presented L earning Automata (LA) is invented to interact with double level environments (one level for reward and the other for penalty). Those LA are often expedient, optimal or both of them and can minimize their mean value of receiving penalties (or at least converge to the minimum point) during time an d work much better than a pure-chance automaton. However, in m any operational...
A novel, simple, and cost effective set up for generating phase modulated millimeter-waves is experimentally demonstrated by using an externally injected gain switched laser. System performance has been investigated for 2.5Gbps downstream data.
We propose a simple and cost effective approach for the optical generation and downstream transmission of a data modulated 60 GHz signal using a gain switched laser (GSL). Gain switching is achieved by driving the laser with a 15 GHz local oscillator combined with a 1.25 Gbps on-off keyed (OOK) data stream. The system was tested over a 3 km length of fibre and a 2 m radio link and showed good performance...
The ever growing demand for high bandwidth allowing broadband applications to be delivered to end-users forces the system operators to seek new ways to increase the bandwidth and capacity of telecommunication systems. It is expected that radio over fiber may be a solution to many problems associated with bandwidth issues. The combination of the two technologies enables use of both their merits: fiber...
We present a novel, simple and cost effective system for optical millimeter-wave generation and transmission of 3 Gbps data based on gain switching. System performance has been investigated, including wireless transmission and power budget analysis.
A system for all-optical generation and distribution of impulse radio UWB signals has been implemented and demonstrated experimentally. Bit error rate measurements at 1.625 Gbps and ldquoover the airrdquo performance is presented.
Higher order modes in optical fibers exhibit large, negative chromatic dispersion when operated near cutoff. Mode LP02 represents a large negative dispersion than other modes. Hence, the LP 02 mode is used as a dispersion compensator to give a short length dispersion compensating fiber (DCF). The DCF length is calculated in the wavelength band 1530-1570 nm. It is found to be 25.168 m per 1 km long...
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