Abstract
In this paper, an analog microwave over fiber link for long haul distance based upon Rate Equation Laser is demonstrated. This system uses the advantage of high potential bandwidth of fiber in transmission of microwave signal. The interface of the two systems needs an up-conversion of microwave band into baseband (at which fiber operates). An Intensity Modulation Direct Detection (IMDD) technique is used to achieve this purpose. The Rate Equation laser is operated in a dynamic state, where its intensity oscillates at a microwave frequency that varies with the input signal fed by wave generator. This system can also use for two modulating tones. The frequency of the first tone is varied from 1 to 20GHz and second is set at 5GHz. A data signal of 10Gbps is transmitted over long haul single mode fiber by single tone system. A very good bit error rate (BER) 10−40 performances for 100km and 25km fiber link is achieved for both single tone and two tones respectively in proposed microwave over fiber communication system.
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