Browsing by Author "Alahakoon SE"

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    item: Thesis-Abstract
    Design and characterizing of optical carrier recovery scheme
    (2021) Alahakoon SE; Udayanga LWPR
    The field of optical communication has gained rapid development throughout the past years. With the exponentially increasing demand for the internet, the existing transmission bandwidth of fiber optic communication has become insufficient to meet up with end-user requirements. Hence, it is necessary to increase the data rate while enhancing the quality of optical communication systems. Due to the unavailability of high-speed electronics, typical intensity modulation is hard to improve further. One future proof option is to use phase modulated schemes or a combination of phase and amplitude modulation schemes. In this scenario, simultaneous amplitude and phase regeneration schemes are implemented thus making phase synchronization a major concern during the regeneration process. This research is intended to extract the carrier signal phase using the principle of four wave mixing (FWM) and to implement a successful optical carrier recovery scheme. The noise influences from the signal laser for the recovered carrier have been investigated both theoretically and experimentally. Also, the dispersion effects have been analyzed experimentally