In this dissertation we present a new design of an optical performance monitor (OPM) that utilizes optical correlation techniques to produce real-time measurements of optical link performance. We also introduce a novel design of temporal optical correlator that is based on the White cell. We show the advantages of our method over existing techniques and outline how our proposed device can be integrated in next generation all-optical Internet networks.; We build and experimentally demonstrate a proof-of-concept design of an OPM using a White cell-based time-integrating optical correlator. The experimental apparatus is analyzed and measurements are compared to their theoretical values. Results show that our proposed technique produces the expected results with an error margin of less than 5%. Additionally, we show a detailed power loss analysis (measured) and discuss the feasibility and scalability of our method. Measurements prove the design to be promising and that it can be scaled without large power losses (less than 7dB).
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