Category: FDML-OEO
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Chirp estimation means identifying how the frequency of a signal changes over time. For simple signals, this may be done using classical signal-processing tools such as spectrograms or time-frequency analysis. However, in complex RF and photonic systems, chirp estimation can become more difficult. The measured signal may include noise, nonlinear distortion, filtering effects, feedback dynamics,…
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FDML stands for Fourier Domain Mode Locking. In simple terms, FDML is a technique where a tunable optical or photonic element is synchronized with the round-trip delay of a feedback loop. The key idea is timing. If the tuning period of the optical filter, laser, or microwave-photonic filtering structure matches the delay of the loop,…