Abstract
This work deals with the compensation of frequency modulation to amplitude modulation (FM-to-AM) conversion due to gain spectral response of a regenerative amplifier. To do so, five designs of interference filters were tested. Direct measurements of FM-to-AM conversion were performed from temporal pulses as a function of wavelength using a 60 GHz bandwidth photodiode and oscilloscope. Additional numerical studies allowed us to find the best trade-off between low optical losses and compensation efficiency over a wide spectral range. With the best interference filter design, low amplitude modulation rate was over 2.0 nm spectral range whereas it was 0.4 nm without.
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