Abstract

An improved optoelectronic harmonic mixer (OEHM) has been employed for measuring the timing noise of 320GHz optical pulses that are generated from a 160GHz mode-locked laser diode by the temporal Talbot effect. The OEHM makes use of a low-drive voltage LiNbO3 modulator and a W-band unitraveling carrier photodiode for converting the 320GHz pulse intensity into a low-frequency electrical signal. The time domain demodulation technique has been used for the precise evaluation of phase noise power spectral density. The rms timing jitter has been estimated to be 311fs for the 10Hz18.6MHz bandwidth.

© 2006 Optical Society of America

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