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Timing Noise Measurement of 160-GHz Optical Pulses by Optoelectronic Harmonic Mixing
IEICE TRANSACTIONS on Electronics
Publication Date: 2004/07/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Ultrafast Photonics)
timing noise, timing jitter, mode-locked laser diode, optical time-division multiplexing,
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Timing noise of 160 GHz optical pulses has been evaluated over nine decades of Fourier frequency using the optoelectronic harmonic mixing technique. For down-converting the 160 GHz pulse intensity into a low-frequency IF signal, the fourth order modulation sidebands produced by a Mach-Zehnder intensity modulator have been employed. Phase noise power spectral density and timing jitter for 155.552-GHz optical time-division multiplexed pulses and 160.640-GHz passively mode-locked pulses are measured using the time domain demodulation and time interval analysis techniques, respectively.