40-Gb/s optical clock recovery using a compact traveling-wave electroabsorption modulator-based ring oscillator

Compact optical clock recovery is demonstrated by utilizing filtered and amplified photocurrent in a traveling-wave electroabsorption modulator. The 40-GHz optical clock was recovered from a 40-Gb/s optical time-division multiplexed signal and transferred to a new clock wavelength. The recovered optical clock has 500-fs timing jitter and 8-ps pulsewidth.

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