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Subharmonic optical clock recovery from 160 Gb/s using time-dependent loss saturation inside a single electroabsorption modulator
Journal article

Subharmonic optical clock recovery from 160 Gb/s using time-dependent loss saturation inside a single electroabsorption modulator

E.S. Awad, P.S. Cho, N. Moulton and J. Goldhar
IEEE photonics technology letters, Vol.15(12), pp.1764-1766
01/12/2003
DOI: https://doi.org/10.1109/LPT.2003.819743

Abstract

Clocks Nonlinear optics Optical interferometry Optical losses Optical modulation Optical pulses Optical receivers Optical saturation Optical signal processing Timing
A single electroabsorption modulator (EAM) is utilized to perform subharmonic all-optical timing extraction from 160 Gb/s. The extraction technique is based on fast time-dependent loss saturation inside the EAM. The extracted timing is used for optical clock recovery with /spl les/340 fs of timing jitter. The clock recovery technique is bit-rate flexible, and the bit-error-ratio measurements reveal an error-free operation with no receiver sensitivity penalty.

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