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

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4 Author(s)
Awad, E.S. ; Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA ; Cho, P.S. ; Moulton, N. ; Goldhar, J.

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 12 )