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Proceedings Paper

Improved 40 GHz all-optical clock recovery using a novel code mixer
Author(s): Likai Zhu; Jinlong Yu; Aixu Zhang; Yaotian Wang; Yandong Zhang; Enze Yang
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Paper Abstract

To improve the all-optical clock recovery, a novel device termed as code mixer was designed to preprocess the injected data signals. In the time domain, the code mixer can change the probability distribution of the amplitude of the data pulses and reduce the amount of codes "0". In the power spectrum, the code mixer can reduce the continuous spectral component. It was demonstrated experimentally that the code mixer could concentrate the probability distribution of the amplitude of the pulses to half of the maximum amplitude. It was also demonstrated theoretically and experimentally that using a code mixer of more ways or several cascade code mixers the clock signal recovered can be further improved. In the experiment of 40GHz all-optical clock recovery using an injection mode-locked fibre ring laser based on a semiconductor optical amplifier, the amplitude fluctuation and timing jitter of the clock pulses recovered caused by the pattern effect were reduced obviously.

Paper Details

Date Published: 8 December 2005
PDF: 8 pages
Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 602120 (8 December 2005); doi: 10.1117/12.636563
Show Author Affiliations
Likai Zhu, Tianjin Univ. (China)
Jinlong Yu, Tianjin Univ. (China)
Aixu Zhang, Tianjin Univ. (China)
Yaotian Wang, Tianjin Univ. (China)
Yandong Zhang, Tianjin Univ. (China)
Enze Yang, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 6021:
Optical Transmission, Switching, and Subsystems III
Rodney S. Tucker; Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama, Editor(s)

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