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Proceedings Paper

Time-lens based optical packet pulse compression and retiming
Author(s): Janaina L. Areal; Hao Hu; Evarist Palushani; Anders T. Clausen; Michael S. Berger; Leif K. Oxenløwe
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Paper Abstract

This paper presents a new optical circuit that performs both pulse compression and frame synchronization and retiming. Our design aims at directly multiplexing several 10G Ethernet data packets (frames) to a high-speed OTDM link. This scheme is optically transparent and does not require clock recovery, resulting in a potentially very efficient solution. The scheme uses a time-lens, implemented through a sinusoidally driven optical phase modulation, combined with a linear dispersion element. As time-lenses are also used for pulse compression, we design the circuit also to perform pulse compression, as well. The overall design is: (1) Pulses are converted from NRZ to RZ; (2) pulses are synchronized, retimed and further compressed at the specially designed time-lens; and (3) with adequate optical delays, frames from different input interfaces are added, with a simple optical coupler, completing the OTDM signal generation. We demonstrate the effectiveness of the design by laboratory experiments.

Paper Details

Date Published: 4 June 2010
PDF: 7 pages
Proc. SPIE 7728, Nonlinear Optics and Applications IV, 77280T (4 June 2010); doi: 10.1117/12.854556
Show Author Affiliations
Janaina L. Areal, Technical Univ. of Denmark (Denmark)
Hao Hu, Technical Univ. of Denmark (Denmark)
Evarist Palushani, Technical Univ. of Denmark (Denmark)
Anders T. Clausen, Technical Univ. of Denmark (Denmark)
Michael S. Berger, Technical Univ. of Denmark (Denmark)
Leif K. Oxenløwe, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 7728:
Nonlinear Optics and Applications IV
Benjamin J. Eggleton; Alexander Luis Gaeta; Neil G. R. Broderick, Editor(s)

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