Demultiplexing of OTDM-DPSK signals based on a single semiconductor optical amplifier and optical filtering

Jing Xu, Yunhong Ding, Christophe Peucheret, Jorge Seoane, Hans Christian Hansen Mulvad, Michael Galili, Weiqi Xue, Jesper Mørk, Palle Jeppesen

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Abstract

We propose and demonstrate the use of a single semiconductor optical amplifier (SOA) and optical filtering to time demultiplex tributaries from an optical time division multiplexing-differential phase shift keying (OTDM-DPSK) signal. The scheme takes advantage of the fact that phase variations added to the target channel by cross-phase modulation from the control signal are effectively subtracted in the differential demodulation scheme employed for DPSK signals. Demultiplexing from 80 to 40 Gbit=s is demonstrated with moderate power penalty using an SOA with recovery time twice as long as the bit period at 80 Gbit=s. Large dynamic ranges for the input power and SOA current are experimentally demonstrated. The scheme is expected to be scalable toward higher bit rates. © 2011 Optical Society of America.
Original languageEnglish
JournalOptics Letters
Volume36
Issue number9
Pages (from-to)1560-1562
ISSN0146-9592
DOIs
Publication statusPublished - 2011

Bibliographical note

This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-36-9-1560. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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