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Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter

Xu, Lei and Wang, Bing C. and Baby, Varghese and Glesk, Ivan and Prucnal, Paul R. (2003) All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter. IEEE Photonics Technology Letters, 15 (2). pp. 308-310. ISSN 1041-1135

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Abstract

We demonstrate all-optical conversion between two different data formats: return-to-zero (RZ) and nonreturn-to-zero (NRZ) using a Mach-Zehnder interferometric wavelength converter. For RZ-to-NRZ conversion, a duplication scheme is demonstrated to reduce the ripples caused by the carrier recovery of the semiconductor optical amplifier. The relationship between the ripple-to-signal ratio and the number of pulse duplications is numerically analyzed. For the NRZ-to-RZ conversion, the wavelength converter also shows high performance. The converted RZ signal has a negative power penalty to the NRZ signal due to the change of the data format.