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

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

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...

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Veröffentlicht in:IEEE photonics technology letters 2003-02, Vol.15 (2), p.308-310
Hauptverfasser: Lei Xu, Wang, B.C., Baby, V., Glesk, I., Prucnal, P.R.
Format: Artikel
Sprache:eng
Schlagworte:
Carriers
Conversion
Converters
Format
High speed optical techniques
Nonlinear optical devices
Nonlinear optics
Optical fiber networks
Optical interferometry
Optical pulses
Optical signal processing
Optical wavelength conversion
Reproduction
Ripples
Semiconductor optical amplifiers
Wavelength conversion
Wavelengths
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Beschreibung
Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2002.806105