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Photonics 2014, 1(2), 154-161; doi:10.3390/photonics1020154
Article

Polarization-Independent All-Optical Regenerator for DPSK Data

1,* , 2
,
1
 and
2
1 Institute of Communication, Information and Perception Technologies, Scuola Superiore Sant'Anna, via Moruzzi 1, Pisa 56124, Italy 2 National Laboratory of Photonic Networks, Consorzio Nazionale Interuniversitario per le Telecomunicazioni, via Moruzzi 1, Pisa 56124, Italy
* Author to whom correspondence should be addressed.
Received: 30 January 2014 / Revised: 4 May 2014 / Accepted: 5 May 2014 / Published: 27 May 2014
(This article belongs to the Special Issue All Optical Networks for Communications)
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Abstract

We demonstrate polarization-independent simultaneous all-optical phase-preserving amplitude regeneration and wavelength conversion of NRZ differential phase shift keying (DPSK) data by four-wave mixing (FWM) in a semiconductor optical amplifier (SOA). The dependence upon polarization state of the signals is eliminated by using a co-polarized dual-pump architecture. Investigation on the regenerative capability vs. pumps detuning shows significant BER threshold margin improvement over 6 nm conversion range.
Keywords: semiconductor optical amplifiers; signal regeneration; DPSK modulation format; four-wave mixing semiconductor optical amplifiers; signal regeneration; DPSK modulation format; four-wave mixing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Vercesi, V.; Porzi, C.; Contestabile, G.; Bogoni, A. Polarization-Independent All-Optical Regenerator for DPSK Data. Photonics 2014, 1, 154-161.

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