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Appl. Sci. 2017, 7(9), 865; doi:10.3390/app7090865

SOA Based Photonic Integrated WDM Cross-Connects for Optical Metro-Access Networks

IPI—Institute of Photonic Integration, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
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Received: 30 July 2017 / Revised: 17 August 2017 / Accepted: 18 August 2017 / Published: 23 August 2017
(This article belongs to the Special Issue Applications of Semiconductor Optical Amplifiers)
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Abstract

We present a novel optical metro node architecture that exploits the Wavelength Division Multiplexing (WDM) optical cross-connect nodes for interconnecting network elements, as well as computing and storage resources. The photonic WDM cross-connect node based on semiconductor optical amplifiers (SOA) allows switching data signals in wavelength, space, and time for fully exploiting statistical multiplexing. The advantages of using an SOA to realize the WDM cross-connect switch in terms of transparency, switching speed, photonic integrated amplification for loss-less operation, and gain equalization are verified experimentally. The experimental assessment of a 4 × 4 photonic integrated WDM cross-connect confirmed the capability of the cross-connect chip to switch the WDM signal in space and wavelength. Experimental results show lossless operation, low cross-talk <−30 dB, and dynamically switch within few nanoseconds. Moreover, the operation of the cross-connect switch with multiple WDM channels and diverse modulation formats is also investigated and reported. Error-free operation with less than a 2 dB power penalty for a single channel, as well as WDM input operation, has been measured for multiple 10/20/40 Gb/s NRZ-OOK, 20 Gb/s PAM4, and data-rate adaptive DMT traffic. Compensation of the losses indicates that the modular architecture could scale to a larger number of ports. View Full-Text
Keywords: semiconductor optical amplifiers; photonic integrated cross-connect switch; wavelength division multiplexing; optical metropolitan networks semiconductor optical amplifiers; photonic integrated cross-connect switch; wavelength division multiplexing; optical metropolitan networks
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Calabretta, N.; Miao, W.; Mekonnen, K.; Prifti, K. SOA Based Photonic Integrated WDM Cross-Connects for Optical Metro-Access Networks. Appl. Sci. 2017, 7, 865.

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