An Optical Grooming Switch for High-Speed Traffic Aggregation in Time, Space and Wavelength

In this book a novel optical switch is designed, developed, and tested. The switch integrates optical switching, transparent traffic aggregation/grooming, and optical regener-ation. Innovative switch subsystems are developed that enable these functionalities, including all-optical OTDM-to-WDM converters. High capacity ring interconnection between metro-core rings, carrying 130 Gbit/s OTDM traffic, and metro-access rings carring 43 Gbit/s WDM traffic is experimentally demonstrated. The developed switch features flexibility in bandwidth provisioning, scalability to higher traffic volumes, and backward compatibility with existing network implementations in a future-proof way

Optical Vector Signal Analyzer Based on Differential Direct Detection

A versatile optical vector signal analyzer based on a differential direct detection scheme is presented. The analyzer measures phase, intensity, eye diagrams and constellations. The performance is demonstrated for a 112 Gbit/s PolMUX DQPSK signal and other formats

An Optical Grooming Switch for High-Speed Traffic Aggregation in Time, Space and Wavelength

In this book a novel optical switch is designed, developed, and tested. The switch integrates optical switching, transparent traffic aggregation/grooming, and optical regener-ation. Innovative switch subsystems are developed that enable these functionalities, including all-optical OTDM-to-WDM converters. High capacity ring interconnection between metro-core rings, carrying 130 Gbit/s OTDM traffic, and metro-access rings carring 43 Gbit/s WDM traffic is experimentally demonstrated. The developed switch features flexibility in bandwidth provisioning, scalability to higher traffic volumes, and backward compatibility with existing network implementations in a future-proof way

TDM-to-WDM conversion from 130 Gbit/s to 3X43 Gbit/s using XPM in a NOLM switch

We report the first demonstration of OTDM-to-WDM conversion from 130 Gbit/s simultaneously to 3 × 43 Gbit/s WDM channels in a nonlinear optical loop mirror (NOLM). The scheme is exploiting the ultra-fast Kerr based XPM in a NOLM and gives full flexibility for selecting the output WDM channel wavelengths. For the success of the experiment we rely crucially on a new specially designed highly nonlinear fiber (HNLF) exhibiting low dispersion and low dispersion slope such that low walk-off operation across the C-band is possible. Error free performance is achieved with penalties ranging from 0.5 dB to 3.5 dB for all three WDM channels

TDM-to-WDM conversion based on NOLM from 128.1 Gbit/s to 3 × 42.7 Gbit/s

A nonlinear optical switch performing conversion of a 128.1 Gbit/s OTDM channel simultaneously to 3 × 42.7 Gbit/s WDM is experimentally demonstrated. The proposed scheme is based on a nonlinear optical loop mirror incorporating a broadband gate with low dispersion and low channel walk-off and thus requires the use of low-dispersion, dispersion flattened HNLF. BER measurement results show no error floor, and a maximum 3.5 dB penalty for the three WDM channels is achieved

Field trial of WDM-OTDM transmultiplexing employing photonic switch fabric-based buffer-less bit-interleaved data grooming and all-optical regeneration

We report, for the first time, a field trial of a novel 42.7Gbps/128.1Gbps WDM/OTDM grooming node, and confirm node interoperability and the data integrity of asynchronous retiming

Field experiments with a grooming switch for OTDM meshed networking

Field experiments of 42.7 / 128.1 Gb/s WDM-OTDM transmultiplexing and all-optical dual-wavelength regeneration at the OTDM rate are presented. By using the asynchronous retiming scheme, we achieve error-free buffer-less data grooming with time-slot interchange (TSI) capability for OTDM meshed networking. We demonstrate excellent performance from the system, discuss scalability, applicability, and the potential reach of the asynchronous retiming scheme for transparent OTDM domain interconnection