Demonstration of Flexible Optical Network Based on Path Computation Element
- 16 December 2011
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 30 (5), 727-733
- https://doi.org/10.1109/jlt.2011.2180361
Abstract
Flexible optical networks, based on bandwidth-variable optical cross-connects (BV-OXCs) and novel flexible transponders, are expected to significantly improve the overall spectrum efficiency with respect to traditional networks where fixed frequency spacing is applied. Flexible optical networks will exploit the BV-OXC capability to dynamically configure the reserved bandwidth as a set of frequency slots. In addition, flexible transponders will be employed to dynamically configure transmission parameters, such as bit-rate and modulation format. To enable these new configuration capabilities, network operation enhancements need to be efficiently introduced and investigated. In this study, we focus for the first time on the Path Computation Element (PCE) architecture for flexible optical networks. PCE architecture and PCE communication protocol are enhanced to maximize the spectral efficiency and to provide indications also on the specific transmission parameters to configure. Experimental demonstration is provided through two different experiments, successfully showing the PCE capability to trigger dynamic rerouting with bit-rate or modulation format adaptation. In particular, the experiments demonstrate, in a real testbed, dynamic frequency slot assignment and format adaptation from DP-16QAM to DP-QPSK at 100 Gb/s, and bit-rate adaptation at DP-16QAM from 200 Gb/s to 100 Gb/s.This publication has 22 references indexed in Scilit:
- Modeling and Distributed Provisioning in 10–40–100-Gb/s Multirate Wavelength Switched Optical NetworksJournal of Lightwave Technology, 2011
- Generalized Labels for Lambda-Switch-Capable (LSC) Label Switching RoutersPublished by RFC Editor ,2011
- Impact of Inter-Channel Nonlinearities on the Planning of 25–100 Gb/s Elastic Optical NetworksJournal of Lightwave Technology, 2011
- Offline Impairment-Aware RWA and Regenerator Placement in Translucent Optical NetworksJournal of Lightwave Technology, 2010
- Experimental Demonstration of an Impairment Aware Network Planning and Operation Tool for Transparent/Translucent Optical NetworksJournal of Lightwave Technology, 2010
- Experimental study and assessment of the link distance impact in an OSNR-based IRWA algorithm in GMPLS-enabled translucent WSON networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2010
- Experimental Translucent-Oriented Routing for Dynamic Lightpath Provisioning in GMPLS-Enabled Wavelength Switched Optical NetworksJournal of Lightwave Technology, 2010
- Path Computation Element (PCE) Communication Protocol (PCEP)Published by RFC Editor ,2009
- Optical Path Computation Element interworking with Network Management System for Transparent Mesh NetworksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Implementing a Path Computation Element (PCE) to encompass physical impairments in transparent networksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007