Experimental demonstration of packet-rate 10-Gb/s OOK OSNR monitoring for QoS-aware cross-layer packet protection Caroline P. Lai,1,* Jeng-Yuan Yang,2 Ajay S. Garg,1 Michael S. Wang,1 Mohammad R. Chitgarha,2 Alan E. Willner,2 and Keren Bergman1 1 Department of Electrical Engineering, Columbia University, New York, NY 10027, USA Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA *
[email protected]
2
Abstract: A cross-layer network platform may enable introspective access to the physical layer, allowing optical performance monitoring measurements to feedback to higher layers for packet rerouting and protection. We experimentally demonstrate quality-of-service-aware packet protection that leverages cross-layer signaling based on the monitoring of packets‟ optical-signal-to-noise ratio. In order to detect degraded data streams, the monitoring system is based on a delay-line Mach-Zehnder interferometer and a field-programmable gate array. The system is realized in an experimental cross-layer enabled optical packet switched fabric, measuring the optical-signal-to-noise ratio for 10-Gb/s OOK streams. The packet protection scheme uses the dynamic performance measurements to actuate a rerouting of high-quality-of-service packets. 8 × 10-Gb/s wavelength-striped optical messages are rerouted through the fabric errorfree (bit-error rates less than 1012). ©2011 Optical Society of America OCIS codes: (060.4510) Optical communications; (060.4259) Networks, packet-switched; (060.4261) Networks, protection and restoration
References and links 1.
D. C. Kilper, R. Bach, D. J. Blumenthal, D. Einstein, T. Landolsi, L. Ostar, M. Preiss, and A. E. Willner, “Optical performance monitoring,” J. Lightwave Technol. 22(1), 294–304 (2004). 2. A. E. Willner, Z. Pan, and C. Yu, “Optical performance monitoring,” Optical Fiber Telecommunications VB (Elsevier Publishers, Academic Press, San Diego, CA, 2008), Chap. 7. 3. NSF Center for Integrated Access Networks (CIAN, 2011), http://cian-erc.org/ 4. I. Baldine, “Unique optical networking facilities and cross-layer networking,” in LEOSST '09. IEEE/LEOS Summer Topical Meeting, 2009 (IEEE/LEOS, 2009), pp. 145–146. 5. Y. K. Lizé, J. Yang, L. C. Christen, X. Wu, S. Nuccio, T. Wu, A. E. Willner, R. Kashyap, and F. Séguin, Simultaneous and independent monitoring of OSNR, chromatic and polarization mode dispersion for NRZ-OOK, DPSK and duobinary,” in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper OThN2. 6. J. J. Martínez, M. I. Roche, A. Villafranca, C. D. Heras, J. M. Subias, J. Pelayo, I. Garcés, P. Blasco, and E. Pellejer, “Novel in-band OSNR monitoring system based on a polarization interferometer,” in 2010 36th European Conference and Exhibition on Optical Communication (ECOC) (IEEE, 2010), paper P3.18, p. 1–3. 7. X. Yi, W. Chen, and W. Shieh, “An OSNR monitor for optical packet switched networks,” IEEE Photon. Technol. Lett. 18(13), 1448–1450 (2006). 8. J. Yang, M. R. Chitgarha, L. Zhang, and A. E. Willner, “PMD and OSNR insensitive 40-Gb/s OOK/DPSK chromatic dispersion monitoring using a delay-line interferometer and a
