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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 11 — May. 28, 2007
  • pp: 6874–6882

In-service monitoring of 16 port × 32 wavelength bi-directional WDM-PON systems with a tunable, coded optical time domain reflectometry

Jeonghwan Lee, Jonghan Park, Jae Gwang Shim, Hosung Yoon, Jin Hee Kim, Kyoungmin Kim, Jae-Oh Byun, and Namkyoo Park  »View Author Affiliations


Optics Express, Vol. 15, Issue 11, pp. 6874-6882 (2007)
http://dx.doi.org/10.1364/OE.15.006874


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Abstract

We propose a multi-port, multi-wavelength supervisory system for the in-service transmission line monitoring of a bidirectional WDM-PON system. Identifying unique requirements for the performance monitoring of a real field WDM-PON system, we define the architecture for the supervisory system and utilize the most up-to-date technologies (Simplex coding, tunable source, and optical switches) to demonstrate a successful interrogation of a transmission line up to 16 ports × 32 nodes (512 user) capacity. Monitoring of individual branch traces up to 60 km was achieved with the application of a 127-bit simplex code corresponding to a 7.5dB SNR coding gain. In-service transmission experiments showed negligible penalty from the monitoring system to the transmission signal quality, at a 2.5Gbps / 125Mbps (down / up stream) data rate.

© 2007 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2330) Fiber optics and optical communications : Fiber optics communications
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(290.1350) Scattering : Backscattering
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 4, 2007
Revised Manuscript: May 14, 2007
Manuscript Accepted: May 14, 2007
Published: May 18, 2007

Citation
Jeonghwan Lee, Jonghan Park, Jae Gwang Shim, Hosung Yoon, Jin Hee Kim, Kyoungmin Kim, Jae-Oh Byun, and Namkyoo Park, "In-service monitoring of 16 port x 32 wavelength bi-directional WDM-PON systems with a tunable, coded optical time domain reflectometry," Opt. Express 15, 6874-6882 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-11-6874


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References

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