WDM-PON Monitoring With Tunable Photon Counting OTDR

Author

Amaral, Gustavo C. ; Herrera, Luis E. Y. ; Vitoreti, Douglas ; Temporao, Guilherme P. ; Urban, P.J. ; von der Weid, J.P.

Author_Institution

Center for Telecommun. Studies, Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil

Volume

26

Issue

13

fYear

2014

fDate

1-Jul-14

Firstpage

1279

Lastpage

1282

Abstract

We explore the performance of a tunable optical time domain reflectometer based on single photon detection for fault location and quantification in wavelength division multiplexing (WDM)-passive optical networks based on a 32-channel cyclic arrayed waveguide grating using the S- and C-bands for upstream (156 Mb/s) and downstream (2.5 Gb/s) transmission and the L-band for monitoring. Downstream Rayleigh and Raman scattering contributions to the dark count noise were evaluated and properly filtered out with a total WDM + filter rejection ratio of 90 dB. Upstream power was found to generate the greatest contribution to the noise floor and is the limiting factor to the upstream transmission data rate. In-service monitoring experiments with full upstream and downstream power show that the proposed scheme is able to achieve dynamic range levels of up to 32 dB with 5-m spatial resolution and no measurable penalty in data transmission.

Keywords

arrayed waveguide gratings; optical communication equipment; optical filters; optical noise; optical time-domain reflectometry; passive optical networks; photon counting; stimulated Raman scattering; wavelength division multiplexing; 32-channel cyclic arrayed waveguide grating; C-band; L-band; Raman scattering contribution; S-band; WDM-PON monitoring; bit rate 156 Mbit/s; bit rate 2.5 Gbit/s; dark count noise; data transmission; downstream Rayleigh scattering contributions; downstream power; downstream transmission; dynamic range level; fault location; filter rejection ratio; in-service monitoring experiment; limiting factor; noise figure 32 dB; noise figure 90 dB; noise floor; single photon detection; spatial resolution; total WDM; tunable optical time domain reflectometer; tunable photon counting OTDR; upstream power; upstream transmission data rate; wavelength division multiplexing-passive optical networks; Dynamic range; L-band; Monitoring; Passive optical networks; Photonics; Wavelength division multiplexing; Optical fibers; passive optical netwoks; reflectometry; semiconductor optical amplifiers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2320871

Filename

6809975