Wavelength router for energy efficient photonic aggregation with large-scale λ-tunable WDM/TDM-PON

Yumiko Senoo, Shin Kaneko, Shunji Kimura, Naoto Yoshimoto

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper proposes a wavelength router configuration with large aggregation ratio for lambda (λ)-tunable wavelength-division-multiplexing / time-division-multiplexing passive optical network (WDM/TDM-PON). With this router, the aggregation functions of layer-2 switches (L2SWs) in the conventional access networks are moved into the PON; photonic aggregation. Therefore, L2SWs are no longer required, which lowers power consumptions in the central office. Our wavelength router comprises cyclic arrayed-waveguide gratings (AWGs), two-stage power splitters that work for wavelength-routing and aggregating the traffics from different PON branches, respectively. Optical amplifiers are placed in parallel between each stage of power splitters to compensate for the insertion losses of this router itself, and the number of optical amplifiers is proportional to that of splitting ratios of power splitters on the optical subscriber unit (OSU) side. When the total aggregation ratio of the router is fixed, the allowable combination of the splitting ratios of each stage is decided to fulfill the loss budget requirements. Based on theoretical analysis clarifying the allowable combinations, we decide the router configuration with the lowest power consumption and estimate the impact of the photonic aggregation on the power consumption in the central office.

Original languageEnglish
Pages350-354
Number of pages5
DOIs
Publication statusPublished - Dec 1 2012
Externally publishedYes
Event18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012 - Jeju Island, Korea, Republic of
Duration: Oct 15 2012Oct 17 2012

Conference

Conference18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012
CountryKorea, Republic of
CityJeju Island
Period10/15/1210/17/12

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Cite this

Senoo, Y., Kaneko, S., Kimura, S., & Yoshimoto, N. (2012). Wavelength router for energy efficient photonic aggregation with large-scale λ-tunable WDM/TDM-PON. 350-354. Paper presented at 18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012, Jeju Island, Korea, Republic of. https://doi.org/10.1109/APCC.2012.6388160