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Optical Testbed Configurations

The configurations of optical testbeds A and B operated in JGN2 are as follows:

[Optical Testbed A <Western Area>]

[Hub] Dojima/Osaka; Keihanna

  • Optical Fiber: Low-loss SMF (ITU-T Rec. G.652), NZ-DSF (ITU-T Rec. G.655)
  • Maximum Field Experiment Environment: 645km based on one way 64.5km loopbacked by 10 times.
  • Optical Repeater: C band with Noise Figure, 5.3dB for the best transparency.
  • Optical Switch: GSMP 8x8 in order to configure an optical network experimental environment based on a certain GMPLS control protocol by providing GSMP-IF.
  • Wavelength Resource Environment: Designed for C band spacing 100GHz for 40 wavelengths.


[Optical Testbed B <Eastern Area>]

[Hub] Otemachi/Tokyo; Tsukuba RC

  • Configurations: 3 optical repeaters, Dispersion Compensation and Dispersion slope Compensation Fiber (DCF), Dynamic Gain Equalizer (DGE), Optical Spectrum Analyzer (OSA)
  • Optical Fiber: Single Mode Fiber (ITU-T Rec. G.652)
  • Wavelength Range: C-band (1535.04 nm – 1565.50 nm) whose optical signals are possibly transmitted.
  • Gain Flatness: < 0.5 dB by which WDM optical signals are possibly transmitted.
  • Transmission: Super-high speed optical signals and WDM optical signals are possibly transmitted through installation of fibers for dispersion compensation and dispersion slope compensation.
  • Experiment Environment: It is possible to flexibly perform experiments through controlling remotely optical repeater amplifiers, etc.


[Optical Testbed C <Eastern Area>]

[Hub] NICT Koganei Headquarters; Akihabara/Tokyo; Otemachi/Tokyo; Tsukuba RC

  • Optical Fiber Link: Single Mode Fiber (2 cables) ITU-T Rec. G.652
  • Flexible Wavelength Range: C-Band(1535.04 nm-1565.50 nm)
  • Gain Flatness of C-Band: < 2.0 dB


Optical Testbed A
Optical Testbed A
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Optical Testbed B
Optical Testbed B
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Optical Testbed C
Optical Testbed C
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