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[Keyword] wavelength-dependent(1hit)

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  • MQW Electroabsorption Optical Gates for WDM Switching Systems

    Mari KOIZUMI  Tatemi IDO  

     
    INVITED PAPER

      Vol:
    E81-C No:8
      Page(s):
    1232-1236

    We have developed a multiple quantum well (MQW) electroabsorption (EA) modulator for wavelength-division multiplexing (WDM) switching systems. The fabricated MQW EA gate has low polarization and wavelength-dependent loss and high extinction ratio within the wavelength range of 1545 to 1560 nm. And by using this gate ultra-high-speed switching is achieved for WDM signals. Moreover, we optimize the EA gate for the full gain-band of an erbium-doped fiber amplifier (EDFA)(1535 to 1560 nm). This EA gate provides low polarization-dependent loss, higher extinction ratio, and high saturation input power in the wider wavelength range. These MQW EA gates will play an important role in future WDM switching systems.