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| Attached Sheets: |

Fig. 1: Positioning of 2.5 Gbps Direct-Modulation Laser Emission Source and Variable-Wavelength
Laser Emission Source

Fig. 2: Positioning of Laser Emission Source with Oscillation Wavelengths in
Excess of 2.0μm |
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Copyright (c) 2005 Nippon telegraph and telephone corporation
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