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We report on the development of 25Gb/s 850nm VCSEL and PD components for efficient short-reach optical fiber communication systems. VCSELs with the aperture size 6–7µm show the highest −3dB bandwidth (∼20GHz) and D-factor (∼8Ghz/mA1/2). K-factor is less than 0.25ns for VCSEL with 6 µm aperture. Eye diagrams are clearly open at 25C up to 35Gb/s. The dark current of PDs remain below 1nA at T <...
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