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Vertical-cavity surface-emitting lasers (VCSELs) at 1.55 mum provide high modulation bandwidth and low attenuation at a low cost. Like other directly modulated lasers, laser chirp limits the link length in standard single-mode fibers at high data rates and fiber dispersion causes bit-error-rate (BER) penalty. This can be overcome by dispersion-compensating fibers (DCFs). This letter investigates the...
Adjustable chirp is achieved in injection-locked, 10-Gb/s directly modulated, multimode 1.55-mum VCSELs for the first time, leading to 90times increase in standard single-mode fiber transmission distance to 90 km.
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