Greatly increased fiber transmission distance with an optically injection-locked vertical-cavity surface-emitting laser
ABSTRACT We demonstrate single-mode fiber transmission distance enhancement up to 120 km of a directly-modulated injection-locked VCSEL modulated by a 10Gb/s NRZ signal. Injection locking induced data pattern inversion of the VCSEL causes adjustable chirp, which greatly extends reach. Both experiments and simulations are shown to explain this phenomenon.
SourceAvailable from: Hamed DalirElectronics Letters 05/2014; · 1.07 Impact Factor
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ABSTRACT: The highly stable operation of 980 nm transverse coupled cavity vertical cavity surface emitting lasers (VCSELs) with enhanced modulation bandwidth for high-speed optical interconnects is reported. The device operates at 25 Gbit/s from 0 to 60??C with fixed driving conditions. In addition, the stability of driving currents into the VCSEL is explored, exhibiting that the bandwidth enhancement is not sensitive to the current. The ultra-compact inplane coupled cavity VCSEL can boost the modulation speed beyond the relaxation oscillation frequency because of the to photon??photon resonance, which makes it useful in next-generation computing and data centre networking.Electronics Letters 05/2014; 50(11):823-824. DOI:10.1049/el.2014.0696 · 1.07 Impact Factor