Abstract
We demonstrate an original approach to achieving a tunable 1.55μm vertical-cavity surface-emitting laser. The tunability is based on an electro-optic index modulator using nanosized droplets of liquid crystal as a phase layer. Such an approach can produce a robust and a low-cost device. A 10nm tuning range with less than 170V applied voltage has been demonstrated. The device is formed by a conventional InP-based active region with an epitaxial and a dielectric Bragg mirror. This optically pumped device exhibits an excellent side-mode suppression ratio of higher than 20dB over the whole spectral range.
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