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Wavelength-tunable three-electrode DBR laser with a thin-active layer in tuning regions

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3 Author(s)
S. Sakano ; Hitachi Ltd., Tokyo, Japan ; A. Oka ; N. Chinone

A thin-active layer was inserted into the tuning regions of a wavelength-tunable three-electrode DBR (distributed Bragg reflector) laser. The gain of the thin-active layer compensates for the loss in adjacent passive guide layers, and improved the optical output power and spectral linewidth in tuning operations. The total tuning range was over 8 nm and the continuous tuning range was over 1 nm, with an output power increase of 30%.<>

Published in:

IEEE Photonics Technology Letters  (Volume:3 ,  Issue: 10 )