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Narrow-linewidth (<200 kHz) operation of 1.5- mu m butt-jointed multiple-quantum-well distributed Bragg reflector laser

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4 Author(s)
Matsui, Y. ; Oki Electric Ind. Co. Ltd., Tokyo, Japan ; Kunii, T. ; Horikawa, H. ; Kamijoh, T.

Linewidths as narrow as 200 kHz were achieved with a 1.5 mu m butt-jointed multiquantum-well (MQW) distributed Bragg reflector (DBR) laser. A low threshold current of 8 mA and a high output power of 28 mW were also realized, as well as narrow-linewidth operation. The device was fabricated by a five-step metalorganic vapor-phase epitaxy (MOVPE) process. These results were realized by introducing a high-quality MQW active layer, a long DBR region with a very small coupling coefficient, and a butt-jointed region with high coupling efficiency.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:3 ,  Issue: 5 )