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Optical frequency spacing tunable four-channel integrated 1.55 mu m multielectrode distributed-feedback laser array

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5 Author(s)
H. Yasaka ; Opto-Electron. Lab., NTT, Kanagawa, Japan ; J. Nakano ; M. Fukuda ; Y. Nakano
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A four-channel integrated 1.55- mu m multielectrode distributed-feedback (DFB) laser array was fabricated using the metallorganic vapor-phase deposition/liquid-phase epitaxy (MOVPE/LPE) hybrid method. Simultaneous single-longitudinal mode operation was achieved in each multielectrode DFB laser on a single chip. Utilizing the frequency tunability of multielectrode DFB lasers, optical frequency spacings were controlled and set to within a few gigahertz. The drift of frequency spacings due to temperature fluctuation was in the range of +or-50 MHz for temperature control of +or-0.1 degrees .<>

Published in:

IEEE Photonics Technology Letters  (Volume:1 ,  Issue: 4 )