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Theoretical analysis of tuning properties for a phase-tunable DFB laser

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3 Author(s)
Olesen, H. ; Telecommun. Res. Lab., Horsholm, Denmark ; Pan, X. ; Tromborg, B.

The device consists of a conventional or a lambda /4-shifted DFB (distributed-feedback) laser monolithically integrated with an external waveguide section with separate electrodes for phase control. Tuning curves are presented for threshold current, frequency, linewidth, and output power. The analysis demonstrates a generally higher side mode suppression and larger frequency tuning range but also a larger linewidth for the lambda /4-shifted device compared to the device with a conventional DFB section.<>

Published in:

Quantum Electronics, IEEE Journal of  (Volume:24 ,  Issue: 12 )