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Dual-Wavelength InAlGaAs–InP Laterally Coupled Distributed Feedback Laser

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3 Author(s)
Pozzi, F. ; Dept. of Electron. & Electr. Eng., Glasgow Univ. ; De La Rue, R.M. ; Sorel, M.

The design and operation of a novel dual-wavelength laterally coupled (LC) distributed feedback (DFB) semiconductor laser are reported. The laser has two different grating periods, one on each sidewall. Stable dual-mode emission, with low threshold currents and good extinction ratio approaching 30 dB, has been demonstrated. Generation of millimeter-wave signals by photomixing has been performed, and the linewidths of each of the individual modes and of the beat mode have been measured as a function of the injection current. It is observed that while the linewidth of the separate modes has a modest dependence on the injection level, the linewidth of the beat mode experiences a strong decrease as the injected current increases

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 24 )

Date of Publication:

Dec.15, 2006

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