Title :
An integrated coupled-cavity 16-wavelength digitally tunable laser
Author :
Besten, J. H den ; Broeke, R.G. ; van Geemert, M. ; Binsma, J.J.M. ; Heinrichsdorff, F. ; Van Dongen, T. ; Bente, E.A.J.M. ; Leijtens, X.J.M. ; Smit, M.K.
Author_Institution :
Fac. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands
Abstract :
We present a digitally tunable laser that was realized by coupling two wavelength periodical four-channel lasers. The lasers were coupled with a multimode interference coupler, in such a way that the device has a common intracavity output waveguide containing the full multiplexed signal. In the two laser cavities, 1 /spl times/ 4 PHASARs were used with a channel spacing of 100 and 400 GHz, respectively. By coupling each PHASAR to four semiconductor optical amplifiers, 4 /spl times/ 4 channels were generated. The measured SMSR for each of the 16 wavelengths is better than 40 dB.
Keywords :
arrayed waveguide gratings; channel spacing; integrated optics; laser cavity resonators; laser tuning; optical couplers; semiconductor laser arrays; semiconductor optical amplifiers; waveguide lasers; PHASARs; arrayed-waveguide grating; channel spacing; common intracavity output waveguide; full multiplexed signal; integrated coupled-cavity 16-wavelength digitally tunable laser; laser cavities; multimode interference coupler; multiwavelength laser; semiconductor optical amplifiers; semiconductor waveguides; wavelength division multiplexing; wavelength periodical four-channel lasers; Channel spacing; Interference; Optical coupling; Optical waveguides; Semiconductor lasers; Semiconductor optical amplifiers; Semiconductor waveguides; Tunable circuits and devices; Waveguide lasers; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.804667
