Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007152 | Optics & Laser Technology | 2017 | 5 Pages |
Abstract
We report the fabrication of a ten channel electroabsorption modulated DFB laser (EML) array. Different emission wavelengths of the laser array are obtained by selective area growth (SAG) technique, which is also used for the integration of electroabsorption modulators (EAM) with the lasers. An arrayed waveguide grating (AWG) combiner is integrated monolithically with the laser array by butt-joint regrowth (BJR) technique. A buried ridge waveguide structure is adopted for the AWG combiner. A self aligned fabrication procedure is adopted for the fabrication of the waveguide structure of the device to eliminate the misalignment between the laser active waveguide and the passive waveguide. A Ti thin film heater is integrated for each laser in the array. With the help of the heaters, ten laser emissions with 1.8Â nm channel spacing are obtained. The integrated EAM has a larger than 11Â dB static extinction ratios and larger than 8Â GHz small signal modulation bandwidths. The light power collected in the output waveguide of the AWG is larger than â13Â dBm for each wavelength.
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Authors
Junjie Xu, Song Liang, Zhike Zhang, Junming An, Hongliang Zhu, Wei Wang,