Characterization of Frequency Drift of Sampled-Grating DBR Laser Module Under Direct Modulation |
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| Authors: | Anandarajah P.M. Maher R. Barry L.P. Kaszubowska-Anandarajah A. Connoly E. Farrell T. McDonald D. |
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| Affiliation: | Dublin City Univ., Dublin; |
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| Abstract: | The authors demonstrate the drift in frequency of a static sampled-grating distributed Bragg reflector (SG DBR) laser module when it is subjected to direct modulation. The magnitude of drift and its settling time is characterized as a function of the index of modulation. Results show that when the directly modulated SG DBR is optically filtered, as in a dense wavelength-division-multiplexed system, a power penalty of 6.7 dB is incurred in comparison to the unfiltered case. |
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