Influence of external optical feedback on threshold and spectralcharacteristics of vertical-cavity surface-emitting lasers |
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| Authors: | Shijun Jiang Zeqi Pan Dagenais M. Morgan R.A. Kojima K. |
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| Affiliation: | Dept. of Electr. Eng., Maryland Univ., College Park, MD; |
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| Abstract: | ![]()
We report a study of the effects of external optical feedback on the threshold and spectral characteristics of VCSELs with feedback levels in the range from -25 dB to 0 dB. A large threshold current reduction and multi-extended-cavity-mode operation have been observed. The experimental results are in good agreement with the theoretical calculations based on a compound cavity laser model |
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