Determination of power reflectivity of quasi-graded distributedBragg reflectors using stopband width |
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Authors: | Kurihara K. Numai T. Kosaka H. Ogura I. Sugimoto M. Kasahara K. |
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Affiliation: | NEC Corp., Ibaraki; |
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Abstract: | The authors examine the reflectivity of the quasi-graded distributed Bragg reflector using the stopband width. The stopband width of about 1000 Å for a reflectivity of about 99% is able to be measured with an accuracy of ± 1 Å. Thus, the reflectivity is determined with high accuracy from the stopband width. It is found that the quasi-graded distributed Bragg reflector is a high-quality reflector with high reflectivity and low resistance |
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