Abstract
This paper has introduced the concept of complex refractive index and studied the effects of material absorption on the total reflection tunneling characteristics of photonic crystals by employing the characteristic matrix method. Through numerical computation, changes of the total reflection tunneling peak of photonic crystals along with the extinction coefficient and periodical optical thickness of the materials have been studied. The peak height of the total reflection tunneling decreases with the increase of the extinction coefficient, while the frequency of the total reflection tunneling peak is free from the extinction coefficient. Moreover, the frequency and bandwidth of the total reflection tunneling decrease with the increase of the periodical optical thickness.
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