Optical filtering by leaky guided modes in macroporous silicon

Avrutsky, Ivan; Kochergin, Vladimir
May 2003
Applied Physics Letters;5/26/2003, Vol. 82 Issue 21, p3590
Academic Journal
We propose an optical filtering mechanism in a porous material based on wavelength-dependent losses for leaky modes in pore waveguides. The spectral transmission characteristics of such filters can be controlled by applying thin-film coatings to the pore walls. Such filters will find application in the deep UV spectral range where traditional approaches to filter design fail due to lack of suitable materials.


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