A distributed Bragg reflector and a method of fabricating the same incorporates a support for supporting the gaps against collapse. The method includes forming a plurality of alternating structure and sacrificial layers on a substrate. The structure and sacrificial layers are etched into at least one mesa protruding from the substrate. A support layer is formed on the at least one mesa leaving a portion of the structure and sacrificial layers exposed. At least a portion of at least one of the exposed sacrificial layers are etched from between the structure layers to form gaps between the structure layers.

 
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< Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion

> Fabry-perot etalon with independently selectable resonance frequency and free spectral range

> Focus adjustable head mounted display system for displaying digital contents and device for realizing the system

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