Abstract
Photonic devices based on 2D PCs have so far been principally targeted at operation in a wave-guided configuration and at providing the basic building blocks for Photonic Integration. An important concern with this approach lies in the principal drawback of 2D PC integrated circuits, which is the optical losses resulting from diffractive coupling of wave-guided optical modes with radiation modes into free space. The problem of optical losses, which are considered as hindering the operation of 2D photonic integrated circuits based on 2D PC, can be approached from a completely different perspective: instead of attempting to confine the light entirely within waveguide structures, the 2D structures can be deliberately opened to the third space dimension by controlling the coupling between wave-guided and radiation modes. In this approach, the exploitation of the optical power is achieved by accurately tailoring the optical radiation into free space.
© 2004 Optical Society of America
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