Novel Polarizers Using 2D Photonic Band Gap Structures

Photonic band gap (PBG) structures have been studied due to interests in the control of spontaneous emission as well as due to their applications in optical devices. Some applications of PBG structures have been proposed, such as reflectors [1], cavities [2], waveguides [3] etc. In order to utilize them in these applications, 2-dimensional (2D) PBG structures are required to producing ‘complete’ band gaps. Thus, their necessary band gaps must be wide in any direction on plane and must operate in two orthogonal polarization states which are parallel and perpendicular to the pillars (or holes) of the structures.