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- Title
Self‐Collimation in Photonic Crystals: Applications and Opportunities.
- Authors
Noori, Mina; Soroosh, Mohammad; Baghban, Hamed
- Abstract
Abstract: A comprehensive review considering recent advances in self‐collimation and its applications in optical integration is covered in the current article. Self‐collimation is compared to the conventional technique of photonic bandgap engineering to control the light propagation in photonic crystal‐based structures. It is fully discussed how the self‐collimation phenomenon can be tailored to be independent of the incident angle and polarization. This adds substantial flexibility to the structure to overcome light coupling challenges and simultaneously aids in the omission of bulk and challenging elements, including polarizers and lenses from optical integrated circuits. Additionally, designed structures have the potential to be rescaled to operate in any desired frequency range thanks to the scalability rule in the field of electromagnetics. Moreover, it is shown that one can boost the coupling efficiency by applying an anti‐reflection property to the structure, which provides not only efficient index matching but also the matching between external waves with uniform amplitude and Bloch waves with periodic amplitude.
- Subjects
PHOTONIC crystals; BAND gaps; LIGHT propagation; POLARIZATION (Electricity); ELECTROMAGNETISM
- Publication
Annalen der Physik, 2018, Vol 530, Issue 2, p1
- ISSN
0003-3804
- Publication type
Article
- DOI
10.1002/andp.201700049