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EnglishThe extraordinary reflectivity and resonance features of high-contrast gratings are consequences of the interference of two grating modes. From this observation, an extension of the Fabry-P´erot interferometer to the bimodal case is proposed, in view of describing rigorously the physical mechanisms occurring in the grating. The closedform expressions of the interferometer reflection and transmission, obtained starting from a novel parametrization of the unitary symmetric 3 × 3 scattering matrix characterizing the bar-air interface, allow a complete exploration of the device parameter space, explaining and predicting phenomena such as ultra-broadband quasi-100% reflectivity.
High-contrast gratings as generalized Fabry-Pérot interferometers / Tibaldi, Alberto; Debernardi, Pierluigi; Orta, Renato. - ELETTRONICO. - (2018). ((Intervento presentato al convegno SPIE Photonics West 2018 tenutosi a San Francisco (CA) nel Gennaio-Febbraio 2018 [10.1117/12.2286241].
| Titolo: | High-contrast gratings as generalized Fabry-Pérot interferometers | |
| Autori: | ||
| Data di pubblicazione: | 2018 | |
| Abstract: | The extraordinary reflectivity and resonance features of high-contrast gratings are consequences ...of the interference of two grating modes. From this observation, an extension of the Fabry-P´erot interferometer to the bimodal case is proposed, in view of describing rigorously the physical mechanisms occurring in the grating. The closedform expressions of the interferometer reflection and transmission, obtained starting from a novel parametrization of the unitary symmetric 3 × 3 scattering matrix characterizing the bar-air interface, allow a complete exploration of the device parameter space, explaining and predicting phenomena such as ultra-broadband quasi-100% reflectivity. | |
| ISBN: | 9781510615694 9781510615700 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 2018Tibaldi_SPIE.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2702687
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