Terahertz passive amplification via the temporal Talbot effect in metamaterial-based Bragg fibers

Pepino, Vinicius Marrara; Mota, Achiles Fontana da; Borges, Ben-Hur V.; Teixeira, Fernando L.

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dc.contributor.author	Pepino, Vinicius Marrara	-
dc.contributor.author	Mota, Achiles Fontana da	-
dc.contributor.author	Borges, Ben-Hur V.	-
dc.contributor.author	Teixeira, Fernando L.	-
dc.date.accessioned	2022-08-05T20:34:04Z	-
dc.date.available	2022-08-05T20:34:04Z	-
dc.date.issued	2022-06-13	-
dc.identifier.citation	PEPINO, Vinicius M. et al. Terahertz passive amplification via the temporal Talbot effect in metamaterial-based Bragg fibers. Journal of the Optical Society of America B, Washington, v 39, n. 7, p. 1763-1774, jul.2022. DOI 10.1364/JOSAB.454550. Disponível em: https://opg.optica.org/josab/abstract.cfm?uri=josab-39-7-1763. Acesso em: 05 ago. 2022.	pt_BR
dc.identifier.uri	https://repositorio.unb.br/handle/10482/44419	-
dc.language.iso	Inglês	pt_BR
dc.publisher	Optica Publishing Group	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Terahertz passive amplification via the temporal Talbot effect in metamaterial-based Bragg fibers	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Metamateriais	pt_BR
dc.subject.keyword	Fibras óticas	pt_BR
dc.identifier.doi	https://doi.org/10.1364/JOSAB.454550	pt_BR
dc.description.abstract1	A fully passive terahertz (THz) pulse amplification device is proposed based on leveraging the temporal Talbot effect (TTE) on a highly dispersive silicon-based metamaterial Bragg fiber. To maximize the TTE passive gain, we introduce and explore three different strategies, denoted as coherent pulse addition (CPA), forward Talbot illuminator (FTAI), and backward Talbot illuminator (BTAI). The BTAI strategy allows additional degrees of freedom for controlling the output pulse shape. Moreover, by using a continuous phase profile, we overcome the hurdle of implementing discrete phase gratings in limited time response phase modulators. We explore different pulse shapes and chirped pulses with CPA, and different gain factors with both BTAI and FTAI. Numerical simulation results show a 5.8 dB gain for a 9.8 cm long fiber with the CPA method, a 9.9 dB gain with FTAI (1.37 cm long), and a 8.8 dB gain with BTAI (1.25 cm long). These results indicate the potential of the approaches presented here, which can be used as a springboard for further developments toward high gain passive amplification THz devices.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-2481-1636	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-3438-8894	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0002-1562-1462	pt_BR
Collection(s) :	Artigos publicados em periódicos e afins