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Photoinduced absorption in B-doped hydrogenated amorphous silicon alloys applied to all-optical modulators (Articolo in rivista)
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- Photoinduced absorption in B-doped hydrogenated amorphous silicon alloys applied to all-optical modulators (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.2833325 (literal)
- Alternative label
Summonte C, Della Corte FG, Nigro MA, Desalvo A (2008)
Photoinduced absorption in B-doped hydrogenated amorphous silicon alloys applied to all-optical modulators
in Journal of applied physics; American Institute of Physics, Melville [NY] (Stati Uniti d'America)
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- Summonte C, Della Corte FG, Nigro MA, Desalvo A (literal)
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- http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JAPIAU000103000002023107000001&idtype=cvips&doi=10.1063/1.2833325&prog=normal (literal)
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- 1Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e i Microsistemi CNR,
IMM via Gobetti 101, Bologna, Italy
2Dipartimento di Informatica, Matematica, Elettronica e Trasporti, Università Mediterranea,
via Graziella, Loc. Feo Di Vito, Reggio Calabria, Italy
3DICASM, University of Bologna, Viale Risorgimento 2, I-40136 Bologna, Italy (literal)
- Titolo
- Photoinduced absorption in B-doped hydrogenated amorphous silicon alloys applied to all-optical modulators (literal)
- Abstract
- All-optical modulators have been fabricated, based on the infrared photoinduced absorption
produced within an optical waveguide upon visible light illumination. The modulation data are
analyzed by means of simulation software based on a numerical mode solver. It is found that the
modulation depth increases for pump illumination energy closer to the energy gap of the guiding
material, while illumination at varying intensity shows a sublinear dependence of the photoinduced
absorption. The results are discussed in terms of occupation statistics of gap states. It is shown that
the major contribution to the photoinduced signal derives from the modulation of the occupation of
tail states under illumination. Modeling of the phenomenon allows one to predict the behavior of a
given device and opens the way to practical applications. © 2008 American Institute of Physics (literal)
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