Zobrazeno 1 - 10
of 232
pro vyhledávání: '"H.L. Fragnito"'
Publikováno v:
Latin America Optics and Photonics (LAOP) Conference 2022.
We present the modeling of optical amplifiers based on the transient population inversion in optically pumped graphene atop integrated waveguides. We discuss the design criteria and introduce our results in the optimization of this device.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ca0d0b0c37bce414e132a44b3fd8f75
https://doi.org/10.1364/laop.2022.m3d.3
https://doi.org/10.1364/laop.2022.m3d.3
Akademický článek
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Autor:
A. Cerqueira S., A.R. do Nascimento, M.A.R. Franco, I. de Oliveira, V.A. Serrão, H.L. Fragnito
Publikováno v:
Optical Fiber Technology. 18:462-469
This work presents a numerical and experimental characterization of polarization properties from hybrid photonic crystal fibers (hybrid PCFs or HPCFs) across different bandgaps. Very high extinction ratio over at least three wide bands and single-mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cabed9cd5d69e47c191a4c054142b392
https://doi.org/10.1016/j.yofte.2012.07.005
https://doi.org/10.1016/j.yofte.2012.07.005
Akademický článek
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Autor:
H.L. Fragnito, C. Mazzali
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:253-257
We demonstrate an optical-fiber recirculating loop for experimental simulation of long-haul optical communication systems using cascaded erbium-doped fiber amplifiers (EDFA's) operating in the gain saturation regime. The loop contains sections of dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::610a4439ee8e59922d85e40038b7c9a7
https://doi.org/10.1109/22.661711
https://doi.org/10.1109/22.661711
Autor:
Arismar Cerqueira S., J.M. Chavez Boggio, A.A. Rieznik, H.E. Hernandez-Figueroa, H.L. Fragnito
Publikováno v:
2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference.
A new method to efficiently generate broadband cascaded four-wave mixing products is presented. It consists of launching two strong pump waves near the zero-dispersion wavelength of an optical fiber. The obtained bandwidth of Four-Wave Mixing product
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b32b55d7dc2a5970dbfaff87ca24f2a
https://doi.org/10.1109/imoc.2007.4404325
https://doi.org/10.1109/imoc.2007.4404325
Autor:
H. Waldman, H.L. Fragnito, Marcio Silva, Carlos Antônio Ruggiero, Tereza Cristina Melo de Brito Carvalho, Regina Melo Silveira, Luis Fernandez Lopez, G.M. Ferreira, Wilson Vicente Ruggiero
Publikováno v:
TRIDENTCOM
In 2005, the creation of the network for the Kyatera project began, with the declared goal of designing the most advanced and innovative research and experimental network of Latin America. This paper describes the groundwork for the development of su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a846cf2f7862f4c7e2e943790e5cd219
https://doi.org/10.1109/tridnt.2006.1649154
https://doi.org/10.1109/tridnt.2006.1649154
Publikováno v:
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678).
We measure the parasitic four wave mixing tones generated by two signals that are amplified in two-pump fiber optical parametric amplifiers (2P-FOPAs). We consider two parametric amplifiers that use different lengths of fiber and pump powers but have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0566ce79638320c73c6f3b7e6b95a905
https://doi.org/10.1109/imoc.2003.1242640
https://doi.org/10.1109/imoc.2003.1242640
Autor:
H.L. Fragnito, C. Mazzali
Publikováno v:
OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177).
Summary form only given. Modulation formats for optical communication systems [e.g., return to zero (RZ) versus non-return to zero (NRZ)I is at present a subject of intense discussion. Recently new format options for RZ systems, such as pulse positio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26919c6beb69692b72ff174756c34edd
https://doi.org/10.1109/ofc.1998.657323
https://doi.org/10.1109/ofc.1998.657323
Autor:
H.L. Fragnito, C. Mazzali
Publikováno v:
24th European Conference on Optical Communication. ECOC '98 (IEEE Cat. No.98TH8398).
We observe a non-monotonic transient response of erbium doped fibre amplifiers operating near transparency condition and demonstrate, by experiments and numerical simulations, that this effect is due to the background loss.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35e8cae63149c9b3fdc535e3731f54b9
https://doi.org/10.1109/ecoc.1998.732678
https://doi.org/10.1109/ecoc.1998.732678