Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/68995
Autor(es): | Bruno Romeira Luís M. Pessoa Henrique M. Salgado Charles N. Ironside José M. L. Figueiredo |
Título: | Photo-Detectors Integrated with Resonant Tunneling Diodes |
Data de publicação: | 2013 |
Resumo: | We report on photo-detectors consisting of an optical waveguide that incorporates a resonant tunneling diode (RTD). Operating at wavelengths around 1.55 μm in the optical communications C band we achieve maximum sensitivities of around 0.29 A/W which is dependent on the bias voltage. This is due to the nature of RTD nonlinear current-voltage characteristic that has a negative differential resistance (NDR) region. The resonant tunneling diode photo-detector (RTD-PD) can be operated in either non-oscillating or oscillating regimes depending on the bias voltage quiescent point. The oscillating regime is apparent when the RTD-PD is biased in the NDR region giving rise to electrical gain and microwave self-sustained oscillations Taking advantage of the RTD's NDR distinctive characteristics, we demonstrate efficient detection of gigahertz (GHz) modulated optical carriers and optical control of a RTD GHz oscillator. RTD-PD based devices can have applications in generation and optical control of GHz low-phase noise oscillators, clock recovery systems, and fiber optic enabled radio frequency communication systems. |
Assunto: | Optoelectrónica, Engenharia electrotécnica, electrónica e informática Optronics, Electrical engineering, Electronic engineering, Information engineering |
Áreas do conhecimento: | Ciências da engenharia e tecnologias::Engenharia electrotécnica, electrónica e informática Engineering and technology::Electrical engineering, Electronic engineering, Information engineering |
URI: | https://hdl.handle.net/10216/68995 |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | openAccess |
Licença: | https://creativecommons.org/licenses/by-nc/4.0/ |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
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