Photo-Detectors Integrated with Resonant Tunneling Diodes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Bruno Romeira (Autor) Outra; Luís M. Pessoa (Autor) FEUP; Henrique M. Salgado (Autor) FEUP; Charles N. Ironside (Autor) Outra; José M. L. Figueiredo (Autor) Outra

Revista

Título: Sensors

Vol. 13 Nº 7

Páginas: 9464-9482

ISSN: 1424-3210

Editora: MDPI

Indexação

ISI Web of Knowledge - 28 Citações

ISI Web of Science

Scopus - 32 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Tecnológicas > Tecnologia > Optoelectrónica

Outras Informações

ID Authenticus: P-006-K2D

DOI: 10.3390/s130709464

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica