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Publicação
Optoelectronic oscillators for communication systems
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Orientador(es)
Resumo(s)
We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillator consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode. The RTD-based optoelectronic oscillator (OEO) has both optical and electrical input and output ports, with the fifth port allowing voltage control. The RTD-OEO locks to reference radio-frequency (RF) sources by either optical or electrical injection
locking techniques allowing remote synchronization, eliminating the need of
impedance matching between traditional RF oscillators. RTD-OEO functions include generation, amplification and distribution of RF carriers, clock recovery, carrier recovery, modulation and demodulation and frequency synthesis. Self-injection locking operation modes, where small portions of the output electrical/ optical signals are fed back into the electrical/optical input ports, are also proposed. The self-phase locked loop configuration can give rise to low-noise high-stable oscillations, not limited by the RF source performance and with no need of external optoelectronic conversion.
Descrição
Palavras-chave
Resonant tunneling diode Laser diode Synchronisation
Contexto Educativo
Citação
Romeira, Bruno; Figueiredo, José. Optoelectronic Oscillators for Communication Systems, In Emerging Trends in Technological Innovation, 273-280, ISBN: 978-3-642-11627-8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010.