Packaged and hybrid integrated all-optical flip-flop memory

Experimental evaluation of all-optical asynchronous and synchronous memories

“…By injecting set and reset optical pulses, the dynamic operation occurs and the latch S-R toggles its logical state [7]. In order to generate the set and reset optical pulses, an external cavity laser peaking at 1558,17 nm were used, followed by a polarization controller and a Mach-Zehnder external modulator.…”

“…Different technologies have been proposed to provide optical buffering such as the use of, a SOA based MachZenhder interferometer with a feedback loop [3], two coupled identical laser diodes [4], fiber-delay lines [5], two coupled fiber ring lasers [6] or two coupled MZI-SOA [7].…”

All-optical synchronous S-R flip-flop based on active interferometric devices

“…The latch S-R consists of two coupled MZI-SOAs, powered by two CW signals at different wavelength and switches between two states (0 or 1) by injecting set and reset optical pulses into the MZI-SOA that is currently dominant. Its principle of operation as well as some experimental results were published in [6]. The output signal from the clocked S-R flip-flop was filtered, amplified by an EDFA and analysed by an oscilloscope (Agilent 86100C), connected through a pin photodiode.…”

Flip-flops ópticos basados en interferómetros Mach-Zehnder activos con realimentación

“…La utilización de interferómetros Mach-Zehnder basados en amplificadores ópticos de semiconductor para la implementación de flip-flops ha sido un campo ampliamente investigado durante los últimos años [Hil01b,Hil05,Liu06,Dou06]. La versatilidad y capacidad de integración de los SOA-MZIs los ha convertido en dispositivos esenciales para el procesado óptico de señales.…”

“…En [Liu06] se recogen los resultados obtenidos experimentalmente para la configuración de la Fig. 2.18.…”