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We propose a detailed frequency-domain model of the all-optical turbo-switch incorporating two cascaded semiconductor optical amplifiers (SOAs) with a broad band-pass optical filter in between the SOAs. The frequency-domain SOA model has taken the spatial inhomogeneity of the saturated SOA gain associated with the pump optical field into consideration for the first time. The simulations based on the...
All-optical turbo-switches based on semiconductor optical amplifiers (SOAs) effectively increase the switching speed via shortening the overall recovery time of the carriers. The device is numerically simulated by time-domain and frequency-domain SOA models in order to understand its operation principle and the ultimate operation speed. An integrated turbo-switch is also proposed, where a phase adjustable...
We present a high-speed optical wavelength converter that is capable of converting the data to the same wavelength using a single semiconductor optical amplifier. Error-free wavelength conversion is demonstrated at a bit-rate of 40 Gb/s. The wavelength converter utilizes counter-propagation scheme assisted by blue-detuned optical filtering technology. The counter-propagation configuration eliminates...
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