Optical signal processing using integrated multi-element SOA-MZI switch arrays for packet switching

The use of discrete but interconnected SOA - MZI switches for performing logical and highly functional processing tasks, demonstrating the multi-functional potential of the photonic switching elements is discussed. An all-optical 3R burst-mode receiver consisting of four SOA - MZI switches and operating error-free with 40 Gb/s optical bursts, proving that interconnection of multiple switching units can lead to the realisation of key network node functionalities offering increased intelligence at the physical layer is presented. In order to allow for easier interconnectiv- ity between the SOA - MZI switches and to provide compactness and cost effectiveness to the developed subsystems, the integration of multiple switches into the same platform is proposed. To this end, the implementation of the first integrated quadruple SOA - MZI switch array is reported, increasing the integration density level and reducing packaging and pigtailing costs. Finally, possible applications of integrated multiple switch arrays are discussed, indicating their suitability for producing compact circuits performing common processing tasks in a multi- wavelength environment, as well as their potential to lead to the development of an all-optical high- speed packet switched node by implementing critical packet switching functionalities in a compact and efficient way.

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