Abstract
Fast tuning variable optical attenuator (VOA) is a key component for rcconfigurable optical networks. At present, MEMS and free carrier absorption-based SOI waveguide p-n junction are two of the most promising approaches.1 In this paper, we present a novel acousto-optic (AO) based VOA implemented on a single mode (SM) fiber. Compared to previous approaches, the all-fiber AO-based VOA combined the merits of all-fiber device, (low insertion loss, ease in packaging etc.) and fast response of AO-device. In addition, the devices are readily cascadable.
© 2002 Optical Society of America
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