Methods, apparatus and systems for regenerating, monitoring and bridging optical signals through an optical cross-connect switch to provide increased reliability. A self testing method, apparatus and system for an optical cross-connect switch. An optical-to-electrical-to-optical converter (O/E/O) is...http://www.google.se/patents/US6944364?utm_source=gb-gplus-sharePatent US6944364 - Method and apparatus for regenerating optical signals in an all-optical cross-connect switch
