M. Rakib Uddin  , 
    Novel Bidirectional Optical Cross Connect by Using Reversible Optical Switches Together with Optical Circulators in WDM Networks,
    Asian Journal of Information Technology,
    Volume 6,Issue 10,
    2007,
    Pages 1020-1022,
    ISSN 1682-3915,
    ajit.2007.1020.1022,
    (https://makhillpublications.co/view-article.php?doi=ajit.2007.1020.1022)
    Abstract: A novel bidirectional optical cross connect by using reversible optical switches together with optical circulators in WDM network is proposed in this study. This study reduced the complexity of the optical cross connects.
    Keywords: Bidirectional optical cross connect;reversible optical switches;optical circulators