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Topologies of two, three and four time-delay-coupled chaotic semiconductor lasers are experimentally and theoretically found to show new types of synchronization. Generalized zero-lag synchronization is observed for two lasers separated by long distances even when their selffeedback delays are not equal. Generalized sub-lattice synchronization is observed for quadrilateral geometries while the equilateral triangle is zerolag synchronized. Generalized zero-lag synchronization, without thedoi:10.1364/oe.20.004352 pmid:22418193 fatcat:jcmtu62xrbhvridiiaitihj6ae