Title :
Servo error signal generation for 2-photon recorded monolithic multilayer optical data storage
Author :
Walker, E.P. ; Zheng, X. ; McCormick, F.B. ; Zhang, H. ; Kim, N.-H. ; Costa, J. ; Dvornikov, A.S. ; Chapman, C.
Author_Institution :
Call/Recall Inc., San Diego, CA, USA
Abstract :
Closed-loop tracking control using fluorescent signal power on a bi-cell detector has been demonstrated on 2-photon recorded data tracks. A similar focus control technique also appears promising. This is the first demonstration, to the authors´ knowledge, of an operational tracking servo in 2-photon recorded media.
Keywords :
closed loop systems; optical control; optical disc storage; optical multilayers; servomechanisms; two-photon processes; bi-cell detector; closed-loop tracking control; fluorescent signal power; focus control; monolithic multilayer disc; optical data storage; servo error signal generation; two-photon recording; Actuators; Detectors; Fluorescence; Lenses; Memory; Nonhomogeneous media; Optical recording; Optical sensors; Servomechanisms; Signal generators;
Conference_Titel :
Optical Data Storage, 2000. Conference Digest
Conference_Location :
Whisler, BC, Canada
Print_ISBN :
0-7803-5950-X
DOI :
10.1109/ODS.2000.848011
