Abstract
This paper describes a study on disk vibration of miniature optical storage. The storage uses optical probe cantilevers mounted on an air-bearing slider. Design guidelines for the storage can be obtained by the experintental results of two type of rotor vibrations repeatable runout (RRO) and non-repeatable runout (NRRO). The anplitudes of the cantilever vibration are simulated by modeling RROs as sinusoidal vibrations and NRROs as random vibrations. In case of a 100μm silicon cantilever, the relative displacement from tip to fixed end is calculated as 17Onm for φ120mm disks at 6O00rpm. The displacement can be reduced to less than lOnm when miniaturizing the disk dianteter as φ1 inch on the same driving condition.
