System and method for tracking in single-bit holographic data storage

A method of reading data from an optical data disk and controlling radial run out, comprising:

• spinning a holographic storage medium in an optical media drive;
• illuminating the holographic storage medium with a laser;
• reading a reflection beam from the medium via a detector;
• determining tracking error via detection of the reflection beam, wherein the tracking error is based on at least a read of a data micro-hologram in the holographic storage medium and a phase difference of reflection beam signals detected by the detector;
• and
• controlling the radial position of an optical pickup in the optical media drive based on the tracking error.

An optical media drive comprising:

• an optical excitation device configured to focus a laser beam on a micro-hologram in an optical disc, wherein the micro-hologram is indicative of data stored on the optical disc;
• an optical detector configured to detect a reflected light beam from the micro-hologram in the optical disc;
• a converter configured to translate the optical detector signals into a tracking-error signal;
• and
• a tracking servo mechanism configured to control a radial position of the laser beam with respect to the optical disc, wherein the tracking servo mechanism is configured to receive the tracking error signal.