Method for reading and writing with holographic storage system and holographic storage system

A method for reading and writing with holographic storage system, comprising the following steps:

• (a) providing a reference light and a signal light;
• (b) propagating the reference light and the signal light to an optical storage medium to record an interference grating;
• (c) changing the reference light and the signal light and repeating the step of providing another changed reference light and another changed signal light to step (b), wherein the reference lights and the interference gratings are one-to-one correspondence;
• (d) repeating steps (a) to (c) to obtain a plurality of the reference lights and a plurality of the interference gratings;
• (e) providing a reading light that comprises the reference lights to the optical storage medium to simultaneously read the interference gratings to form an interference result, wherein the interference result is the interference of a plurality of diffraction signals of the interference gratings respectively, any one of the reference lights cannot read out the interference gratings recorded by the other reference lights;
• and
• (f) moving the optical storage medium and repeating step (e) to obtain a plurality of the interference results and a plurality of the reading lights.