1. The optical storage process consists of information coding, grating unit matrix building and decoding.

2. It is available to improve optical storage density by using short wavelength laser, but a harder focusing servo system is need.

3. In the paper a optical storage method based on the principle of grating diffraction is presented.

4. The recent advances of photochromism in optical storage field are summarized with the examples of organic and biological materials.

5. In addition, other high density optical storage methods are introduced in this paper.

5. try its best to collect and create good sentences.

6. Gan F X. Digital Optical Disks Optical Storage Media. Shanghai: Shanghai Science and Technology Press. 1992.

7. Product of monitor, optical storage, advocate board begin large - scale fight.

8. The prepared bisazo benzene polymer is used as the two-photon optical storage medium.

9. The invention relates to an erasable two-photon polarized multivariate, multistage and multilayer optical storage technology based on a bisazo benzene polymer.

10. The recording laser shift from red laser to blue laser in next generation optical storage.

11. The holographic storage is one of the most promising optical storage technologies for high - density dada storage.

12. Photochromic materials have wide applications in many fields such as photochromic glasses, optical storage materials, and light-operated switch, ect.

13. The main attention has been paid on amorphous rare earth- transition metal alloy films for magneto-optical storage and amorphous semiconductor films for phase change optical storage.