Abstract
In this work, a two-photon recording system in a 50-layer structure is designed with each recording layer containing 4.7 GB of data, similar to the capacity of a singlelayer digital versatile disc, with the total capacity becoming 235 GB/disc. By the use of a single-laser system to realize recording and reading, a multilayer disc structure is applied in which the groove structure is set on the substrate for servo control; the laser is separated by a polarized beam splitter (PBS) into two parts, one for recording and the other for servo control in the optical system. The simulation results show the feasibility of high-density optical data storage using a single laser in a multilayer structure. The experimental platform is set up in which the focus error signal is verified.
| Original language | English |
|---|---|
| Pages (from-to) | 641-650 |
| Number of pages | 10 |
| Journal | Sensors and Materials |
| Volume | 27 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2015 |
Keywords
- Multilayer structure
- Optical data storage
- Single-laser system
- Two-photon system