光纤耦合波长复用的全息光盘存储记录

详细描述了用光纤耦合、波长复用的全息光盘仔储光路．指出在全息光盘驱动器即将市场化的今天．由于其光路简单、光学元件较少、性价比高．很有可能成为新的全息光盘驱动器的核心技术之一。由于短波长单模光纤及其双波长光纤分束器件的要求比较高．而用多模光纤进行准单模输出调整．以及用分光棱镜进行光束的分光．同时用对双波长敏感的光致聚合物材料进行存储．其光谱灵敏度均匀．光谱范围互不重叠。实验结果表明．光路结构合理．存储效果良好。

The optical path structure of holographic storage with fiber coupling and wavelength multiplexing in the optical disk is detailed in this paper. Because of simple structure, less optical elements and higher ratio of capability to price, it will become a new core technology in the holographic optical disk drive. Because the performance of the short wavelength single mode optical fiber should be higher, a multi-model optical fiber is used to produce quasi-single mode output, and a beam prism employed instead of the optical fiber splitter. A photopolymer is made which is sensitive to two wavelengths as the storage material. Its sensitivity of spectrum is even, and the spectrum range is not overlapping. The experimental result indicates that the storage effect is better and the structure of optical path is reasonable.