Optimizing Angular Multiplexing for Holograph Data Storage
By Avishi, Zoya
Holographic data storage involves storing many two-dimensional images inside a certain volume filled with photopolymer by slightly tilting the reference beam. It presents a good alternative to hard drives, as it offers both high capacity and access rates. One of the main techniques this is achieved by is angular multiplexing. Conventional angular multiplexing involves a Mach–Zehnder interferometer, although there are other setups including the CGH technique. This project will try to optimize angular multiplexing to maximize the amount of data storage included. We will try to include the maximal amount of different angles with data uploaded while still being able to accurately retrieve each stored image. As the angular separation between holograms decreases, more holograms can be stored within the same material. However, if the angles become too close together, interference and crosstalk between neighboring holograms can make it difficult to recover the original data. Therefore, our project is meant to find the right balance between the two.
This project will improve the current methods of holographic data storage by using angular multi- plexing to increase storage capacity. This will potentially lead to an improved set up for holographic data storage that is more financially and spatially efficient. This would allow holographic data stor- age to be used more often in commercial settings.
In this day and age, it is important to be able to store large amounts of data without taking up a large amount of space. Holographic data storage can store incredibly large amounts of data compared to cloud storage. Our research would increase the storage capacity of holographic data storage by optimizing angular multiplexing methods. This method could be used in future encoding of holographic data storage to improve data capacity.