Analysis of inter-symbol-interference caused by shift misalignment of two objective lenses in high-NA micro holographic storage

Min, Cheol Ki; Kim, Do-Hyung; Jeon, Sungbin; Park, Kyoung Su; Park, Young Pil; Yang, Hyunseok; Park, No Cheol; Kim, Jae-Geun

doi:10.1007/s00542-012-1600-3

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“…Readout yielded a micrograting width of 306 nm at 532 nm and 197 nm at 405 nm. However, even at spot distances shorter than the wavelength, the individual microgratings are clearly distinguishable but the visibility becomes weaker [45].…”

Section: Microholographic Storagementioning

confidence: 99%

Recent advances in holographic data storage

Ruan

2014

Front. Optoelectron.

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Nowadays, big-data centers still rely on hard drives. However, there is strong evidence that these surface-storage technologies are approaching fundamental limits that may be difficult to overcome, as ever-smaller bits become less thermally stable and harder to access. An intriguing approach for next generation data-storage is to use light to store information throughout the threedimensional (3D) volume of a material. Holographic data storage (HDS) is poised to change the way we write and retrieve data forever. After many years of developing appropriate recording media and optical read-write architectures, this promising technology is now moving industriously to the market. In this paper, a review of the major achievements of HDS in the past ten years is presented and the key technique details are discussed. The author concludes that HDS technology is an attractive candidate for big data centers in the future. On the other hand, there are many challenges ahead for HDS technology to overcome in the years to come.

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Section: Microholographic Storagementioning

confidence: 99%