109 Gbit/in.2Recording on Near-Field Optical Disc Using Combination of Partial-Response Channel and Low-Density Parity-Check Code

Autor:	Ariyoshi Nakaoki, Tetsu Watanabe, Takahiro Ohkubo, Osamu Kawakubo, Tamotsu Yamagami
Rok vydání:	2009
Předmět:	Physics Physics and Astronomy (miscellaneous) business.industry General Engineering General Physics and Astronomy Near and far field Numerical aperture Optics Solid immersion lens Gigabit Partial response Redundancy (engineering) Low-density parity-check code business Optical disc
Zdroj:	Japanese Journal of Applied Physics. 48:03A042
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.48.03a042
Popis:	The signal properties were examined at recording densities higher than 100 Gbit/in.2 in our solid immersion lens recording system of 1.84 numerical aperture (NA). The low-density parity-check coded partial-response (PR) 17-parity preserve/prohibit (PP) system increased the recording density by approximately 35% compared with the previous results. The recording power tolerance was ±8.1% at a recording density of 109 Gbit/in.2. We conclude that the upper limit of recording density is 109 Gbit/in.2, which is equivalent to 151 Gbytes for a 12-cm-diameter disc, assuming the same redundancy as that of the Blu-ray disc format.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::298711723638243dd4e3c132c4834ae9 https://doi.org/10.1143/jjap.48.03a042 Zobrazit plný text záznamu