Random pattern signal characteristics of super-RENS disk in blue laser system

Jooho Kim; Inoh Hwang; Hyunki Kim; Duseop Yoon; Hyun-Soo Park; Kiuhae Jung; Insic Park; Junji Tominaga

doi:10.1117/12.557100

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9 September 2004 Random pattern signal characteristics of super-RENS disk in blue laser system

Jooho Kim, Inoh Hwang, Hyunki Kim, Duseop Yoon, Hyun-Soo Park, Kiuhae Jung, Insic Park, Junji Tominaga

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Proceedings Volume 5380, Optical Data Storage 2004; (2004) https://doi.org/10.1117/12.557100
Event: Optical Data Storage Topical Meeting, 2004, Monterey, California, United States

Abstract

We report the random pattern signal characteristics of the super resolution near field structure (Super-RENS) disk in a blue laser optical system. (Laser wavelength 405 nm, numerical aperture 0.85) We introduced new structure for blue laser system, which results in 43 dB carrier to noise ratio (CNR) at the 75 nm mark length signal (which is equivalent to 50 GB capacity with 0.32 micrometer track pitch) and much better readout stability were obtained. The relatively clear eye pattern, phase locked loop (PLL) state and data to clock jitter of around 20% for a 50 GB (2T:75 nm) random pattern signal were realized.

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Jooho Kim, Inoh Hwang, Hyunki Kim, Duseop Yoon, Hyun-Soo Park, Kiuhae Jung, Insic Park, and Junji Tominaga "Random pattern signal characteristics of super-RENS disk in blue laser system", Proc. SPIE 5380, Optical Data Storage 2004, (9 September 2004); https://doi.org/10.1117/12.557100

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