Abstract

Coherent interlayer cross talk and stray-light intensity of multilayer read-only-memory (ROM) optical disks are investigated. From results of scalar diffraction analyses, we conclude that layer separations above 10µm are preferred in a system using a 0.85 numerical aperture objective lens in terms of signal quality and stability in focusing control. Disk structures are optimized to prevent signal deterioration resulting from multiple reflections, and appropriate detectors are determined to maintain acceptable stray-light intensity. In the experiment, quadrilayer and octalayer high-density ROM disks are prepared by stacking UV-curable films onto polycarbonate substrates. Data-to-clock jitters of 7% demonstrate the feasibility of multilayer disk storage up to 200Gbytes.

© 2006 Optical Society of America

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  1. I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
    [CrossRef]
  2. A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
    [CrossRef]
  3. D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
    [CrossRef]
  4. W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
    [CrossRef]
  5. K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
    [CrossRef]
  6. K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
    [CrossRef]
  7. P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
    [CrossRef]
  8. T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.
  9. H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
    [CrossRef]
  10. N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
    [CrossRef]
  11. N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
    [CrossRef]
  12. K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
    [CrossRef]
  13. I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.
  14. T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
    [CrossRef]
  15. T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
    [CrossRef]
  16. S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
    [CrossRef]
  17. A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
    [CrossRef]

2005 (1)

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

2004 (3)

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

2003 (2)

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

2001 (4)

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

2000 (1)

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

1999 (1)

S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
[CrossRef]

1998 (1)

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

1994 (2)

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

Akahira, N.

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

Akiyama, T.

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

Aoshima, M.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

Aratani, K.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Bergmans, J. W. M.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Best, M. E.

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

Bruls, D. M.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Ciacci, M.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Coene, W. M. J.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Furuki, M.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Hashimoto, G.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Hattori, M.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Higuchi, T.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

Hirata, H.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

Hisada, K.

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

Hosoda, Y.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

Ichimura, I.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Imai, T.

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

Imaino, W. I.

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

Immink, A. H. J.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Inoue, H.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

Jansen, T.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Kahlman, J. A. H. M.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Kai, S.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Kasami, Y.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

Katsumura, M.

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

Kawakubo, O.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

Kitaura, H.

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

Kobayashi, S.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Kojima, R.

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

Komaki, T.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

Koppers, W.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Kouchiyama, A.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Kuribayashi, H.

S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
[CrossRef]

Lee, J.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Martens, H.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Maruyama, T.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Masuhara, S.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

Mishima, K.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

Miyanabe, S.

S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
[CrossRef]

Miyoshi, H.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

Nakagawa, K.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Nakano, A.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

Nakano, J.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

Nakao, T.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Narahara, T.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Narumi, K.

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

Nijboer, J.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Nishiuchi, K.

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

Nishiwaki, H.

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

Nomoto, T.

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

Ohsawa, S.

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

Osato, K.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Padiy, A.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Riani, J.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

Rosen, H. J.

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

Rubin, K. A.

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

Saito, K.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Shida, N.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

Shimpuku, Y.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Spruit, H.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Strand, T. C.

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

Takemoto, Y.

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

Tang, W. W.

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

Tsuchiya, K.

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

Uno, M.

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

Utsunomiya, H.

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

van Beneden, S. J. L.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

van den Enden, G. J.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

van den Oetelaar, R.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

van der Lee, A. M.

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

van Dijk, M.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

van Woudenberg, R.

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

Verschuren, C.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Vlutters, R.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Weijenbergh, P.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Woerlee, P.

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

Yamada, N.

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

Yamamoto, K.

S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
[CrossRef]

Yamasaki, T.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Yanagisawa, T.

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

Yasuda, K.

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

Yin, B.

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Yokogawa, F.

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

Yukumoto, T.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

Jpn. J. Appl. Phys. (7)

D. M. Bruls, A. H. J. Immink, A. M. van der Lee, W. M. J. Coene, J. Riani, S. J. L. van Beneden, M. Ciacci, J. W. M. Bergmans, and M. Furuki, "Two-dimensional optical storage: high-speed read-out of a 50 Gbyte single-layer optical disc with a 2D format using lambda=405 nm and NA=0.85," Jpn. J. Appl. Phys. 44, 3547-3553 (2005).
[CrossRef]

K. Nishiuchi, H. Kitaura, N. Yamada, and N. Akahira, "Dual-layer optical disk with Te-O-Pd phase-change film," Jpn. J. Appl. Phys. 37, 2163-2167 (1998).
[CrossRef]

T. Yanagisawa, T. Nomoto, S. Ohsawa, and F. Yokogawa, "Signal simulation of 25 Gbytes read-only optical disk system using a high numerical aperture objective lens," Jpn. J. Appl. Phys. 40, 1536-1541 (2001).
[CrossRef]

T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. J. van den Enden, J. A. H. M. Kahlman, M. van Dijk, and R. van Woudenberg, "Optical disc system for digital video recording," Jpn. J. Appl. Phys. 39, 912-919 (2000).
[CrossRef]

S. Miyanabe, H. Kuribayashi, and K. Yamamoto, "New equalizer to improve signal-to-noise ratio," Jpn. J. Appl. Phys. 38, 1715-1719 (1999).
[CrossRef]

A. Kouchiyama, K. Aratani, Y. Takemoto, T. Nakao, S. Kai, K. Osato, and K. Nakagawa, "High-resolution blue-laser mastering using an inorganic photoresist," Jpn. J. Appl. Phys. 42, 769-771 (2003).
[CrossRef]

N. Shida, T. Higuchi, Y. Hosoda, H. Miyoshi, A. Nakano, and K. Tsuchiya, "Multilayer optical read-only-memory disk applicable to Blu-ray disc standard using a photopolymer sheet with a recording capacity of 100 GB," Jpn. J. Appl. Phys. 43, 4983-4986 (2004).
[CrossRef]

Proc. SPIE (8)

K. Mishima, H. Inoue, M. Aoshima, T. Komaki, H. Hirata, and H. Utsunomiya, "Inorganic write-once disc with quadruple recording layers for Blu-ray disc system," in Optical Data Storage, M. O'Neill and N. Miyagawa, eds., Proc. SPIE 5069, 90-97 (2003).
[CrossRef]

P. Woerlee, W. Koppers, H. Martens, J. Nijboer, R. van den Oetelaar, H. Spruit, and P. Weijenbergh, "Format of an 8.5 GB double-layer DVD recordable disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 15-20 (2004).
[CrossRef]

H. Kitaura, K. Hisada, K. Narumi, K. Nishiuchi, and N. Yamada, "Multi-layer write-once media with Te-O-Pd films utilizing a violet laser," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 340-347 (2001).
[CrossRef]

N. Yamada, R. Kojima, M. Uno, T. Akiyama, H. Kitaura, K. Narumi, and K. Nishiuchi, "Phase change material for use in a rewritable dual-layer optical disk," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 55-63 (2001).
[CrossRef]

W. I. Imaino, H. J. Rosen, K. A. Rubin, T. C. Strand, and M. E. Best, "Extending the compact disk format to high capacity for video applications," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 254-259 (1994).
[CrossRef]

K. A. Rubin, H. J. Rosen, W. W. Tang, W. I. Imaino, and T. C. Strand, "Multilevel volumetric optical storage," in Optical Data Storage, D. K. Cambell, M. Chen, and K. Ogawa, eds., Proc. SPIE 2338, 247-253 (1994).
[CrossRef]

I. Ichimura, S. Masuhara, J. Nakano, Y. Kasami, K. Yasuda, O. Kawakubo, and K. Osato, "On-groove phase-change optical recording for a capacity of 25 GB," in Optical Data Storage, T. Hurst and S. Kobayashi, eds., Proc. SPIE 4342, 168-177 (2001).
[CrossRef]

A. Padiy, B. Yin, C. Verschuren, J. Lee, R. Vlutters, and T. Jansen, "Signal processing for 35 GB on a single-layer Blu-ray disc," in Optical Data Storage, B. V. K. Vijaya Kumar and H. Kobori, eds., Proc. SPIE 5380, 56-70 (2004).
[CrossRef]

Other (2)

T. Higuchi, T. Imai, N. Shida, H. Nishiwaki, and M. Katsumura, "50 Gbyte read-only dual-layer disk for the high NA objective lens and blue-violet lasers," in Proceedings of Optical Data Storage Topical Meeting (SPIE, 2001), pp. 31-33.

I. Ichimura, G. Hashimoto, K. Saito, T. Yamasaki, T. Yukumoto, T. Maruyama, and K. Osato, "Proposal for multi-layer Blu-ray disc structure," in Proceedings of International Symposium on Optical Memory (Japan Society of Applied Physics, 2004), pp. 52-53.

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Figures (16)

Fig. 1
Fig. 1

Scalar diffraction model representing multilayer disk structures. Illuminating beams converge onto layer m through intervening spacers.

Fig. 2
Fig. 2

Beam propagation in an optical disk. (a) Definition of coordinates. (b) Transmission and reflection on layers m and m + 1 .

Fig. 3
Fig. 3

Experimental setup with two discrete detection paths, i.e., astigmatic focusing error detection and simple converging detection. QWP, quarter-wave plate; HWP, half-wave plate; PBS, polarizing beam splitter; PD, photodetector; LD, laser diode; OEIC, optoelectronic integrated circuit; Anamo., anamorphic; CL, collimator lens.

Fig. 4
Fig. 4

Reflected light on a four-quadrant detector observed at layer 0 of a dual-layer ROM disk. (a) Calculated intensity distribution with a 20 µm spacer. (b) Intensity distribution with an 8 µm spacer.

Fig. 5
Fig. 5

Servo error signals influenced by the existence of an adjacent layer. (a) Stray-light intensity calculated for two kinds of normalized detector. (b) Focusing error (FE) signals fluctuate owing to coherent interlayer cross talk from the other layer.

Fig. 6
Fig. 6

Focusing error (FE) signals and sum signals for a dual-layer disk, calculated by adjusting focusing positions along the optical axis.

Fig. 7
Fig. 7

Example of a simulated eye diagram after limit equalization. Jitters are estimated by binarizing reproduced data and calculating standard deviations in the time domain.

Fig. 8
Fig. 8

Signal simulation on layer 0 of a dual-layer ROM disk. (a) Jitters with limit equalization (EQ) versus spacer thickness calculated for four detector sizes. (b) Stray-light intensity increases with thin spacers.

Fig. 9
Fig. 9

Signal simulation for a quadrilayer ROM disk. Jitters with limit equalization (EQ) versus center spacer thickness ( t 21 ) calculated on layer 0 for three reflectivities.

Fig. 10
Fig. 10

Multiple reflections observed in quadrilayer disk structures. (a) Mirroring point degrades reproduced signals of layer 0. (b) Multiple reflections become out of focus by stacking different spacers. PC, polycarbonate.

Fig. 11
Fig. 11

Example of the reflectivity design used to attain uniform signal amplitude. Absorption in spacers and reflective materials lowers achievable reflectivities.

Fig. 12
Fig. 12

Disk structures designed for multilayer ROMs. (a) Quadrilayer disk with a 70 µm cover sheet. (b) Octalayer disk with a 41 µm cover sheet. All information layers are located within the compensation range of the expander lens unit. PC, polycarbonate.

Fig. 13
Fig. 13

Simulated jitters of an octalayer ROM disk with limit equalization (EQ), compared with that of a single-layer disk.

Fig. 14
Fig. 14

Focusing error (FE) signal and sum signal for an octalayer disk, calculated by adjusting focusing positions along the optical axis.

Fig. 15
Fig. 15

Focusing error (FE) signals and sum signals observed during lock-in procedure to an octalayer disk. (a) Expander lens unit is adjusted to layer 7 to compensate spherical aberrations. (b) Expander lens unit is adjusted to layer 0.

Fig. 16
Fig. 16

Eye diagrams of a 200 Gbyte octalayer ROM disk taken after limit equalization. (a) Layer 7, (b) layer 5, (c) layer 1, (d) layer 0.

Tables (1)

Tables Icon

Table 1 Measured Jitters and Reflectivities of Quadrilayer and Octalayer Read-Only Memory Disks

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

u l + 1 ( r ) = ( k 0 2 π ) 2 + + + + u l ( r ) exp { i k 0 [ ( r r ) · p + h N 2 p x 2 p y 2 ] } d r d p ,
u m l ( r ) = r m ( r ) u m l ( r ) + t m ( r ) u m 1 l ( r ) ,
u m - 1 l ( r ) = t m ( r ) u m l ( r ) + r m * ( r ) u m - 1 l ( r ) ,
u m + 1 l + 1 ( r ) = r m + 1 ( r ) u m + 1 l + 1 ( r ) + t m + 1 ( r ) u m l + 1 ( r ) ,
u m l + 1 ( r ) = t m + 1 ( r ) u m + 1 l + 1 ( r ) + r m + 1 * ( r ) u m l + 1 ( r ) .
η SL R S / M 2 ,

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