Crosstalk reduced by new types of optical filtering

Takeshi Shimano; Kouichirou Wakabayashi; Tohru Sasaki; Takeshi Nakao

doi:10.1117/12.280694

30 July 1997 Crosstalk reduced by new types of optical filtering

Takeshi Shimano, Kouichirou Wakabayashi, Tohru Sasaki, Takeshi Nakao

Proceedings Volume 3109, Optical Data Storage 1997 Topical Meeting; (1997) https://doi.org/10.1117/12.280694
Event: Optical Data Storage Topical Meeting '97, 1997, Tucson, AZ, United States

Abstract

It is found that there is the region in the exit pupil of the objective lens where waveform polarity of crosstalk from adjacent tracks is inverted from that of total crosstalk. Additionally, the regions that contribute to the total signal of fine mark pattern are separated into two regions with a gap remaining along the radial direction of the disk. Shading or polarity inversion in the region neither this signal region nor inverted crosstalk region reduces the crosstalk from adjacent tracks without reducing the signal of a fine mark patterns.

Citation Download Citation

Takeshi Shimano, Kouichirou Wakabayashi, Tohru Sasaki, and Takeshi Nakao "Crosstalk reduced by new types of optical filtering", Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); https://doi.org/10.1117/12.280694

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