An optical flying head for a near-field recording system: part II

Author

Mizuno, Takeshi ; Sako, Kageyasu ; Noshiro, Teruhito ; Kato, Hideo ; Kojima, Naoto ; Hitosugi, Taro ; Yamazaki, Shigeru ; Watanabe, Kenjiro

Author_Institution

Core Technol. Dev. Center, Sony Corp., Tokyo, Japan

fYear

2002

fDate

2002

Firstpage

290

Lastpage

292

Abstract

At the last ODS 2001, we reported a SIL-embedded optical flying head combined with fiber optics for a near-field recording (NFR) system (Tech. Dig. Optical Data Storage, April 2001). We report further study of an optical flying head without fiber optics for a near-field recording system. After describing the configuration of the optical flying head, the readout signals and tolerances are presented. The C/N (carrier to noise) ratio was 49.53 dB for 0.2 gm of the mark length. The tolerances of relative tilt and decenter were ±1deg and ±100 gm, respectively. We think a more practical head structure can be realized by miniaturizing the condensing optics on the flying head.

Keywords

optical noise; optical signal detection; optical storage; optical testing; C/N ratio; NFR system; SIL-embedded optical flying head; carrier to noise ratio; condensing optics miniaturization; decenter tolerances; fiber optics; flying head structure; mark length; near-field recording system optical flying head; readout signals; relative tilt tolerances; Lenses; Magnetic heads; Optical collimators; Optical design; Optical fiber networks; Optical fibers; Optical films; Optical network units; Optical propagation; Optical recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

Print_ISBN

0-7803-7379-0

Type

conf

DOI

10.1109/OMODS.2002.1028644

Filename

1028644