Title :
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
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;
Conference_Titel :
Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on
Print_ISBN :
0-7803-7379-0
DOI :
10.1109/OMODS.2002.1028644
