For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
Readout Characteristics of a Track Servo Signal by an Optically Switched Laser Diode Head
Hiroo UKITA Yoshihiro ISOMURA Hidenao TANAKA
IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/04/25
Print ISSN: 0000-0000
Type of Manuscript: Special Section LETTER (Special Issue on 1989 Spring National Convention IEICE)
Full Text: PDF>>
Some sampled servo signal characteristics of an optically switched laser diode (OSL) head are examined. Wobbling signal amplitude increases with bias current and is proportional to the light beam deviation from a track center at around the threshold current corresponding to the low reflection part of the medium. It is confirmed that OSL head tracking can be realized using the sampled servo method.