Optical data storage device using solid immersion lens and waveguide grating coupler

摘要

PURPOSE: An optical data storage device using an SIL(Solid Immersion Lens) and a waveguide diffraction grating coupler is provided to install an optical storage head device combining the waveguide diffraction grating coupler with the SIL and a cartridge, and to use an optical fiber for inducing light, thereby obtaining high storage density without polluting a head of an optical storage device and a storage medium. CONSTITUTION: A recording medium(101) rotates on the basis of the first rotation hub in a cartridge. One end of a rotary arm(102) is fixed into the second rotation hub in the cartridge. A flying head(104) is attached to a free end of the rotary arm, and writes data on the recording medium or reads the data from the recording medium. An optical waveguide is installed up to outside of the cartridge from the flying head. The rotary arm rotates within an angle where the rotary arm is capable of guiding the flying head up to an utmost inner track from an utmost outer track of the cartridge.