| 摘要 |
<p>An optical information processing apparatus which includes a substrate (101) of a transparent material, first and second optical waveguides (102,103) formed on opposite faces of said transparent substrate (101), a light introducing device for introducing reflected light from an information writing medium into the first and second optical waveguides (102, 103), and a detecting device for detecting reproduction signal, tracking error signal and focusing error signal based on the reflected light introduced into the first and second optical waveguides (102, 103).</p> |
