| 摘要 |
<p>An integrated optical device (100) for magneto-optic recording and/or reading comprises a substrate (10), a waveguide (22) on the substrate for transmitting a light energy beam and including a plurality of waveguide sections, a laser (11) for supplying a light energy beam to a first one of said waveguide sections for transmission toward an end portion of the waveguide that is exposed to the outside of the substrate, and detectors (51, 52) for receiving, from a second one of the waveguide sections branched from the first waveguide section, a light energy beam entering said end portion from a magneto-optic recording medium (102). The amount of light arriving at the detectors depends upon the light polarization. The optical device includes polarization controllers (24, 26; 32, 34), polarization-selective waveguide sections (E-F, E-G), and laser-waveguide-detector combinations (12, 62, 64, 53, 54; 13, 66, 68, 55, 56) for tracking and focusing.</p> |
