Magneto-optical disk pick-up device having mode splitter using c

Details Magneto-optical disk pick-up device having mode splitter using c Magneto-optical disk pick-up device having mode splitter using c

1995-11-21

1997-07-29

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369112, 385 28, 385 43, G11B 1100, G02B 626

Patent

active

056527373

ABSTRACT:
A mode splitter and the magneto-optical pick-up device including the mode splitter. The mode splitter includes a tapered waveguide portion whose thickness gradually becomes thin so that a light of at least one mode can be cut off. An emission position of a light wave can be varied depending on its mode. In this mode splitter, the emission position of the light wave of each mode can be adjusted by changing a thickness of the tapered waveguide, thereby improving the degree of freedom in designing the device.

REFERENCES:
patent: 3617109 (1971-11-01), Tien
patent: 4943129 (1990-07-01), Takeda et al.
patent: 5065390 (1991-11-01), Miyauchi et al.
patent: 5208800 (1993-05-01), Isobe et al.
patent: 5276745 (1994-01-01), Revelli, Jr.
patent: 5323476 (1994-06-01), Mueller et al.
patent: 5509094 (1996-04-01), Minami et al.

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