Mode splitter and a magneto-optical disk pick-up device having t

Details Mode splitter and a magneto-optical disk pick-up device having t Mode splitter and a magneto-optical disk pick-up device having t

1994-03-16

1996-04-16

Bovernick, Rodney B.

Optical waveguides

With optical coupler

Particular coupling function

385 28, 385 43, G02B 626

Patent

active

055090940

ABSTRACT:
A mode splitter and the magneto-optical pick-up device including the mode splitter are provided. 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: 5208800 (1993-05-01), Isobe et al.
patent: 5276745 (1994-01-01), Ravelli, Jr.
patent: 5323476 (1994-07-01), Mueller et al.

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