Optical switch and path switching method

Details Optical switch and path switching method Optical switch and path switching method

2005-10-25

2009-06-09

Pak, Sung H (Department: 2874)

Optical waveguides

With optical coupler

Switch

C385S004000, C385S008000, C385S016000

Reexamination Certificate

active

07546005

ABSTRACT:
An optical switch not having waveguide crossings, as in a matrix switch, enabling input/output path switching of N×N, and not increasing the optical loss or the size when the number of channels increases. The optical switch includes plural input ports10and plural output ports17and has a path switching function of the planar waveguide type. The input ports are connected to one ends of respective different sub-slab optical waveguides12. The opposite side ends of the sub-slab optical waveguides12are optically coupled to one end of a common main slab optical waveguide15via arrayed optical waveguides14. To the opposite side end of the main slab optical waveguide15are connected plural output ports17. On the top of the arrayed optical waveguides14, there are respectively arranged electrodes13, each causing the difference in the refractive index of the respective optical waveguide.

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