Integrated optical directional coupler

Details Integrated optical directional coupler Integrated optical directional coupler

2005-07-19

2005-07-19

Kaveh, Kianni C (Department: 2833)

Optical waveguides

With optical coupler

Particular coupling structure

C385S028000, C385S042000

Reexamination Certificate

active

06920266

ABSTRACT:
The construction of directional couplers according to the invention with the aid of integrated optical waveguides makes it possible to produce such directional couplers in series very compactly and relatively easily. In this connection, the integrated optical waveguides in the coupling region have a smaller cross section than the cross section outside the coupling region. Consequently, it is possible to keep the spacing of the waveguide segments in the coupling region of a directional coupler according to the invention sufficiently far away from one another to minimize the error tolerance conditions in the manufacturing process. This is particularly advantageous if the difference in the refractive indices between the core of the integrated optical waveguide and its surroundings is very large.

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