Semiconductor device comprising a directional coupler for the TE

Details Semiconductor device comprising a directional coupler for the TE Semiconductor device comprising a directional coupler for the TE

1990-07-20

1991-11-19

Sikes, William L.

Optical waveguides

With optical coupler

Particular coupling structure

G02B 610

Patent

active

050660861

ABSTRACT:
An integrated semiconductor device including a directional optoelectronic coupler, which coupler comprises two parallel single-mode rectilinear optical waveguides over a total length D, separated by a small distance d, which coupler also comprises four electrodes of the same conductivity type, two on each waveguide, and at least one other electrode of the opposite conductivity type, characterized in that the coupler has an operation which is independent of the transverse electrical and transverse magnetic radiation components, TE and TM, respectively, present in random proportions in the incoming signal, under the condition in which the structural parameters of the coupler render it possible to ensure that the following relations are true: ##EQU1## In which relations: Z is the dimension of each electrode on the waveguides,

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