Electro-optical directional coupler with three electrodes and al

Details Electro-optical directional coupler with three electrodes and al Electro-optical directional coupler with three electrodes and al

1984-05-10

1987-03-24

Sikes, William L.

350 9613, G02B 610

Patent

active

046520783

ABSTRACT:
The electrode structure comprises in each section three parallel microbands of identical width, the first and second microband covering first and second optical guides respectively and being separated by a width giving to the propagating line which they form a characteristic impedance equal to the required adaptation impedance; the third microband is far enough away from the second band for the contribution of the former to such characteristic impedance to be negligible. The covering of the first and second optical guides by the first and second microbands alternates from one section to the next section and the passage from a first section to a second section is obtained by a transition zone comprising inclined microbands.

REFERENCES:
patent: 3909108 (1975-09-01), Taylor
patent: 4448479 (1984-05-01), Alferness
patent: 4468086 (1984-08-01), Liu
Applied Physics Letters, vol. 28, No. 9, (May 1, 1976), R. V. Schmidt et al, "Electro-Optically Switched Coupler With Stepped Beta Reversal Using Ti-diffused LiNb03 Waveguides," pp. 503-506.

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