Electrooptical directional coupler with traveling wave and alter

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350 9613, G02B 610

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active

047324457

ABSTRACT:
Electrooptical directional coupler with traveling wave and alternating phase shift. This coupler comprises a central electrode in the form of microstrip (MB) of width W and two lateral electrodes (BL1, BL2) very wide in comparison with W. The propagation line then is asymmetrical.

REFERENCES:
patent: 4652078 (1987-03-01), Baratle et al.
Applied Physics Letters, vol. 45, No. 11, Dec. 1984, pp. 1168-1170, American Institute of Physics, New York, U.S., R. A. Becker: "Traveling-Wave Electro-Optic Modulator with Maximum Bandwidth-Length Product".
Applied Physics Letters, vol. 28, No. 9, May, 1976, pp. 503-506, American Institute of Physics, New York, U.S.; R. V. Schmidt et al.: "Electro-Optically Switched Coupler with Stepped .DELTA..beta. Reversal Using Ti-Diffused LiNbO.sub.3 Waveguides".

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