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Conferences > IGWO > 1989 > WAA > WAA7

The Extinction Ratio in Optical Two-Guide Δβ Couplers*

J. P. Donnelly, L. A. Molter, G. S. Hopcraft, R. E. Smith, and H. A. Haus

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Abstract

Conventional coupled-mode theory1 predicts that ideal switching with complete extinction can be achieved in any Δβ coupler with two antisymmetrically detuned sections of equal length provided that the total length is between one and three synchronous coupling lengths Lc. In practice, however, ideal switching can not generally be obtained using this mode of operation and other operating parameters, such as asymmetric detuning, must be employed to obtain an optimum extinction ratio2.

© 1989 Optical Society of America

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