1 September 1991 Novel technique for the measurement of coupling length in directional couplers
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Abstract
A novel technique to determine the coupling length as a function of wavelength in directional couplers, especially in the case of weakly coupled, symmetrical directional couplers, is described. The technique is illustrated by using Ag+ - Na+ ion-exchanged directional couplers in BK7 glass. Application of this technique to asymmetrical directional couplers is also addressed.
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Hsing-Chine Cheng, Hsing-Chine Cheng, Ramu V. Ramaswamy, Ramu V. Ramaswamy, "Novel technique for the measurement of coupling length in directional couplers", Proc. SPIE 1474, Optical Technology for Signal Processing Systems, (1 September 1991); doi: 10.1117/12.44933; https://doi.org/10.1117/12.44933
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