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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