Title :
Determination of the coupling length in directional couplers from spectral response
Author :
Cheng, Hsing C. ; Ramaswamy, Ramu V.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
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/sup +/-Na/sup +/ ion-exchanged directional couplers in BK7 glass. Application of this technique to asymmetrical directional couplers is also addressed.<>
Keywords :
directional couplers; optical couplers; optical glass; Ag/sup +/-Na/sup +/ ion-exchanged directional couplers; asymmetrical directional couplers; coupling length; glass; spectral response; wavelength; weakly coupled symmetrical directional couplers; Communication switching; Directional couplers; Fabrication; Glass; Optical devices; Optical fiber communication; Optical modulation; Optical switches; Optical waveguides; Power dividers;
Journal_Title :
Photonics Technology Letters, IEEE
