Title :
Extinction ratio degradation due to asymmetry in zero-gap directional coupling and crossing channel switches
Author :
Goel, Kamal ; Chang, William S C
Author_Institution :
University of California, San Diego, CA, USA
fDate :
12/1/1987 12:00:00 AM
Abstract :
In this paper we will show theoretically that the mode conversion in converging and diverging channels caused by the asymmetry produced in the fabrication processes is limiting the extinction ratio of single-mode crossing channel switches. Degradation of the extinction ratio is caused primarily by asymmetry in the transition regions of the switches.
Keywords :
Optical directional couplers; Degradation; Directional couplers; Extinction ratio; Interference; Lithography; Optical device fabrication; Optical devices; Optical switches; Partial differential equations; Titanium;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1987.1073294
