Title :
Polymeric digital optical switch incorporating linear branch with modified coupling region
Author :
Lee, Sang-Shin ; Shin, Sang-Yung
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
7/22/1999 12:00:00 AM
Abstract :
A digital optical switch in electro-optic polymer has been proposed and fabricated by incorporating a linear branch with a modified coupling region. The refractive index profiles in the coupling region of the branch have been adjusted adiabatically to enhance the switching performance by utilising post-fabrication photobleaching. Consequently, the drive voltage was reduced by more than 40% and the crosstalk improved by as much as 6 dB
Keywords :
electro-optical switches; optical planar waveguides; optical polymers; optical saturable absorption; electro-optic polymer; improved crosstalk; linear branch; mode coupling; modified coupling region; polymeric digital optical switch; post-fabrication photobleaching; reduced drive voltage; refractive index profiles; switching performance;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990863
