Title :
Rectangularly configured 4×4 Ti:LiNbO3 matrix switch with low drive voltage
Author :
Sawaki, I. ; Shimoe, T. ; Nakamoto, Hiroyuki ; Iwama, Tsukasa ; Yamane, Takashi ; Nakajima, Hirochika
Author_Institution :
Fujitsu Lab. Ltd., Atsugi, Japan
fDate :
8/1/1988 12:00:00 AM
Abstract :
A matrix switch with a novel architecture has been demonstrated. A rectangularly configured 4×4 switch has been designed and fabricated on a 65-mm-long z-cut Ti:LiNbO3 chip. The average drive voltage of 16Δ β-reversal directional couplers is 9 V for a cross state and 20 V for a bar state. The drive voltage difference of 11 V is about half that of the conventional matrix switch. Drive voltage deviations are within ±0.5 V. The average insertion loss is 4.7 dB, and deviations for different paths are within ±0.3 dB, and deviations for different paths are within ±0.3 dB. The crosstalk of all crosspoint switches is also estimated based on crosstalk output measurements
Keywords :
integrated optics; lithium compounds; optical communication equipment; switching systems; titanium; LiNbO3; architecture; crosstalk; directional couplers; integrated optics; low drive voltage; matrix switch; optical communication; Communication switching; Insertion loss; Joining processes; Laboratories; Low voltage; Optical crosstalk; Optical switches; Optical waveguides; Telecommunication switching; Transmission line matrix methods;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
