Optical time-division space switches using tree-structured directional couplers

4 July 1985

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 21 (14) , 631-632
https://doi.org/10.1049/el:19850446

Abstract

The letter proposes two optical time-division space-switch structures using tree-structured directional couplers. First-order approximations show that they have an excellent signal/crosstalk ratio and low-loss properties in a large matrix dimension. An experiment on a 4 × 4 switch using Ti:LiNbO₃ directional couplers is presented under the 128 Mbit/s condition.

Keywords

TREE-STRUCTURED DIRECTIONAL COUPLERS
LOW-LOSS PROPERTIES
LINBO3:TI
OPTICAL COMMUNICATION EQUIPMENT
TDM
INTEGRATED OPTICS
TIME-DIVISION SPACE SWITCHES
4×4 SWITCH
LARGE MATRIX DIMENSION
128 MBIT/S CONDITION