Title :
Low-crosstalk 2×2 digital optical switch
Author :
Okayama, Hideaki ; Kawahara, Masaaki
Author_Institution :
R&D Group, Oki Electr. Ind. Co. Ltd., Tokyo
fDate :
3/3/1994 12:00:00 AM
Abstract :
The development of a low-crosstalk 2×2 digital optical switch is reported. The device is a composite structure composed of four low-drive-voltage Y-branch digital optical switches and an asymmetric X-junction. A minimum crosstalk level of -37 dB was achieved in the TM mode, while in the TE mode the level was -42 dB. The voltage-total-length product is identical to that of a conventional 2×2 digital optical switch operating at a given level of crosstalk
Keywords :
crosstalk; electro-optical devices; integrated optics; optical switches; optical waveguides; 2×2 digital optical switch; TE mode; TM mode; asymmetric X-junction; composite structure; low-crosstalk; low-drive-voltage Y-branch digital optical switches; minimum crosstalk level; voltage-total-length product;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940299
