Title :
Polarisation insensitive and tuneable optical add and drop multiplexer utilising vertically stacked buried semiconductor waveguides
Author :
Horita, M. ; Yazaki, T. ; Tanaka, S. ; Matsushima, Y.
Author_Institution :
KDD Kamifukuoka R&D Labs., Saitama, Japan
fDate :
9/30/1999 12:00:00 AM
Abstract :
A polarisation insensitive and tuneable optical add and drop multiplexer has been realised by utilising vertically stacked buried semiconductor waveguides. The difference in peak wavelength of the dropped light between the two orthogonal polarisations was as small as 0.03 nm, which is much smaller than the 3 dB bandwidth of 0.4 nm. The difference in peak power was also as small as 0.7 dB. Furthermore, the polarisation insensitivity was maintained even during wavelength tuning
Keywords :
MOCVD; light polarisation; multiplexing equipment; optical communication equipment; optical directional couplers; optical fabrication; optical tuning; optical waveguide filters; semiconductor devices; sputter etching; telecommunication network routing; vapour phase epitaxial growth; wavelength division multiplexing; bandwidth; dropped light; orthogonal polarisations; peak power; peak wavelength; polarisation insensitive multiplexer; polarisation insensitivity; tuneable optical add and drop multiplexer; vertically stacked buried semiconductor waveguides; wavelength tuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991207
