Title :
Novel polarisation independent tunable optical filter with yield compensation after fabrication
Author :
Wu, C. ; Wu, C.-M. ; Knight, D.G. ; Blaauw, C. ; Puetz, N. ; Shepherd, F. ; Rabikovs, G. ; Chik, K.D.
Author_Institution :
Bell-Northern Res., Ottawa, Ont., Canada
fDate :
2/2/1995 12:00:00 AM
Abstract :
A novel polarisation independent tunable optical filter using a grating-assisted, InGaAsP/InP directional coupler is demonstrated experimentally. Such a coupler is made of three planar coupled hetero-material waveguides. This type of filter has advantages of yield compensation after fabrication, narrow bandwidth, potentially broad tuning range and low crosstalk between TE/TM modes
Keywords :
III-V semiconductors; compensation; electro-optical filters; gallium arsenide; gallium compounds; indium compounds; light polarisation; optical crosstalk; optical directional couplers; optical fabrication; optical planar waveguides; optical waveguide filters; refractive index; tuning; InGaAsP-InP; TE/TM modes; broad tuning range; fabrication; grating-assisted directional coupler; low crosstalk; planar coupled heteromaterial waveguides; polarisation independent optical filter; tunable optical filter; yield compensation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950108
