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Novel polarisation independent tunable optical filter with yield compensation after fabrication

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8 Author(s)
C. Wu ; Bell-Northern Res., Ottawa, Ont., Canada ; C. -M. Wu ; D. G. Knight ; C. Blaauw
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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

Published in:

Electronics Letters  (Volume:31 ,  Issue: 3 )