Abstract
A novel coupler-type demultiplexer fabricated by K/sup +/-ion exchange in soda-lime glass and applicable to three wavelengths with arbitrary wavelength spans is described. The output light-power extinction ratios of about -20 dB were measured for the operation wavelengths of 1.152, 1.310, and 1.523 mu m. A simple method of designing for the structure parameters is also presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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