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GaInAsP/InP zero-gap directional couplers as compact optical WDM filters

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6 Author(s)
Schienle, M. ; Siemens AG, Res. Lab., Munich, West Germany ; Stoll, L. ; Schulte-Roth, G. ; Mahlein, H.F.
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The fabrication and characterisation of extremely compact WDM zero-gap directional couplers with buried GaInAsP/InP waveguides is reported. A device with a centre length of 178 mu m separated two channels at lambda 1=1.3 mu m and lambda 2=1.52 mu m with a crosstalk attenuation of 30 dB.

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Electronics Letters  (Volume:25 ,  Issue: 17 )