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Integrated four-channel Mach-Zehnder multi/demultiplexer fabricated with phosphorous doped SiO2 waveguides on Si

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6 Author(s)
Verbeek, B.H. ; AT&T Bell Labs., Murray Hill, NJ, USA ; Henry, C.H. ; Olsson, N.A. ; Orlowsky, K.J.
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An analysis and the device performance of an integrated optical 4-channel multi/demultiplexer based on Mach-Zehnder interferometers elements are presented. The channel spacing is 77 Å. Single-mode channel waveguides are made from P-doped SiO2 core layers. Waveguide losses as low as 0.05 dB/cm and fiber-to-waveguide butt coupling as low as 0.5 dB for λ=1.5 μm have been obtained. The multiplexer transfers power from four input channels into a common output channel with an average fiber-to-fiber loss of 2.6 dB per channel. The average crosstalk of the demultiplexer is -16 dB

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Lightwave Technology, Journal of  (Volume:6 ,  Issue: 6 )