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8 x 8 optical switch matrix using generalized Mach-Zehnder interferometers

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6 Author(s)
Earnshaw, M.P. ; Agere Syst., Murray Hill, NJ, USA ; Soole, J.B.D. ; Cappuzzo, M. ; Gomez, L.
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We report an 8/spl times/8 strictly nonblocking optical cross connect (OXC) using multimode imaging (MMI)-based generalized Mach-Zehnder (MZ) interferometers realized in the silica-on-silicon planar waveguide system. Employing a router-selector architecture, this MMI-MZ OXC design results in a significantly smaller device than conventional directional-coupler based implementations. An average insertion loss of 6 dB and crosstalk of -34 dB, is demonstrated for the 8/spl times/8 OXC.

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Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 6 )