OXC query

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i am doing some research on the Optical switch/router architecture and   =
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i have the foll questions =2C
i would appreciate any help in solving these =

 1  how are the multiple wavelengths per port mapped to bandwidth=3F =

 2 how many types of switching are suported in an Opticalk switch=3F  =

        wavelength=2C TDM=2C DWDM  =3F=3F=3F=3F =

 3 a) How are the TDM clients supported using O-UNI=3F  =

 3 b) how are multiple TDM  channels mapped onto wavelength/lambda       =
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      =26 how are they demuxed  at the receiving end=3F

thanks in advance
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