{HEAD ~ The invention} further comprises a method for switching of {TAIL ~ wavelength channels} through the use of said multi wavelength selective switch 
{ HEAD ~ The invention } further comprises a method for switching of { TAIL ~ wavelength channels } through the use of said multi wavelength selective switch
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH