公开(公告)号：CA2353744C

公开(公告)日：2004-06-01

申请号：CA2353744

申请日：2001-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DRAGONE CORRADO PIETRO

IPC: H04B10/02 ,  H04L12/56 ,  H04Q3/52 ,  H04Q11/00 ,  H04B10/20 ,  H04J14/02

Abstract: An N x N crossconnect switch, for large N, is implemented using an arrangement of smaller wavelength routers combined with space switches. An N x N crossconnect switch is constructed in three stages, using a plurality of inp ut space switches, a plurality of (N/m) x(N/m) router (whose reduced size N/m allows efficient realization in integrated form), and a plurality of output space switches. I n the router, the number of wavelengths is reduced by a factor m. The input and output spa ce switches can be implemented using crossbar or Clos type construction. In one arrangement each modulator is combined with a small space switch consisting of 2 x 2 elements. Each space switch can be realized with negligible crosstalk by usi ng a dilated arrangement.