Recent work on highly integrated silica-based thermo-optic PLC-switches is reviewed. N x N switches (up to 16 x 16), 1 x N switches (up to 1 x 128), 8 x 8 and 128 x 128 switching sub-systems, a monolithic optical add/drop multiplexer and related reliability tests are described.

© 2003 Optical Society of America

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