ROADM switching technologies

■Wavelength Selectable Switch Technologies -MEMS, LCoS, LC, DLP -Each has design strengths and weaknesses ∂MEMS: strong isolation, small size, low IL, challenged atten accuracy ∂LCoS: strong atten accuracy, flex spectrum, challenged isolation ∂LC: strong atten accuracy, challenged size ∂DLP: small size, flex spectrum, limited port count ■Colorless, Directionless, Contentionless Networks -More efficient use of infrastructure -Requires more complex wavelength switching components ∂Higher port count ∂Multiple input, multiple output