S. Toyoda et al., Low crosstalk and low loss 2x2 thermo-optic digital optical switch using silicone resin waveguides, ELECTR LETT, 36(21), 2000, pp. 1803-1804
The authors have developed a 2x2 digital optical switch (DOS) composed of f
our 1x2 DOS elements using silicone resin waveguides. The 2x2 DOS operated
with a switching power of 380mW, a very low crosstalk of less than -60dB, a
nd a low insertion loss of less than 2.5dB at 1.55 mum.