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Deng Mao
Subscriber

Hi Amrita, 

There are two phase heaters we are trying to test. One is the traditional metal on top of the Si waveguide. Another one is based on doping region. The highly doped region is used as a resistor to generate heat and change the phase. For both cases, we would like to test the optical back reflection. 

Any advice would be helpful.

Thank you,

Deng