Component · Photonics, MEMS & Sensors
Thermo-optic phase shifter
A resistive heater placed over or beside a waveguide that shifts optical phase by changing the local refractive index with temperature. It is the standard tuning element in silicon photonic circuits.
- Also known as
- Heater, TO phase shifter
- Type
- Component
- Domain
- Photonics, MEMS & Sensors, Silicon photonics
Notes
Efficient and low loss but slow (microseconds) and power hungry, which is why high-speed modulation uses carrier effects instead.
Related terms
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