Ultra-sensitive Chip-based Photonic Temperature Sensor Using Ring Resonator Structures
COPENHAGEN UNIV (DENMARK)
Pagination or Media Count:
Resistance thermometry provides a time-tested method for taking temperature measurements. However, fundamental limits to resistance-based approaches has produced considerable interest in developing photonic temperature sensors to leverage advances in frequency metrology and to achieve greater mechanical and environmental stability. Here we show that silicon-based optical ring resonator devices can resolve temperature differences of 1 mK using the traditional wavelength scanning methodology. An even lower noise floor of 80 K for measuring temperature difference is achieved in the side-of-fringe, constant power mode measurement.
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods
- Fiber Optics and Integrated Optics