Project supervisor: Yoav Hazan
yoav.hazan@campus.technion.ac.il
In the development of Electro-Optic Modulated Pulse Interferometry (EOM-PI) emerged the need for the development of a technique for sampling the EOM-PI signal with low bandwidth sampler (~10MHz) rather than the 1.5GHz sampling bandwidth implemented today. Furthermore, a development of demodulation algorithm for the sampled signals to retrieve signal’s phase.
Project Status: Finished
Project requirements:
- Development of signal analysis process to achieve 2-channel sampling of low bandwidth of ~10MHz from a 1-channel 1.5GHz original signal. The two sampling channels are in the surrounding of the DC and the EOM frequency (125MHz).
- Development of signal demodulation algorithm to retrieve the signal’s phase from the 2-channel sampling, where the two signals will be in the form of: and . The demodulation algorithm should be able to handle either DC-coupled measurement and AC-couple measurement.
Advancement options:
- Designing an electrical circuit that will operate as developed in the first project requirement.
Recommended readings:
- Hazan, Yoav, and Amir Rosenthal. “Passive-demodulation pulse interferometry for ultrasound detection with a high dynamic range.” Optics letters5 (2018): 1039-1042.
- Rosenthal, Amir, Daniel Razansky, and Vasilis Ntziachristos. “Wideband optical sensing using pulse interferometry.” Optics Express17 (2012): 19016-19029.