Optical-microwave converter: Superconductor/photomixer hybrid system

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A new type of optical-microwave converter utilizing a photomixer and a high-Tc Josephson junction detector has been developed. The frequency difference of two laser beams has been observed in the characteristic of the high-Tc Josephson junction detector. The measured response of the detector for the microwave generated by photomixing two lasers suggests that the system can work as a highly sensitive wavelength meter with accuracy of ±3.5 pm. The system operation up to 20 GHz was also demonstrated by changing the wavelength of two laser beams.




Kiwa, T., & Tonouchi, M. (2003). Optical-microwave converter: Superconductor/photomixer hybrid system. In IEEE MTT-S International Microwave Symposium Digest (Vol. 2, pp. 1363–1366). https://doi.org/10.1109/mwsym.2003.1212624

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