Title :
Optical-microwave converter: superconductor/photomixer hybrid system
Author :
Kiwa, T. ; Tonouchi, M.
Author_Institution :
Res. Center for Supercond. Photonics, Osaka Univ., Japan
Abstract :
A new type of optical-microwave converter utilizing a photomixer and a high-T/sub C/ Josephson junction detector has been developed. The frequency difference of two laser beams has been observed in the characteristic of the high-T/sub C/ 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 /spl plusmn/3.5 pm. The system operation up to 20 GHz was also demonstrated by changing the wavelength of two laser beams.
Keywords :
microwave frequency convertors; microwave measurement; microwave photonics; optical frequency conversion; superconducting junction devices; superconducting microwave devices; superconducting mixers; 20 GHz; high-transition temperature Josephson junction detector; laser beam frequency difference; laser beam wavelength change; laser photo mixing; measurement accuracy; microwave detector response; optical-microwave converter; superconductor/photomixer hybrid system; system operation; wavelength meter; Distributed feedback devices; Electromagnetic heating; Frequency; Josephson junctions; Laser theory; Masers; Microwave generation; Optical beams; Optical sensors; Superconducting microwave devices;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212624
