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http://dx.doi.org/10.5515/KJKIEES.2010.21.6.617

Improvement of Phase Noise Characteristics of Continuous Wave in the Sub-Millimeter Bands Generated by Photomixing Using Polarization and Phase Mismatch  

Kim, Sung-Il (Terahertz Research Team, Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute)
Kang, Kwang-Yong (Terahertz Research Team, Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.6, 2010 , pp. 617-626 More about this Journal
Abstract
In this paper, we have proposed and experimentally performed a polarization and phase control method of an optical signal which has same wavelength with the optical carrier to improve phase characteristics of a continuous wave(CW) generated by the double sideband-suppressed carrier(DSB-SC) as one of the famous photomixing technique for making sub-millimeter and terahertz waves. A polarization and phase controlled optical signal has been coupled with the general DSB-SC on an optical coupler. The output of the optical coupler is then photomixed by a photomixer. From our analysis and measurement results, we have found that the amplitude of the generated sub-mm and terahertz CW signal is higher 1.5 dB and the phase noise is lower about 3 dB@10 kHz offset frequency than the general DSBSC. Consequently, since our proposed method has improved the amplitude and phase noise of CW signals in the sub-mm and terahertz bands, it can be helpful results to make low cost CW generator in sub-millimeter and subterahertz bands.
Keywords
Polarization; Phase; DSB-SC; Sub-mm Wave; CW; Photomixing;
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Times Cited By KSCI : 1  (Citation Analysis)
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