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학술지 Controlling Polarization of an Optical Carrier of Double Sideband-Suppressed Carrier Modulated Lightwave for Improving Characteristics of a Sub-Terahertz Continuous Wave Generated by Photomixing
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저자
김성일, 강광용
발행일
201103
출처
Microwave and Optical Technology Letters, v.53 no.3, pp.626-630
ISSN
0895-2477
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/mop.25795
협약과제
11PR2800, 테라헤르츠대역 전파 환경 및 무선 전송 플랫폼 기술 연구, 정태진
초록
To improve characteristics of a sub-terahertz (THz) continuous wave (CW) as controlling polarization of an optical carrier for increase of optical carrier suppression levels, an orthogonally polarized extra optical signal with the same wavelength of an optical carrier was added to the double sideband-suppressed carrier modulated lightwave (DSB-SC).Compared with the traditional DSB-SC, the phase noise and output power characteristics of the sub-THz CW were improved about 3 dB (50%) at 10 KHz offset frequency and about 2 dB (37%) at 0.1 THz center frequency. Consequently, the controlling polarization technique of the optical carrier can be helpful to make the cost-saving sub-THz systems without high-cost optical filters to increase the optical carrier suppression levels. © 2011 Wiley Periodicals, Inc.
키워드
continuous wave, controlling polarization, DSB-SC, photomixing, sub-terahertz
KSP 제안 키워드
0.1 THz, Center frequency, Optical filters, Optical signal, Output power, Polarization technique, Power characteristics, Sub-THz, continuous wave(CW), double sideband, optical carrier suppression