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WDM/SCM RoF 시스템에서 광 주입 기술을 적용한 피드포워드 아날로그 광송신기의 파장차이에 따른 상호변조 왜곡성분의 특성 분석Analysis of Intermodulation Distortion for Wavelength-Dependence Transmission Experiment of a Feedforward Analog Optical Transmitter with External Light Injection Method in WDM/SCM RoF Systems
- Issue Date
- 2008
- Publisher
- 대한전자공학회
- Keywords
- 피드포워드 보상기법; 아날로그 광송신기; 3차 상호변조 왜곡성분; 광 주입 기법
- Citation
- 전자공학회논문지 - SD, v.45, no.5, pp 33 - 39
- Pages
- 7
- Journal Title
- 전자공학회논문지 - SD
- Volume
- 45
- Number
- 5
- Start Page
- 33
- End Page
- 39
- ISSN
- 1229-6368
- Abstract
- We have experimentally demonstrated the transmission performance of a feedforward optical transmitter using an external light injection technique. The feedforward compensation method shows 31 dB intermodulation distortion suppression and 2.2 dB noise reduction. A high side-mode suppression ratio exceeding 35 dB of the wavelength of the locked Fabry-Perot laser diode was obtained over 12 nm ranges. The suppression characteristics of the intermodulation distortion for various wavelength differences and transmission lengths were measured and analyzed as the evaluation criteria for the system performance in WDM/SCM based radio-over-fiber systems.
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