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Chromatic Dispersion Compensation via Mid-span Spectral Inversion with Periodically Poled LiNbO3 Wavelength Converter at Low Pump Power
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- 발행일
- 200506
- 출처
- ETRI Journal, v.273, pp.312-318
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 04MB2700, 40G 모듈(테라비트 통신용 InP RF 집적회로 기술개발), 이명현
- 초록
- Mid-span spectral inversion (MSSI) has to utilize high optical pump power, for its operation principle is based on a nonlinear optical wavelength conversion. In this paper, a low pump-power operation of MSSI-based chromatic dispersion compensation (CDC) has been achieved successfully, for the first time to our knowledge, by introducing a noise pre-reduction scheme in cascaded wavelength conversions with periodically poled LiNbO3 waveguides at a relatively low operation temperature. As preliminary studies, phase-matching properties and operation-temperature dependence of the wavelength converter (WC) were characterized. The WC pumped at 1549 nm exhibited a wide conversion bandwidth of 59 nm covering the entire C-band and a conversion efficiency of-23.6 dB at 11 dBm pump power. CDC experiments were implemented with 2.5 and 10 Gb/s transmission systems over 100 km single-mode fiber. Although it is well-known that the signal distortion due to chromatic dispersion is not critical at a 15 Gb/s transmission, the dear recovery of eye patterns was identified. At 10 Gb/s transmission experiments, eye patterns were retrieved distinctly from seriously distorted ones, and notable improvements in bit-error rates were acquired at a low pump power of 14 dBm.
- KSP 제안 키워드
- AND operation, C-band, Chromatic Dispersion compensation, Chromatic dispersion(CD), Conversion efficiency(C.E.), Mid-span, Nonlinear optical, Operation principle, Operation temperature, Optical wavelength conversion, Phase-matching properties
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