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A high-birefringence linearly chirped fiber Bragg grating (FBG) is written into a polarization-maintaining photosensitive fiber by ultraviolet (UV) beam through a linearly chirped phase mask. Its performance as group velocity dispersion (GVD) and polarization mode dispersion (PMD) compensator is demonstrated in short pulse fiber optical transmission systems. 相似文献
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A new structure of highly birefringent honeycomb photonic bandgap fibres (PBGFs), including an elliptical air hole in its solid core, is proposed and analysed by using full vectorial plane wave expansion method. From the numerical results it is confirmed that the proposed PBGF. has birefringence of the order of 10^-3. Moreover, there are two single-polarization single-mode ranges at varying normalized wavelength, in one of which only the slowaxis mode exists, and in the other only the fast-axis mode exists, which has not been achieved in index-guiding photonic crystal fibres so far. 相似文献
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The system of L-band 2 × 10 Gb/s WDM transmission over conventional single mode fibre with 600 km by chirped fibre Bragg gratings dispersion compensation 下载免费PDF全文
A chirped fibre Bragg grating according to ITU-T suggested L-band (2nd channel λ1 = 1570.83 nm; 80th channel λ2 = 1603.57 nm) with more than 1800 ps/nm single channel dispersion compensation is presented in this paper, of which the cladding mode loss, the delay curve ripple and the power fluctuation of the reflected spectrum are less than 0.5 dB, 50 ps and 0.25 dB, respectively. With this new FBG as dispersion compensation device, a 2 × 10 Gb/s wavelength division multiplexing (WDM) L-band transmission of 600 km based on conventional single mode fibre (G.652 fibre) is performed without forward error correction. The bit error rate (BER) is less than 10-12 and the power penalties of the 2nd and 80th channel of L-band are 1.8 dB and 2.0 dB, respectively. 相似文献
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一种新结构高双折射光子晶体光纤 总被引:1,自引:1,他引:1
提出了一种新结构的高双折射光子晶体光纤,通过引入掺氟实心圆的方式形成双折射,而不采用大多数高双折射光子晶体光纤中引入不同孔径空气孔或椭圆空气孔的结构。应用全矢量平面波法对其基模场分布、模式截止以及各种结构参量对模式双折射特性的影响进行了详细的分析和讨论。结果表明,该结构光子晶体光纤可以在较宽波长范围内产生10-3量级的模式双折射,且通过调节孔径,可以灵活地将双折射最高点调整到所需的波长上。另外,该结构高双折射光子晶体光纤在拉制工艺、光纤强度以及光纤熔接等方面也具有一定的优势。 相似文献
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