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介绍用扫描法研制成功的长 13 5cm、带宽 0 44 7nm、反射谱平坦的切趾啁啾光纤光栅 ,功率波动小于1dB ,用色散分析仪测试得到时延曲线上的纹波系数小于 2 0 ps,用该光纤光栅对 2 0 0km的G 6 5 2光纤色散补偿 ,补偿量大于 98% (原始脉冲宽度为 36 78ps,色散补偿后的脉冲宽度为 37 2 3ps)。
The length of 13 5 cm, the width of 0 44 7 nm and the reflectivity flat chopped chirped fiber grating are introduced. The power fluctuation is less than 1 dB. The ripple coefficient of the delay curve is less than 20 ps . The fiber grating is used to compensate the G 6 5 2 fiber dispersion of 200km with the compensation amount greater than 98% (the original pulse width is 36 78ps and the dispersion compensated pulse width is 37 2 3ps).