光学学报, 2004, 24 (8): 1091, 网络出版: 2006-06-12
40Gb/s 光时分复用传输光纤光栅补偿色散研究 下载: 502次
Study on Dispersion Compensation of 40 Gb/s Optical Time Division Multiplexing Transmission Over G.652 Fiber
光纤通信技术 40 Gb/s光时分复用 低偏振模色散啁啾光纤光栅 偏振模色散补偿写入法 optical communication technology 40 Gb/s optical time division multiplexing low polarization mode dispersion chirped fiber Br polarization mode dispersion-compensation written
摘要
用精密扫描掩模法写入宽阻带啁啾光纤光栅,掩模板背面两端各10%长度处镀有按4阶高斯函数透过率的膜,写入的啁啾光栅的时延纹波最大值为20 ps。为减少写入光纤光栅的偏振模色散,研制了新的低偏振模色散光纤光栅补偿写入法。采用补偿写入法前的平均微分群时延为9.1406 ps;采用补偿写入法后的平均微分群时延为0.1521 ps。并利用低偏振模色散光纤光栅对40 Gb/s光时分复用系统在普通G.652光纤传输122 km的色散进行了补偿实验,功率代价为1.5 dB。
Abstract
Wide-bandwidth chirped fiber Bragg grating (FBG) has been fabricated using precisely scanning phase-mask technique. Two ends of the mask by ten percent length are coated, whose transmissive characteristics approximate fourth order Gaussian function. The maximum delay ripple of the chirped grating written by such a phase mask is about 20 ps.In order to decrease polarization mode dispersion (PMD) of chirped fiber Bragg grating, a novel method, which is called polarization mode dispersion-compensation written technique, has been developed. Differential group delay of chirped fiber Bragg grating by the former written technique is 9.1406 ps, but with the newly developed method it has been greatly reduced to 0.1521 ps. Such low polarization mode dispersion chirped fiber Bragg gratings were then used to compensate the dispersion of 40 Gb/s optical time division multiplexing transmission over 122 km of G.652 fiber
宁提纲, 简伟, 裴丽, 谭中伟, 刘艳, 简水生. 40Gb/s 光时分复用传输光纤光栅补偿色散研究[J]. 光学学报, 2004, 24(8): 1091. 宁提纲, 简伟, 裴丽, 谭中伟, 刘艳, 简水生. Study on Dispersion Compensation of 40 Gb/s Optical Time Division Multiplexing Transmission Over G.652 Fiber[J]. Acta Optica Sinica, 2004, 24(8): 1091.