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针对光纤模分复用传输系统中模式耦合串扰问题, 设计并制备了一种新型少模光纤, 其较高的模式差分群延时保证各模式信道独立传输.在此基础上, 提出一种级联多输入多输出(MIMO)延时均衡算法, 进一步减少源于模式复用器和解复用器的模式串扰, 提高基于少模光纤的模分复用传输系统的传输距离和传输容量.与传统MIMO均衡算法相比, 级联MIMO延时均衡算法在没有显著增加计算复杂度的条件下, 能够应用于模式差分群延时很大的模分复用传输系统.对单信道传输速率为 40 Gbps的四相相移键控两模复用传输系统进行仿真, 经40 km少模光纤传输后, 采用级联MIMO均衡算法较普通MIMO均衡算法有1.7 dB的质量因子的提升. 仿真结果证明, 使用少模光纤和级联MIMO延时均衡算法能够有效地消除模分复用信号间的串扰, 有望在下一代大容量光纤传输系统中获得 推广应用.
[1] Tan Z W, Ning T G, Liu Y, Tong Z, Jian S S 2006 Chin. Phys. 15 1819
[2] Wang J, Wang Z L 2004 Chin. Phys. 13 877
[3] Zhang J Z, Wang A B, Wang Y C 2009 Acta Phys. Sin. 58 3793 (in Chinese) [张建忠, 王安帮, 王云才 2009 物理学报 58 3793]
[4] Chan F Y M, Lau A P T, Tam H Y 2012 Opt. Express 20 4548
[5] Al Amin A, Li A, Chen S, Chen X, Gao G, Shieh W 2011 Opt. Express 19 16672
[6] Lin Z, Zheng S W, Ren G B, Jian S S 2012 Acta Phys. Sin. 62 064214 (in Chinese) [林桢, 郑斯文, 任国斌, 简水生 2012 物理学报 62 064214]
[7] Love J D, Riesen N 2012 Opt. Lett. 37 3990
[8] Ryf R, Randel S, Gnauck A H, Bolle C, Sierra A, Mumtaz S, Esmaeelpour M, Burrows E C, Essiambre R J, Winzer P J, Peckham D W, McCurdy A H, Lingle R 2012 J. Lightwave Technol. 30 521
[9] Okamoto A, Soma D, Wakayama Y, Tomita A, Sato K, Grabar A A 2010 OptoElectronics and Communications Conference Saporo, 4 March, 2010 p302
[10] Hanzawa N, Saitoh K N, Sakamoto T, Matsui T, Tomita S, Koshiba M 2012 Optical Fiber Communication Conference Los Angeles, California, March 4, 2012 pOW1D.4
[11] Chen H S, van den Boom H P A, Koonen A M J 2011 Photonics Technol. Lett. 23 1283
[12] Olshansky R 1975 Appl. Opt. 14 935
[13] Salsi M, Koebele C, Sperti D, Tran P, Mardoyan H, Brindel P, Bigo S, Boutin A, Verluise F, Sillard P, Bigot-Astruc M, Provost L, Charlet G 2012 J. Lightwave Technol. 30 618
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[1] Tan Z W, Ning T G, Liu Y, Tong Z, Jian S S 2006 Chin. Phys. 15 1819
[2] Wang J, Wang Z L 2004 Chin. Phys. 13 877
[3] Zhang J Z, Wang A B, Wang Y C 2009 Acta Phys. Sin. 58 3793 (in Chinese) [张建忠, 王安帮, 王云才 2009 物理学报 58 3793]
[4] Chan F Y M, Lau A P T, Tam H Y 2012 Opt. Express 20 4548
[5] Al Amin A, Li A, Chen S, Chen X, Gao G, Shieh W 2011 Opt. Express 19 16672
[6] Lin Z, Zheng S W, Ren G B, Jian S S 2012 Acta Phys. Sin. 62 064214 (in Chinese) [林桢, 郑斯文, 任国斌, 简水生 2012 物理学报 62 064214]
[7] Love J D, Riesen N 2012 Opt. Lett. 37 3990
[8] Ryf R, Randel S, Gnauck A H, Bolle C, Sierra A, Mumtaz S, Esmaeelpour M, Burrows E C, Essiambre R J, Winzer P J, Peckham D W, McCurdy A H, Lingle R 2012 J. Lightwave Technol. 30 521
[9] Okamoto A, Soma D, Wakayama Y, Tomita A, Sato K, Grabar A A 2010 OptoElectronics and Communications Conference Saporo, 4 March, 2010 p302
[10] Hanzawa N, Saitoh K N, Sakamoto T, Matsui T, Tomita S, Koshiba M 2012 Optical Fiber Communication Conference Los Angeles, California, March 4, 2012 pOW1D.4
[11] Chen H S, van den Boom H P A, Koonen A M J 2011 Photonics Technol. Lett. 23 1283
[12] Olshansky R 1975 Appl. Opt. 14 935
[13] Salsi M, Koebele C, Sperti D, Tran P, Mardoyan H, Brindel P, Bigo S, Boutin A, Verluise F, Sillard P, Bigot-Astruc M, Provost L, Charlet G 2012 J. Lightwave Technol. 30 618
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