[1] L. Yi, W. Hu, and H. He, “Reconfigurable multi-logic gates based on SOA nonlinear polarization rotation effect,” in Optoelectronics and Communications Conference, Sapporo, pp. 194–195, 2010.

[2] B. Dagens, A. Labrousse, R. Brenot, B. Lavigne, and M. Renaud, “SOA-based devices for all-optical signal processing,” in Optical Fiber Communications Conference, Atlanta, vol. 2, pp. 582–583, 2003.

[3] J. Wang, G. Meloni, G. Berrettini, L. Poti, and A. Bogoni, “All-optical clocked flip-flops and binary counting operation using SOA-based SR latch and logic gates,” IEEE Journal of Selected Topics in Quantum Electronics, 2010, 16(5): 1486–1494.

[4] H. J. S. Dorren, D. Lenstra, Y. Liu, M. T. Hill, and G. D. Khone, “Nonlinear polarization rotation in semiconductor optical amplifiers: theory and application to all-optical flip-flop memories,” IEEE Journal of Quantum Electronics, 2003, 39(1): 141–148.

[5] P. Bakopoulos, K. Vyrsokinos, D. Fitsios, T. Alexoudi, D. Apostolopoulos, H. Avramopoulos, et al., “All-optical t-flip-flop using a single SOA-MZIbased latching element,” IEEE Photonics Technology Letters, 2012, 24(9): 748–750.

[6] T. Chattopadhyay, C. Reis, P. André, and A. Teixeira, “Theoretical analysis of all-optical clocked D flip-flop using a single SOA assisted symmetric MZI,” Optics Communications, 2012, 285(9): 2266–2275.

[7] H. Uenohara, S. Shimizu, T. Kato, Y. Tatara, K. Goto, N. Fukui, et al., “All-optical flip-flop circuit based on SOA-MZI,” in Asia Communications and Photonics Conference and Exhibition, Shanghai, pp. 691–692, 2010.

[8] D. K. Gayen, T. Chattopadhyay, and K. E. Zoiros, “All-optical D flip-flop using single quantum-dot semiconductor optical amplifier assisted Mach-Zehnder interferometer,” Journal of Computational Electronics, 2015, 14(1): 129–138.

[9] J. Sohrabtash, A. Zarifkar, and M. H. Sheikhi, “A high performance all-optical set-reset flip-flop based on SOA-MZI,” Optoelectronics Letters, 2014, 10(6): 430–433.

[10] Y. Liu, M. T. Hill, H. D. Waardt, G. D. Khone, D. Lenstra, and H. J. S. Dorren, “All-optical flip-flop memory based on two coupled polarization switches,” Electronics Letters, 2002, 38(16): 904–906.