[1] Q. Yu, Z. Pan, L.-S. Yan, and A. E. Willner, J. Lightwave Technol. 20, 2267 (2002).

[2] A. E. Willner, in Proceedings of LEOS'2002 Tul1, 201 (2002).

[3] T. Sugihara, K. Shimomura, K. Shimizu, Y. Kobayashi, K. Matsuoka, M. Hashimoto, T. Hashimoto, T. Hirai, S. Matsumoto, T. Ohira, M. Takabayashi, K. Yoshiara, and T. Mizuochi, in Proceedings of OFC'2002 ThAA2, 577 (2002).

[4] Y. Yokoyama, T. Ito, and K. Fukuchi, in Proceedings of ECOC'2003 Tu 4.2.1 (2003).

[5] T. E. Dimmick, G. Rossi, and D. J. Blumenthal, IEEE Photon. Technol. Lett. 12, 900 (2000).

[6] K. J. Park, C. J. Youn, J. H. Lee, and Y. C. Chung, in Proceedings of OFC'2002 ThGG88, 735 (2002).

[7] M. N. Petersen, Z. Pan, S. Lee, S. A. Havstad, and A. E. Willner, IEEE Photon. Technol. Lett. 14, 570 (2002).

[8] Y. Takushima and K. Kikuchi, Electron. Lett. 37, 743 (2001).

[9] Z. Pan, Y. Xie, S. A. Havstad, Q. Yu, A. E. Wiklner, V. Grubsky, D. S. Starodubov, and J. Feinberg, Opt. Commun. 230, 145 (2004).

[10] T. Inui, T. Komukai, M. Nakazawa, K. Suzuki, K. R. Tamura, K. Uchiyama, and T. Morioka, IEEE Photon. Technol. Lett. 14, 549 (2002).

[11] S. Wielandy, M. Fishteyn, T. Her, D. Kudelko, and C. Zhang, in Proceedings of OFC'2003 TuD5, 166 (2003).

[12] P. S. Westbrook, B. J. Eggleton, T. Her, G. Raybon, and S. Hunsche, in Proceedings of OFC'2002 WU6, 335 (2002).

[13] P. S. Westbrook, B. J. Eggleton, G. Raybon, S. Hunsche, and T. Her, IEEE Photon. Technol. Lett. 14, 346 (2002).