[1] Davide Visani, Giovanni Tartarini and Luigi Tarlazzi, IEEE Microwave and Wireless Components Letters 19, 831 (2009).
[2] Shi Tuo, Xiong Bing, Sun Changzheng and Luo Yi, Journal of Optoelectronics·Laser 24, 56 (2013). (in Chinese)
[3] Yi Xiang, Yue Peng, Liu Zengji and Chen Geng, Journal of Optoelectronics·Laser 23, 1309 (2012). (in Chinese)
[4] Tang P. K., Ong L. C. and Luo B., 2004 IEEE MTT-S International Microwave Symposium Digest 3, 2051 (2004).
[5] Liang Zhang, Chenhui Ye and Xiaofeng Hu, IEEE Photonics Technology Letters 24, 1621 (2012).
[6] Zhensheng Jia, Jianjun Yu and Arshad Chowdhury, IEEE Photonics Technology Letters 19, 1691 (2007).
[7] Christos P. Tsekrekos, Toshiake Kuri and Ken-ichi Kitayama, Journal of Lightwave Technology 28, 2783 (2010).
[8] Yu-Min Lin, Po-Lung Tien and Maria C. Yuang, IEEE Photonics Technology Letters 22, 419 (2010).
[9] P. Shilong and Y. Jianping, Journal of Lightwave Technology 29, 3025 (2011).
[10] P. Tien-Thang, IEEE Photonics Journal 3, 13 (2011).
[11] J. J. V. Olmos, IEEE Transaction on Microwave Theory and Technology 58, 3001 (2010).
[12] Y. T. Hsueh, IEEE Photonics Technology Letters 21, 1338 (2009).
[13] J. Zhensheng, IEEE Photonics Technology Letters 19, 1691 (2007).
[14] Tong Shao, Flora Paresys and Yannis Le Gurnnec, Journal of Lightwave Technology 30, 2824 (2012).