[1] M Cho and D Shin, Chinese Optics Letters 13, 051101 (2015).

[2] T Ryu, B Lee and S Lee, Applied Optics 54, 4147 (2015).

[3] K Kwon, J Jeong, M Erdenebat, Y Piao, K Yoo and N Kim, Biomedical Optics Express 6, 736 (2015).

[4] K Wakunami, M Yamaguchi and B Javidi, Optics Letters 37, 5103 (2012).

[5] W Xie, Y Wang, H Deng and Q Wang, Chinese Optics Letters 12, 011101 (2014).

[6] á Tolosa, R Martinez-Cuenca, H Navarro, G Saavedra, M Martínez-Corral, B Javidi and A Pons, Optics Express 22, 31853 (2014).

[7] F Wu, Q Wang, C Luo, D Li and H Deng, Applied Optics 53, 2037 (2014).

[8] L Zhang, Y Yang, X Zhao, Z Fang and X Yuan, Optics and Precision Engineering 21, 1 (2013).

[9] M Guo, Y Si, Y Lyu, S Wang and F Jin, Applied Optics 54, 876 (2015).

[10] Wang X, Bu Q and Zhang D, Optics Letters 34, 3382 (2009).

[11] G Park, J Jung, K Hong, Y Kim, Y Kim, S Min and B Lee B, Optics Express 17, 17895 (2009).

[12] W Xie, Q Wang, Y Wang and H Deng, Optik - International Journal for Light and Electron Optics 125, 6087 (2014).

[13] J Jang, D Shin, B Lee and E Kim, Optics Letters 39, 2853 (2014).

[14] Y Wang, Q Wang, D Li, H Deng and C Luo, Chinese Optics Letters 11, 61101 (2013).

[15] J Jang and B Javidi, Optics Express 12, 1077 (2004).

[16] L Zhang, L Zhou, X Zhao and X Jiao, Journal of Optoelectronics ·Laser 26, 387 (2015). (in Chinese)

[17] L Zhang, X Jiao, X Sun, Y Xie and S Liu, Optoelectronics Letters 11, 166 (2015).

[18] X Jiao, L Zhang, X Sun, L Zhou and X Zhao, Optoelectronics Letters 11, 268 (2015).