Xiao-wei Dong,Wen-kai Liu.All-optical buffer and shaper based on complex-modulated long-period-grating coupler and self-closed fiber loop[J].Optoelectronics Letters,2012,8(6):418-421 All-optical buffer and shaper based on complex-modulated long-period-grating coupler and self-closed fiber loop Author Name Affiliation E-mail Xiao-wei Dong  College of Information Engineering, North China University of Technology, Beijing, 100144, China  way7803@163.com  Wen-kai Liu  College of Information Engineering, North China University of Technology, Beijing, 100144, China    Abstract:       We propose a novel all-optical buffer and shaper based on the adjustable power transferring characteristics of the complex-modulated long-period-grating coupler (CM-LPGC) and the multiple circulations of the self-closed fiber loop. By turning on the external optical pumps, the signals can be stored by utilizing the nonreciprocal power transferring of the CM-LPGC. When the buffer time is satisfied, the signals can be extracted discretionarily by turning off the external optical pumps. In addition, by controlling the spectral bandwidth of the CM-LPGC, the temporal rectangular pulse can be obtained by reshaping the Gaussian input signal. Hits: 5543 Download times: 1789 View Full Text    Download reader