Abstract-Programmable wavelength-tunable optical temporal differentiator based on linearly chirped fiber Bragg grating and digital thermal controller

Ming Tang, Hailiang Zhang, Yiwei Xie, Fu Songnian, Dengming Liu, and Ping Shum    12/18/2013; accepted 03/04/2014; posted 03/04/2014; Doc. ID 203357

http://www.opticsinfobase.org/ol/upcoming_pdf.cfm?id=203357

Abstract: We proposed and experimentally demonstrated an all-fiber structured wavelength-tunable second-order optical temporal differentiator based on a linearly chirped fiber Bragg grating and a digital-controlled thermal array.The central frequency of the differentiation can be reconfigured from192.141 THz to 192.616 THz by a programmable circuit. In the experiment, a second order differentiator with 3-dB bandwidth of 0.086 THz is achieved with a root-mean-square error of 4.89 %