title: Broadband tunable optical delay based on real-time Fourier transformation and ramp-type phase modulation.
abstract: A new tunable optical delay scheme based on real-time Fourier transformation and ramp-type phase modulation is proposed and experimentally demonstrated. A linearly chirped fiber Bragg grating is adopted to implement the real-time Fourier transformation, and tunable delay is realized by changing the ramp-type modulating signal's period. Experimental results agree well with the theory. The signal distorts little after the delay, and a 18 ps delay is achieved for a 2-ps-wide optical pulse.
authors.affiliation: National Laboratory for Information Science and Technology, Department of Electronic Engineering,Tsinghua University, Beijing 100084, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Xin
authors.forename: Feifei
authors.initials: F
authors.lastname: Yin
authors.forename: Cheng
authors.initials: C
authors.lastname: Lei
authors.forename: Minghua
authors.initials: M
authors.lastname: Chen
authors.forename: Hongwei
authors.initials: H
authors.lastname: Chen
authors.forename: Chao
authors.initials: C
authors.lastname: Tang
authors.forename: Shizhong
authors.initials: S
authors.lastname: Xie