title: Frequency-doubled triangular-shaped waveform generation based on spectrum manipulation.
abstract: In this approach, spectrum manipulation is employed in triangular-shaped waveform generation. By aligning the power of five primary modulation sidebands, optical intensity with expression corresponding to the first two-term Fourier expansion of triangular-shaped waveform can be obtained. It is found that the modulation index in this Letter is no longer a fixed one, but should be within a proper range (2-3). Triangular-shaped waveform signals can be generated by using a single-drive Mach-Zehnder modulator, a standard optical interleaver, and a grating. The principle is illustrated by theory, simulation, and experiment. A 20 GHz triangular-shaped waveform signal is experimentally generated by using a 10 GHz sinusoid signal, which agrees well with the theoretical prediction and shows great potential in generating a high-quality intensity profile.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.forename: Weiwei
authors.initials: W
authors.lastname: Xu
authors.forename: Tigang
authors.initials: T
authors.lastname: Ning
authors.forename: Li
authors.initials: L
authors.lastname: Pei
authors.forename: Jin
authors.initials: J
authors.lastname: Yuan
authors.forename: Yueqin
authors.initials: Y
authors.lastname: Li