title: NLFM waveform generation using tunable integrated optical ring resonators: simulation and proof of concept experiment.
abstract: The NLFM waveform resulting from a tunable integrated optical ring resonator is simulated. The metrics of interest are the first sidelobe levels and FWHM times of the autocorrelation, as these directly relate to the long-range performance and fine range resolution of a LADAR system, and should ideally be as small as possible. Through simulation, the maximum sidelobe level of the autocorrelation of an NLFM waveform generated by a series of tunable integrated optical ring resonators is shown to be -20 to -30 dB or lower. A proof of concept experiment employing an off-the-shelf thermally tunable silicon-nitride optical ring resonator is shown to generate NLFM chirped waveforms with a bandwidth of 28 kHz.
authors.affiliation: Texas A and M University, 3128 TAMU, College Station, 77843 Texas, USA. dba25@tamu.edu
authors.forename: D B
authors.initials: DB
authors.lastname: Adams
authors.forename: W T
authors.initials: WT
authors.lastname: Snider
authors.forename: C K
authors.initials: CK
authors.lastname: Madsen