Title :
Experimental Method to Find the Optimum Excitation Waveform to Quench Mechanical Resonances of Fabry–Pérot Tunable Filters Used in Swept Sources
Author :
Trifanov, I. ; Bradu, A. ; Neagu, L. ; Guerreiro, P. ; Ribeiro, A. B Lobo ; Podoleanu, A. Gh
Author_Institution :
Multiwave Photonics S.A., Moreira da Maia, Portugal
fDate :
6/15/2011 12:00:00 AM
Abstract :
We report experimental evidence of improving the nonlinearity of conventional wavelength swept laser sources based on a fiber Fabry-Perot tunable filter as a wavelength-selective element. Our solution is based on applying a nonsinusoidal, synthesized waveform to the tunable filter that can be identified experimentally. A significant improvement in the optical coherence tomography image quality has been obtained without any software recalibration method.
Keywords :
Mach-Zehnder interferometers; biomedical optical imaging; laser applications in medicine; optical fibres; optical filters; optical tomography; fiber Fabry-Pérot tunable filters; image quality; mechanical resonance quenching; nonsinusoidal synthesized waveform; optical coherence tomography; optimum excitation waveform; software recalibration method; swept sources; wavelength swept laser sources; wavelength-selective element; Nonlinear optics; Optical distortion; Optical fiber filters; Optical imaging; Optical interferometry; Resonant frequency; Fabry–Pérot tunable filter (FP-TF); optical coherence tomography (OCT); swept source (SS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2140101
