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

Volume

23

Issue

12

fYear

2011

fDate

6/15/2011 12:00:00 AM

Firstpage

825

Lastpage

827

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);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2140101

Filename

5744100