Document - Spectral characterization of integrated acousto-optic tunable filters by means of laser frequency modulation spectroscopy

2006

Journal article Open Access

Spectral characterization of integrated acousto-optic tunable filters by means of laser frequency modulation spectroscopy

Di Maio A., Salza M., Gagliardi G., Ferraro P., De Natale P.

Materials Science (miscellaneous) spectroscopy Industrial and Manufacturing Engineering Business and International Management

The spectral characteristics of an integrated acousto-optic tunable filter (AOTF) as well as its responsivity to the rf driving signal and sensitivity to temperature changes are experimentally investigated and quantified using a diode-laser-based interrogation system. A spectroscopic technique, exploiting the rf frequency modulation of the laser beam and the phase-sensitive detection of the AOTF transmission, has been used for this purpose. That allows for the generation of a dispersivelike signal, which serves as a reference for tracking any wavelength change of the filters peak with high resolution. The possibility of using the integrated AOTF as a spectrum analyzer with this interrogation scheme for fiber Bragg grating (FBG) strain sensing is also discussed.

Source: Applied optics 45 (2006): 9176–9181. doi:10.1364/AO.45.009176

Publisher: Optical Society of America,, Easton, Pa. , Stati Uniti d'America

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@article{oai:it.cnr:prodotti:57853,
	title = {Spectral characterization of integrated acousto-optic tunable filters by means of laser frequency modulation spectroscopy},
	author = {Di Maio A. and Salza M. and Gagliardi G. and Ferraro P. and De Natale P.},
	publisher = {Optical Society of America,, Easton, Pa. , Stati Uniti d'America},
	doi = {10.1364/ao.45.009176},
	journal = {Applied optics},
	volume = {45},
	pages = {9176–9181},
	year = {2006}
}