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, vol. 45 (issue 36), pp. 9176-9181

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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},
	doi = {10.1364/ao.45.009176},
	year = {2006}
}