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1. The effect of frequency modulation on the FSR of a Fabry-Perot cavity using an Optical Spectrum Analyser

Author

Reis João, V.Rodrigues António, Robalinho Paulo, Novais Susana, Maia João, Marques Paulo, Roma D., Salvans J., Canal M., Ramos J., Gualani V., Sisteré S., Martín V., Nofrarias M., Silva Susana, and Frazão Orlando

Subjects
Physics, QC1-999
Abstract

It is presented a study of the dependence between the free spectral range (FSR) and the cavity length in Fabry-Perot interferometers. Furthermore, the effect of frequency modulation on the FSR is studied when an optical spectrum analyser (OSA) is used as an interrogator. For low frequency range it is possible to observe this behaviour in the OSA and using an appropriate processing signal it is possible to use the white light interferometry technique.

Published
2022
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