Contrast sensitive fiber optic Michelson interferometer as elongation sensor

• Autorzy: Szustakowski M. , Pałka N.
• Języki publikacji: EN

Abstrakty

EN

Theoretical description of a contrast phenomenon in an unbalanced fiber optic Michelson’s interferometer with a multimode laser is shown. Required characteristic features of the contrast function for an elongation sensor are determined. Optimal spectrum for the dislocation sensor is calculated theoretically. A laser which parameters fulfilled the requirements was found. The elongation sensor based on contrast oscillations in an unbalanced fiber optic Michelson interferometer with a 3x3 coupler is described. Direct contrast-sensitive elongation measurement range limited to 200-µm long slope is expanded up to 5 mm by means of contrast oscillations linearization scheme. Elongation modulator in a reference arm of the interferometer is used. Experimental setup, signal processing scheme and software were worked out. For 1-m long sensor, the 5-mm measuring range with 28-µm uncertainty was obtained.

Słowa kluczowe

EN

fiber optic; Michelson interferometer; contrast function; elongation sensor

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2005
• Tom: Vol. 13, No. 1
• Strony: 19--26
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Szustakowski M.

• Institute of Optoelectronics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland

autor

Pałka N.

• Institute of Optoelectronics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland

Bibliografia

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