Tapered fiber Mach-Zehnder interferometer for simultaneous measurement of refractive index and temperature

An approach to achieve simultaneous measurement of refractive index and temperature is proposed by using a Mach-Zehnder interferometer realized on tapered single-mode optical fiber. The attenuation peak wavelength of the interference with specific order in the transmission spectrum shifts with chang...

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Bibliographic Details
Published inApplied physics letters Vol. 94; no. 13; pp. 131110 - 131110-3
Main Authors Lu, Ping, Men, Liqiu, Sooley, Kevin, Chen, Qiying
Format Journal Article
LanguageEnglish
Published American Institute of Physics 30.03.2009
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ISSN0003-6951
1077-3118
DOI10.1063/1.3115029

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Summary:An approach to achieve simultaneous measurement of refractive index and temperature is proposed by using a Mach-Zehnder interferometer realized on tapered single-mode optical fiber. The attenuation peak wavelength of the interference with specific order in the transmission spectrum shifts with changes in the environmental refractive index and temperature. By utilizing S -band and C / L -band light sources, simultaneous discrimination of refractive index and temperature with the tapered fiber Mach-Zehnder interferometer is demonstrated with the corresponding sensitivities of −23.188 nm/RIU (refractive index unit) and 0.071   nm / ° C , and −26.087 nm/RIU (blueshift) and 0.077   nm / ° C (redshift) for the interference orders of 169 and 144, respectively.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3115029