A femtosecond laser trimmed fiber taper as a Mach-Zehnder interferometer in a standard single-mode optical fiber is demonstrated to achieve simultaneous measurement of axial strain and temperature. The experimental results indicate axial strain sensitivities of -1.0 and -1.2 pm/με (blueshift) and temperature sensitivities of 81.3 and 98.8 pm/°C (redshift) at two interference orders of m1(95) and m2(90), respectively.
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Men et al. (2011) studied this question.
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