Strain and temperature sensing based on multimode interference in partially chlorinated polymer optical fibers
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We develop strain and temperature sensors based on multimode interference in a partially chlorinated graded-index polymer optical fiber (PCGI-POF) and experimentally investigate their sensing performance at room temperature using incident light of ∼1300 nm wavelength. The length of the PCGI-POF was 0.7 m. The measured strain and temperature sensitivities were −4.47 pm/µε and +9.66 nm/°C/m, respectively, the absolute values of which were 0.29 times and over 350 times the values in a silica GI-MMF. This result suggests that the modal interference in PCGI-POFs is potentially applicable to high-sensitivity temperature measurement with low strain sensitivity.
- IEICE Electronics Express
IEICE Electronics Express 12(2), 20141173-20141173, 2015
The Institute of Electronics, Information and Communication Engineers