We demonstrate power-based refractive index (RI) sensing using a polymer optical fiber (POF) crushed with a slotted screwdriver. This structure can be easily fabricated by simply pressing the end of a slotted screwdriver against part of the POF. Neither external heat sources, chemicals, nor ultrasonic transducers, which have been conventionally used, are necessary. The transmitted power has a linear RI dependence in the RI range from similar to 1.32 to similar to 1.43 (coefficient: 173 dB/RIU (RI unit)). The temperature dependence of the transmitted power is experimentally shown to be negligible, which indicates the potential of this structure as a temperature-independent RI sensor.
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Univ Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia
Univ Malaya, Photon Res Ctr, Kuala Lumpur 50603, MalaysiaUniv Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia
Jasim, A. A.
Hayashi, N.
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Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, JapanUniv Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia
Hayashi, N.
Harun, S. W.
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Univ Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia
Univ Malaya, Photon Res Ctr, Kuala Lumpur 50603, MalaysiaUniv Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia
Harun, S. W.
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Ahmad, H.
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Penny, R.
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Mizuno, Y.
Nakamura, K.
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Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, JapanUniv Malaya, Dept Elect Engn, Fac Engn, Kuala Lumpur 50603, Malaysia