Movatterモバイル変換

• Yosuke Mizuno

  Institute of Innovative Research, Tokyo Institute of Technology

• Heeyoung Lee

  Institute of Innovative Research, Tokyo Institute of Technology

• Shumpei Shimada

  Institute of Innovative Research, Tokyo Institute of Technology

• Yukihiro Matsumoto

  Department of Architecture and Civil Engineering, Toyohashi University of Technology

• Yosuke Tanaka

  Institute of Engineering, Tokyo University of Agriculture and Technology

• Hitoshi Nakamura

  Department of Civil and Environmental Engineering, Tokyo Metropolitan University

• Kentaro Nakamura

  Institute of Innovative Research, Tokyo Institute of Technology

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 ∼1.32 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.