title: Optical bending sensor using distributed feedback solid state dye lasers on optical fiber.
abstract: Novel type of optical fiber sensor was proposed and demonstrated. The print-like fabrication technique fabricates multiple distributed feedback solid state dye lasers on a polymeric optical fiber (POF) with tapered coupling. This multi-active-sidecore structure was easily fabricated and provides multiple functions. Mounting the lasers on the same point of a multimode POF demonstrated a bending radius sensitivity of 20 m without any supports. Two axis directional sensing without cross talk was also confirmed. A more complicated mounting formation can demonstrate a twisted POF. The temperature property of the sensor was also studied, and elimination of the temperature influence was experimentally attained.
authors: Department of Electronics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors: Hiroyuki
authors: H
authors: Kubota
authors: Soichiro
authors: S
authors: Oomi
authors: Hiroaki
authors: H
authors: Yoshioka
authors: Hirofumi
authors: H
authors: Watanabe
authors: Yuji
authors: Y
authors: Oki