The 83rd JSAP Autumn Meeting 2022

Presentation information

Print

Oral presentation

3 Optics and Photonics » 3.13 Optical control devices and optical fibers (formerly 3.14)

[21p-A406-1~9] 3.13 Optical control devices and optical fibers (formerly 3.14)

Wed. Sep 21, 2022 3:00 PM - 5:30 PM A406 (A406)

Atsushi Wada(National Defence Academy), Yosuke Mizuno(Yokohama National University), Keiji Kuroda(Kitasato University)

3:00 PM - 3:15 PM

[21p-A406-1] Automatic measurement of time-division multiplexed DFB sensor based on heterodyne

〇Keiji Kuroda1 (1.Kitasato Univ.)

Keywords:Fiber Bragg grating sensor, Heterodyne detection, DFB laser

In the 2022 spring meeting, I reported TDM (Time-division multiplexed) -FBG sensing using a heterodyne detection technique. In the system, however, there were two problems. 1. Errors induced by fluctuations of beat signals were added to reflection spectra. 2. The measurement times were long, because the frequency tuning was manually done by changing the laser temperature. In this presentation, I report automatic measurements of TDM-DFB sensor based on LabVIEW program to overcome the above problems.