| Presentation | 2022-08-25 EDF laser displacement sensor based on bending characteristics of cascaded-chirped long-period fiber grating Koken Fukushima, Makoto Okano, Atsushi Wada, Satoshi Tanaka, Fumihiko Ito, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have constructed an EDF laser in a sigma cavity configuration (EDFσL) using a double-pass cascaded-chirped long-period fiber grating (C-CLPG) for a displacement measurement. In this configuration, the double-pass C-CLPG consists of a C-CLPG and a Faraday rotator mirror (FRM), and works as a reflective sensor section with a comb-like spectrum and allows for flexible sensor configurations. In addition, it has a function to compensate for birefringence fluctuations during sensing operation by introducing the FRM. In the experiment, real-time displacement measurement by the EDFσL is demonstrated based on the bending characteristics of the C-CLPG. Further, it is confirmed that the proposed EDFσL shows a more stable oscillation due to the birefringence compensation effect than the previous single-pass C-CLPG-based EDF ring laser, enabling more precise measurements. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fiber optic sensor / Long-period fiber grating / Cascaded-chirped long-period fiber grating / Erbium-doped fiber laser / Faraday rotator mirror / Displacement |
| Paper # | OFT2022-9 |
| Date of Issue | 2022-08-18 (OFT) |
| Conference Information | |
| Committee | OCS / OFT / LSJ |
|---|---|
| Conference Date | 2022/8/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Takeshi Hoshida(Fujitsu) / Makoto Yamada(Osaka Metropolitan Univ.) |
| Vice Chair | |
| Secretary | (NTT) / (Sumitomo Electric Industries) / (Ryutsu Keizai Univ.) |
| Assistant | / Yukihiro Goto(NTT) / Naoyuki Ozawa(Fujikura) |
| Paper Information | |
| Registration To | Technical Committee on Optical Communication Systems / Technical Committee on Optical Fiber Technology / The Laser Society of Japan |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | EDF laser displacement sensor based on bending characteristics of cascaded-chirped long-period fiber grating |
| Sub Title (in English) | |
| Keyword(1) | Fiber optic sensor |
| Keyword(2) | Long-period fiber grating |
| Keyword(3) | Cascaded-chirped long-period fiber grating |
| Keyword(4) | Erbium-doped fiber laser |
| Keyword(5) | Faraday rotator mirror |
| Keyword(6) | Displacement |
| 1st Author's Name | Koken Fukushima |
| 1st Author's Affiliation | National Defense Academy(NDA) |
| 2nd Author's Name | Makoto Okano |
| 2nd Author's Affiliation | National Defense Academy(NDA) |
| 3rd Author's Name | Atsushi Wada |
| 3rd Author's Affiliation | National Defense Academy(NDA) |
| 4th Author's Name | Satoshi Tanaka |
| 4th Author's Affiliation | National Defense Academy(NDA) |
| 5th Author's Name | Fumihiko Ito |
| 5th Author's Affiliation | Shimane University(Shimane Univ.) |
| Date | 2022-08-25 |
| Paper # | OFT2022-9 |
| Volume (vol) | vol.122 |
| Number (no) | OFT-162 |
| Page | pp.pp.16-21(OFT), |
| #Pages | 6 |
| Date of Issue | 2022-08-18 (OFT) |