Abstract
A phase-coded Brillouin optical correlation domain analysis (BOCDA) based on amplitude modulation was proposed. Unlike the conventional phase-coded BOCDA which suffers from non-rectangular phase transitions, the proposed phase coding based on amplitude modulation can realize perfect phase switches between 0 and π with zero-width edges. Numerical simulations and experimental results prove that it can effectively suppress the Brillouin amplification in the off-peak positions. In experiment, a 2-mm spatial resolution sensing is realized using only a 20-GHz bandwidth amplitude modulator.
| Original language | English |
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| Title of host publication | Optical Fiber Sensors, OFS 2020 |
| Publisher | Optica Publishing Group (formerly OSA) |
| ISBN (Electronic) | 9781557523075 |
| State | Published - 2020 |
| Externally published | Yes |
| Event | 27th International Conference on Optical Fiber Sensors, OFS 2020 - Washington, United States Duration: 8 Jun 2020 → 12 Jun 2020 |
Publication series
| Name | Optics InfoBase Conference Papers |
|---|---|
| ISSN (Electronic) | 2162-2701 |
Conference
| Conference | 27th International Conference on Optical Fiber Sensors, OFS 2020 |
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| Country/Territory | United States |
| City | Washington |
| Period | 8/06/20 → 12/06/20 |
Bibliographical note
Publisher Copyright:© 2021 The Author(s).
Funding
The work was supported in part by the National Natural Science Foundation of China under Grant 61975045, 61605034 and 61575052; in part by the National Key Scientific Instrument and Equipment Development Project of China under Grant 2017YFF0108700; in part by the China Postdoctoral Science Foundation under Grant 2016M591531.
| Funders | Funder number |
|---|---|
| National Natural Science Foundation of China | 61975045, 61605034, 61575052 |
| China Postdoctoral Science Foundation | 2016M591531 |
| National Key Scientific Instrument and Equipment Development Projects of China | 2017YFF0108700 |