In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics
Translating interferometric applications into practical field use with the required flexible precision and measurement range, is a recognized challenge. We report an in-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers (EFPIs) with the Vernier...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/162764 |
| _version_ | 1824455468864503808 |
|---|---|
| author | Wang, Shun Yang, Yaowen Wu, Lei Mohanty, Lipi Jin, Rui-Bo Zhang, Liang Lu, Peixiang |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Wang, Shun Yang, Yaowen Wu, Lei Mohanty, Lipi Jin, Rui-Bo Zhang, Liang Lu, Peixiang |
| author_sort | Wang, Shun |
| collection | NTU |
| description | Translating interferometric applications into practical field use with the required flexible precision and measurement range, is a recognized challenge. We report an in-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers (EFPIs) with the Vernier effect and its harmonics. By accommodating the EFPI structure with an adjustable and a fixed cavity length, the EFPIs are utilized as a referencing fiber piezometer (RFP), and a sensing fiber piezometer (SFP), respectively. The Vernier effect with amplified sensitivity is formed by connecting the RFP and SFP in parallel via a 3 dB optical coupler. By simply tuning the cavity length of the RFP, the magnification factor M of the Vernier effect is in-situ continuously adjustable. Using the two prototypes SFP1 and SFP2, water level measurement is performed in the fundamental Vernier effect (FVE) mode and the harmonic Vernier effect (HVE) mode. Experimental results demonstrate that in the FVE mode, the sensitivity can be predictably tuned from -0.15 nm/cm to -7.02 nm/cm with M=1∼48 for SFP1, and -0.31 nm/cm to -7.22 nm/cm with M=1∼23 for SFP2. In the HVE mode, the sensitivity can be further enhanced as high as -9.08 nm/cm, while the sensing performance fluctuates during the adjusting process. Benefiting from the merits of in-situ adjustable sensitivity and measurement range, simplicity of composition, robustness, and remote sensing capability, the proposed scheme can be applied to various practical applications. |
| first_indexed | 2025-02-19T03:38:42Z |
| format | Journal Article |
| id | ntu-10356/162764 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:38:42Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1627642022-11-08T06:11:35Z In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics Wang, Shun Yang, Yaowen Wu, Lei Mohanty, Lipi Jin, Rui-Bo Zhang, Liang Lu, Peixiang School of Civil and Environmental Engineering Engineering::Civil engineering Fabry-Perot Interferometers Optical Coupler Translating interferometric applications into practical field use with the required flexible precision and measurement range, is a recognized challenge. We report an in-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers (EFPIs) with the Vernier effect and its harmonics. By accommodating the EFPI structure with an adjustable and a fixed cavity length, the EFPIs are utilized as a referencing fiber piezometer (RFP), and a sensing fiber piezometer (SFP), respectively. The Vernier effect with amplified sensitivity is formed by connecting the RFP and SFP in parallel via a 3 dB optical coupler. By simply tuning the cavity length of the RFP, the magnification factor M of the Vernier effect is in-situ continuously adjustable. Using the two prototypes SFP1 and SFP2, water level measurement is performed in the fundamental Vernier effect (FVE) mode and the harmonic Vernier effect (HVE) mode. Experimental results demonstrate that in the FVE mode, the sensitivity can be predictably tuned from -0.15 nm/cm to -7.02 nm/cm with M=1∼48 for SFP1, and -0.31 nm/cm to -7.22 nm/cm with M=1∼23 for SFP2. In the HVE mode, the sensitivity can be further enhanced as high as -9.08 nm/cm, while the sensing performance fluctuates during the adjusting process. Benefiting from the merits of in-situ adjustable sensitivity and measurement range, simplicity of composition, robustness, and remote sensing capability, the proposed scheme can be applied to various practical applications. Published version National Natural Science Foundation of China (12104350); Science and Engineering Research Council (1992200001); Taishan Scholar Project of Shandong Province (tsqn201909067). 2022-11-08T06:11:35Z 2022-11-08T06:11:35Z 2021 Journal Article Wang, S., Yang, Y., Wu, L., Mohanty, L., Jin, R., Zhang, L. & Lu, P. (2021). In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics. Optics Express, 29(26), 42800-42812. https://dx.doi.org/10.1364/OE.445192 1094-4087 https://hdl.handle.net/10356/162764 10.1364/OE.445192 2-s2.0-85120853988 26 29 42800 42812 en Optics Express © 2021 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement. application/pdf |
| spellingShingle | Engineering::Civil engineering Fabry-Perot Interferometers Optical Coupler Wang, Shun Yang, Yaowen Wu, Lei Mohanty, Lipi Jin, Rui-Bo Zhang, Liang Lu, Peixiang In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title | In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title_full | In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title_fullStr | In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title_full_unstemmed | In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title_short | In-situ adjustable fiber-optic piezometer based on parallelly structured external Fabry-Perot interferometers with Vernier effect and its harmonics |
| title_sort | in situ adjustable fiber optic piezometer based on parallelly structured external fabry perot interferometers with vernier effect and its harmonics |
| topic | Engineering::Civil engineering Fabry-Perot Interferometers Optical Coupler |
| url | https://hdl.handle.net/10356/162764 |
| work_keys_str_mv | AT wangshun insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT yangyaowen insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT wulei insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT mohantylipi insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT jinruibo insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT zhangliang insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics AT lupeixiang insituadjustablefiberopticpiezometerbasedonparallellystructuredexternalfabryperotinterferometerswithverniereffectanditsharmonics |