Fully Distributed Strain Sensor Based on a Dual-Loop Optoelectronic Oscillator
A high spatial resolution fully distributed linearly chirped fiber Bragg grating (LCFBG) sensing method based on a dual-loop optoelectronic oscillator (OEO) is proposed. Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based...
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| Veröffentlicht in: | IEEE photonics technology letters 2024-02, Vol.36 (3), p.191-194 |
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| creator | Gao, Lingge Wang, Yiping Shi, Jingzhan Liu, Qiang Lin, Dongdong |
| description | A high spatial resolution fully distributed linearly chirped fiber Bragg grating (LCFBG) sensing method based on a dual-loop optoelectronic oscillator (OEO) is proposed. Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based on the sensing principle of OEO and the wavelength-position one-to-one mapping mechanism in LCFBG. The interrogation method is simple and fast by processing the sensing information in the RF domain. With the help of the dual-loop OEO, the frequency fluctuation of the signal is only 1.8% of that of the single-loop OEO, which enhances the stability of the system and thus improves the measurement accuracy. To verify the feasibility of the proposed method, a non-uniform distributed strain sensing experiment was performed. The results show that a high spatial resolution of 0.29 mm and a sensing resolution of 0.6~\mu \varepsilon were achieved over a length of 53 mm. The system provides a feasible solution for structural health monitoring (SHM). |
| doi_str_mv | 10.1109/LPT.2023.3345530 |
| format | Article |
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Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based on the sensing principle of OEO and the wavelength-position one-to-one mapping mechanism in LCFBG. The interrogation method is simple and fast by processing the sensing information in the RF domain. With the help of the dual-loop OEO, the frequency fluctuation of the signal is only 1.8% of that of the single-loop OEO, which enhances the stability of the system and thus improves the measurement accuracy. To verify the feasibility of the proposed method, a non-uniform distributed strain sensing experiment was performed. The results show that a high spatial resolution of 0.29 mm and a sensing resolution of <inline-formula> <tex-math notation="LaTeX">0.6~\mu \varepsilon </tex-math></inline-formula> were achieved over a length of 53 mm. The system provides a feasible solution for structural health monitoring (SHM).</description><identifier>ISSN: 1041-1135</identifier><identifier>EISSN: 1941-0174</identifier><identifier>DOI: 10.1109/LPT.2023.3345530</identifier><identifier>CODEN: IPTLEL</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Bragg gratings ; distributed strain sensor ; Feasibility ; Interrogation ; Linearly chirped fiber Bragg grating ; Microwave filters ; Microwave oscillators ; microwave photonics ; Optical fibers ; Optical filters ; Optical reflection ; optoelectronic oscillator ; Optoelectronics ; Oscillators ; Reflection ; Spatial resolution ; Strain ; Structural health monitoring</subject><ispartof>IEEE photonics technology letters, 2024-02, Vol.36 (3), p.191-194</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based on the sensing principle of OEO and the wavelength-position one-to-one mapping mechanism in LCFBG. The interrogation method is simple and fast by processing the sensing information in the RF domain. With the help of the dual-loop OEO, the frequency fluctuation of the signal is only 1.8% of that of the single-loop OEO, which enhances the stability of the system and thus improves the measurement accuracy. To verify the feasibility of the proposed method, a non-uniform distributed strain sensing experiment was performed. The results show that a high spatial resolution of 0.29 mm and a sensing resolution of <inline-formula> <tex-math notation="LaTeX">0.6~\mu \varepsilon </tex-math></inline-formula> were achieved over a length of 53 mm. The system provides a feasible solution for structural health monitoring (SHM).</description><subject>Bragg gratings</subject><subject>distributed strain sensor</subject><subject>Feasibility</subject><subject>Interrogation</subject><subject>Linearly chirped fiber Bragg grating</subject><subject>Microwave filters</subject><subject>Microwave oscillators</subject><subject>microwave photonics</subject><subject>Optical fibers</subject><subject>Optical filters</subject><subject>Optical reflection</subject><subject>optoelectronic oscillator</subject><subject>Optoelectronics</subject><subject>Oscillators</subject><subject>Reflection</subject><subject>Spatial resolution</subject><subject>Strain</subject><subject>Structural health monitoring</subject><issn>1041-1135</issn><issn>1941-0174</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkE1PwzAMhiMEEmNw58AhEucO56ttjrAxQKoY0sY5SttU6hSakqSH_XsybQcOli37fW3rQeiewIIQkE_V125BgbIFY1wIBhdoRiQnGZCCX6YaUk0IE9foJoQ9AOGC8Rn6XE_WHvCqD9H39RRNi7fR637AWzME5_GLDqnnBqzxatI2q5wb8WaMzljTRO-GvsGb0PTW6uj8LbrqtA3m7pzn6Hv9ulu-Z9Xm7WP5XGUN5SJmREpd1kUNBes4FzURdd6JmgNpaA6tbsqcmkJwQXLZ8pK1aSCAd7VJQblkc_R42jt69zuZENXeTX5IJxWVkJy0lCyp4KRqvAvBm06Nvv_R_qAIqCM1laipIzV1ppYsDydLb4z5J2d5CemRPwKnZ2s</recordid><startdate>20240201</startdate><enddate>20240201</enddate><creator>Gao, Lingge</creator><creator>Wang, Yiping</creator><creator>Shi, Jingzhan</creator><creator>Liu, Qiang</creator><creator>Lin, Dongdong</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based on the sensing principle of OEO and the wavelength-position one-to-one mapping mechanism in LCFBG. The interrogation method is simple and fast by processing the sensing information in the RF domain. With the help of the dual-loop OEO, the frequency fluctuation of the signal is only 1.8% of that of the single-loop OEO, which enhances the stability of the system and thus improves the measurement accuracy. To verify the feasibility of the proposed method, a non-uniform distributed strain sensing experiment was performed. The results show that a high spatial resolution of 0.29 mm and a sensing resolution of <inline-formula> <tex-math notation="LaTeX">0.6~\mu \varepsilon </tex-math></inline-formula> were achieved over a length of 53 mm. 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| source | IEEE Electronic Library (IEL) |
| subjects | Bragg gratings distributed strain sensor Feasibility Interrogation Linearly chirped fiber Bragg grating Microwave filters Microwave oscillators microwave photonics Optical fibers Optical filters Optical reflection optoelectronic oscillator Optoelectronics Oscillators Reflection Spatial resolution Strain Structural health monitoring |
| title | Fully Distributed Strain Sensor Based on a Dual-Loop Optoelectronic Oscillator |
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