The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Dewen Duan - One of the best experts on this subject based on the ideXlab platform.
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high sensitivity gas refractometer based on all fiber open cavity fabry perot interferometer formed by large Lateral Offset splicing
Journal of The Optical Society of America B-optical Physics, 2012Co-Authors: Dewen Duan, Yunjiang Rao, Tao ZhuAbstract:A compact, all-fiber, open-cavity Fabry–Perot interferometer gas refractometer formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of SMFs with a large Lateral Offset is proposed. Only simple fabrication steps including cleaving and fusion splicing are involved, so the fabrication is easy, safe, and cost effective. Such fabricated sensors have been successfully demonstrated as gas refractometers having a refractive index response of high sensitivity (∼1540nm/RIU), good linearity, and high repeatability. Temperature evaluations also show that this kind of interferometer has a very low thermal sensitivity.
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High sensitivity gas refractometer based on all-fiber open-cavity Fabry–Perot interferometer formed by large Lateral Offset splicing
Journal of The Optical Society of America B-optical Physics, 2012Co-Authors: Dewen DuanAbstract:A compact, all-fiber, open-cavity Fabry–Perot interferometer gas refractometer formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of SMFs with a large Lateral Offset is proposed. Only simple fabrication steps including cleaving and fusion splicing are involved, so the fabrication is easy, safe, and cost effective. Such fabricated sensors have been successfully demonstrated as gas refractometers having a refractive index response of high sensitivity (∼1540nm/RIU), good linearity, and high repeatability. Temperature evaluations also show that this kind of interferometer has a very low thermal sensitivity.
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in fiber mach zehnder interferometer formed by large Lateral Offset fusion splicing for gases refractive index measurement with high sensitivity
Sensors and Actuators B-chemical, 2011Co-Authors: Dewen Duan, Laicai Xu, D. WuAbstract:Abstract A versatile, compact and sensitive in-fiber open cavity Mach–Zehnder interferometer (MZI) gas refractive index (RI) sensor formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of single-mode fibers with a large intentional Lateral Offset is demonstrated. The fabrication is easy, safe, and cost effective. Gas or other materials can contact with the light signal in the totally open cavity of sensor directly and easily, thus the ambient refractive index (RI) change can be detected very quickly. We discussed the fabrication and operation of the sensor, and we successfully used the sensor to monitor changes of refractive index of air as a function of pressure and obtained a sensitivity of over 3402 nm/RIU (refractive index unit) with good linearity and repeatability.
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In-fiber Mach–Zehnder interferometer formed by large Lateral Offset fusion splicing for gases refractive index measurement with high sensitivity
Sensors and Actuators B-chemical, 2011Co-Authors: Dewen Duan, Laicai Xu, D. WuAbstract:Abstract A versatile, compact and sensitive in-fiber open cavity Mach–Zehnder interferometer (MZI) gas refractive index (RI) sensor formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of single-mode fibers with a large intentional Lateral Offset is demonstrated. The fabrication is easy, safe, and cost effective. Gas or other materials can contact with the light signal in the totally open cavity of sensor directly and easily, thus the ambient refractive index (RI) change can be detected very quickly. We discussed the fabrication and operation of the sensor, and we successfully used the sensor to monitor changes of refractive index of air as a function of pressure and obtained a sensitivity of over 3402 nm/RIU (refractive index unit) with good linearity and repeatability.
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in line all fiber fabry perot and mach zehnder interferometers formed by hollow fiber with Lateral Offset
21st International Conference on Optical Fibre Sensors (OFS21), 2011Co-Authors: Dewen Duan, Laicai Xu, Ming DengAbstract:Two kinds of novel in-line all-fiber interferometers, including tip Farby-Perot interferometer and compact Mach-Zehnder interferometer, are proposed and demonstrated by automatically fusion splicing a short section of hollow fiber to the end of a single-mode fiber (SMF) and sandwiching a section of hollow fiber in two section of SMF with a tiny intentional Lateral Offset that induces the optical path difference (OPD) required to form the two interferometers, respectively. Temperature responses of both the two interferometers are studied experimentally. It is anticipated that such an easy making, compact and low cost fiber-optic interferometers could find important applications in practice.
Pengcheng Geng - One of the best experts on this subject based on the ideXlab platform.
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a mach zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two dimensional bending vector sensing
Journal of Optics, 2014Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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A Mach–Zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two-dimensional bending vector sensing
Journal of Optics, 2013Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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Compact Long Period Fiber Grating Based on Periodic Micro-Core-Offset
IEEE Photonics Technology Letters, 2013Co-Authors: Weigang Zhang, Pengcheng Geng, Hao Zhang, Jieliang LiAbstract:A novel long period fiber grating (LPFG) fabrication method has been proposed and experimentally demonstrated. This method is based on periodically arranging micro-core-Offsets (MCOs) along an optical fiber. The MCO is formed by splicing two fiber ends with a purposed Lateral Offset, which results in a strong refractive index modulation by changing the fiber geometry. The Lateral Offset value of the MCO can be adjusted to control the coupling constant and grating length. With a Lateral Offset value of 3.5 μm, a very short MCO-LPFG with a length of 1.09 mm can be formed by only three MCOs. Several MCO-LPFGs with different parameters have been fabricated and the sensing characteristics of the MCO-LPFGs have been discussed as well.
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fiber optic bending vector sensor based on mach zehnder interferometer exploiting Lateral Offset and up taper
Optics Letters, 2012Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng GengAbstract:A simple, compact, and highly sensitive optical fiber directional bend sensor is presented. This device consists of a Lateral-Offset splicing joint and an up-taper formed through excessive fusion splicing method. The Lateral-Offset splicing breaks the cylindrical symmetry of the fiber and defines a pair of directions along which the bending response of the Mach–Zehnder interferometer transmission spectrum is different and thus could be used for bending vector measurement. For a curvature range from −3 to 3 m−1, the bending sensitivities at 1463.86 nm and 1548.41 nm reach 11.987 nm/m−1 and 8.697 nm/m−1, respectively.
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Fiber-optic bending vector sensor based on Mach–Zehnder interferometer exploiting Lateral-Offset and up-taper
Optics Letters, 2012Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng GengAbstract:A simple, compact, and highly sensitive optical fiber directional bend sensor is presented. This device consists of a Lateral-Offset splicing joint and an up-taper formed through excessive fusion splicing method. The Lateral-Offset splicing breaks the cylindrical symmetry of the fiber and defines a pair of directions along which the bending response of the Mach–Zehnder interferometer transmission spectrum is different and thus could be used for bending vector measurement. For a curvature range from −3 to 3 m−1, the bending sensitivities at 1463.86 nm and 1548.41 nm reach 11.987 nm/m−1 and 8.697 nm/m−1, respectively.
Weigang Zhang - One of the best experts on this subject based on the ideXlab platform.
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bending vector sensor based on mach zehnder interferometer using s type fibre taper and Lateral Offset
Journal of Modern Optics, 2016Co-Authors: Jianhao Zhang, Weigang Zhang, Yanxin Zhang, Biao Wang, Lei Chen, Li WangAbstract:AbstractA novel, simple and highly sensitive bend vector sensor is proposed and experimentally demonstrated for directional bending measurement. This sensor consists of a Lateral-Offset and an S fibre taper processed through special fusion splicing method. The asymmetrical fibre structure of S fibre taper and Lateral-Offset determined a pair of directions along which the bending response to the transmission spectrum is different. Thus, it can be used for bending vector measurement. For a curvature range from −4 to +4 m−1, the bending sensitivities near 1550 nm reach 0.70807 and 0.99695 nm/m−1, respectively.
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Bending vector sensor based on Mach–Zehnder interferometer using S type fibre taper and Lateral-Offset
Journal of Modern Optics, 2016Co-Authors: Jianhao Zhang, Weigang Zhang, Yanxin Zhang, Biao Wang, Lei Chen, Li WangAbstract:AbstractA novel, simple and highly sensitive bend vector sensor is proposed and experimentally demonstrated for directional bending measurement. This sensor consists of a Lateral-Offset and an S fibre taper processed through special fusion splicing method. The asymmetrical fibre structure of S fibre taper and Lateral-Offset determined a pair of directions along which the bending response to the transmission spectrum is different. Thus, it can be used for bending vector measurement. For a curvature range from −4 to +4 m−1, the bending sensitivities near 1550 nm reach 0.70807 and 0.99695 nm/m−1, respectively.
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a mach zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two dimensional bending vector sensing
Journal of Optics, 2014Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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A Mach–Zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two-dimensional bending vector sensing
Journal of Optics, 2013Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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Compact Long Period Fiber Grating Based on Periodic Micro-Core-Offset
IEEE Photonics Technology Letters, 2013Co-Authors: Weigang Zhang, Pengcheng Geng, Hao Zhang, Jieliang LiAbstract:A novel long period fiber grating (LPFG) fabrication method has been proposed and experimentally demonstrated. This method is based on periodically arranging micro-core-Offsets (MCOs) along an optical fiber. The MCO is formed by splicing two fiber ends with a purposed Lateral Offset, which results in a strong refractive index modulation by changing the fiber geometry. The Lateral Offset value of the MCO can be adjusted to control the coupling constant and grating length. With a Lateral Offset value of 3.5 μm, a very short MCO-LPFG with a length of 1.09 mm can be formed by only three MCOs. Several MCO-LPFGs with different parameters have been fabricated and the sensing characteristics of the MCO-LPFGs have been discussed as well.
Shanshan Zhang - One of the best experts on this subject based on the ideXlab platform.
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a mach zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two dimensional bending vector sensing
Journal of Optics, 2014Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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A Mach–Zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two-dimensional bending vector sensing
Journal of Optics, 2013Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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fiber optic bending vector sensor based on mach zehnder interferometer exploiting Lateral Offset and up taper
Optics Letters, 2012Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng GengAbstract:A simple, compact, and highly sensitive optical fiber directional bend sensor is presented. This device consists of a Lateral-Offset splicing joint and an up-taper formed through excessive fusion splicing method. The Lateral-Offset splicing breaks the cylindrical symmetry of the fiber and defines a pair of directions along which the bending response of the Mach–Zehnder interferometer transmission spectrum is different and thus could be used for bending vector measurement. For a curvature range from −3 to 3 m−1, the bending sensitivities at 1463.86 nm and 1548.41 nm reach 11.987 nm/m−1 and 8.697 nm/m−1, respectively.
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Fiber-optic bending vector sensor based on Mach–Zehnder interferometer exploiting Lateral-Offset and up-taper
Optics Letters, 2012Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng GengAbstract:A simple, compact, and highly sensitive optical fiber directional bend sensor is presented. This device consists of a Lateral-Offset splicing joint and an up-taper formed through excessive fusion splicing method. The Lateral-Offset splicing breaks the cylindrical symmetry of the fiber and defines a pair of directions along which the bending response of the Mach–Zehnder interferometer transmission spectrum is different and thus could be used for bending vector measurement. For a curvature range from −3 to 3 m−1, the bending sensitivities at 1463.86 nm and 1548.41 nm reach 11.987 nm/m−1 and 8.697 nm/m−1, respectively.
Li Wang - One of the best experts on this subject based on the ideXlab platform.
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bending vector sensor based on mach zehnder interferometer using s type fibre taper and Lateral Offset
Journal of Modern Optics, 2016Co-Authors: Jianhao Zhang, Weigang Zhang, Yanxin Zhang, Biao Wang, Lei Chen, Li WangAbstract:AbstractA novel, simple and highly sensitive bend vector sensor is proposed and experimentally demonstrated for directional bending measurement. This sensor consists of a Lateral-Offset and an S fibre taper processed through special fusion splicing method. The asymmetrical fibre structure of S fibre taper and Lateral-Offset determined a pair of directions along which the bending response to the transmission spectrum is different. Thus, it can be used for bending vector measurement. For a curvature range from −4 to +4 m−1, the bending sensitivities near 1550 nm reach 0.70807 and 0.99695 nm/m−1, respectively.
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Bending vector sensor based on Mach–Zehnder interferometer using S type fibre taper and Lateral-Offset
Journal of Modern Optics, 2016Co-Authors: Jianhao Zhang, Weigang Zhang, Yanxin Zhang, Biao Wang, Lei Chen, Li WangAbstract:AbstractA novel, simple and highly sensitive bend vector sensor is proposed and experimentally demonstrated for directional bending measurement. This sensor consists of a Lateral-Offset and an S fibre taper processed through special fusion splicing method. The asymmetrical fibre structure of S fibre taper and Lateral-Offset determined a pair of directions along which the bending response to the transmission spectrum is different. Thus, it can be used for bending vector measurement. For a curvature range from −4 to +4 m−1, the bending sensitivities near 1550 nm reach 0.70807 and 0.99695 nm/m−1, respectively.
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a mach zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two dimensional bending vector sensing
Journal of Optics, 2014Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
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A Mach–Zehnder interferometer constructed using Lateral Offset and a long period fiber grating for two-dimensional bending vector sensing
Journal of Optics, 2013Co-Authors: Shanshan Zhang, Weigang Zhang, Pengcheng Geng, Li WangAbstract:We report a two-dimensional bending vector sensor based on a Mach–Zehnder interferometer (MZI). The device consists of a strong coupling long period fiber grating (LPFG) and a slight-Lateral-Offset fusion splicing joint which can generate an interference pattern and keep the resonance dip of the LPFG relatively independent at the same time. The exposure orientation of the LPFG is perpendicular to the Lateral-Offset orientation, making it capable of identifying two-dimensional bending directions and amplitude simultaneously. Two-dimensional bending vector sensing characteristics, especially in the four orthogonal directions based on the new structured MZI, have been experimentally demonstrated. Temperature cross-sensitivity is eliminated using the different sensitivities of the two resonance dips. The device will have great potential in shape sensing applications due to the advantages of its vector sensing capability, low cost and ease of fabrication.
