In this paper, a novel liquid refractive index(RI) sensor based on fused tapered photonic crystal fiber(PCF) is proposed. It is fabricated by fusing and tapering a section of PCF which is spliced with two single-mode ...In this paper, a novel liquid refractive index(RI) sensor based on fused tapered photonic crystal fiber(PCF) is proposed. It is fabricated by fusing and tapering a section of PCF which is spliced with two single-mode fibers(SMFs). Due to the fused biconical taper method, the sensor becomes longer and thinner, to make the change of the outside RI has more direct effects on the internal optical field of the PCF, which finally enhances the sensitivity of this sensor. Experimental results show that the transmission spectra of the sensor are red-shifted obviously with the increase of RI. The longer the tapered region of the sensor, the higher the sensitivity is. This sensor has the advantages of simple structure, easy fabrication, high performance and so on, so it has potential applications in RI measurement.展开更多
In this paper,a novel refractive index(RI) sensor is proposed based on the fused tapered special multi-mode fiber(SMMF).Firstly,a section of SMMF is spliced between two single-mode fibers(SMFs).Then,the SMMF is proces...In this paper,a novel refractive index(RI) sensor is proposed based on the fused tapered special multi-mode fiber(SMMF).Firstly,a section of SMMF is spliced between two single-mode fibers(SMFs).Then,the SMMF is processed by a fused tapering machine,and a tapered fiber structure is fabricated.Finally,a fused tapered SMMF sensor is obtained for measuring external RI.The RI sensing mechanism of tapered SMMF sensor is analyzed in detail.For different fused tapering lengths,the experimental results show that the RI sensitivity can be up to 444.517 81 nm/RIU in the RI range of 1.334 9—1.347 0.The RI sensitivity is increased with the increase of fused tapering length.Moreover,it has many advantages,including high sensitivity,compact structure,fast response and wide application range.So it can be used to measure the solution concentration in the fields of biochemistry,health care and food processing.展开更多
In this paper,a temperature sensor based on the splicing of a core offset multi-mode fiber with two single mode fibers is proposed and demonstrated experimentally.The temperature sensing principle is analyzed and rela...In this paper,a temperature sensor based on the splicing of a core offset multi-mode fiber with two single mode fibers is proposed and demonstrated experimentally.The temperature sensing principle is analyzed and related experiment is performed.By controlling the core offset and splicing length of the specialty multi-mode fiber(SMMF),two sensors with different temperature sensing properties are obtained,and experimental results show that the temperature sensitivity can be up to 48.76 pm/℃ in the range of 25-95 ℃.Moreover,it has many advantages,including small size,high sensitivity,and simple structure.So it can be used in potential temperature sensing applications,such as industrial production,biomedical science,power electronics,and so on.展开更多
基金supported by the National Natural Science Foundation of China(Nos.6120506861475133 and 61575170)+4 种基金the College Youth Talent Project of Hebei Province(No.BJ2014057)the Hebei Provincial Natural Science Foundation(No.F2015203270)the Hebei Provincial Science and Technology Program(Nos.15273304D and 14273301D)the"XinRuiGongCheng"Talent Projectthe Excellent Youth Funds for School of Information Science and Engineering in Yanshan University(No.2014201)
文摘In this paper, a novel liquid refractive index(RI) sensor based on fused tapered photonic crystal fiber(PCF) is proposed. It is fabricated by fusing and tapering a section of PCF which is spliced with two single-mode fibers(SMFs). Due to the fused biconical taper method, the sensor becomes longer and thinner, to make the change of the outside RI has more direct effects on the internal optical field of the PCF, which finally enhances the sensitivity of this sensor. Experimental results show that the transmission spectra of the sensor are red-shifted obviously with the increase of RI. The longer the tapered region of the sensor, the higher the sensitivity is. This sensor has the advantages of simple structure, easy fabrication, high performance and so on, so it has potential applications in RI measurement.
基金supported by the National Natural Science Foundation of China(Nos.61205068 and 61475133)the Hebei Province Science and Technology Support Program(Nos.15273304D and 14273301D)+1 种基金the College Youth Talent Project of Hebei Province(No.BJ2014057)the“Xin Rui Gong Cheng”Talent Project and the Excellent Youth Funds for School of Information Science and Engineering in Yanshan University(No.2014201)
文摘In this paper,a novel refractive index(RI) sensor is proposed based on the fused tapered special multi-mode fiber(SMMF).Firstly,a section of SMMF is spliced between two single-mode fibers(SMFs).Then,the SMMF is processed by a fused tapering machine,and a tapered fiber structure is fabricated.Finally,a fused tapered SMMF sensor is obtained for measuring external RI.The RI sensing mechanism of tapered SMMF sensor is analyzed in detail.For different fused tapering lengths,the experimental results show that the RI sensitivity can be up to 444.517 81 nm/RIU in the RI range of 1.334 9—1.347 0.The RI sensitivity is increased with the increase of fused tapering length.Moreover,it has many advantages,including high sensitivity,compact structure,fast response and wide application range.So it can be used to measure the solution concentration in the fields of biochemistry,health care and food processing.
基金supported by the National Natural Science Foundation of China(Nos.61205068 and 61475133)College Youth Talent Project of Hebei Province(No.BJ2014057)+1 种基金"Xin Rui Gong Cheng"Talent Project the Excellent Youth Funds for School of Information Science and Engineering of Yanshan University(No.2014201)
文摘In this paper,a temperature sensor based on the splicing of a core offset multi-mode fiber with two single mode fibers is proposed and demonstrated experimentally.The temperature sensing principle is analyzed and related experiment is performed.By controlling the core offset and splicing length of the specialty multi-mode fiber(SMMF),two sensors with different temperature sensing properties are obtained,and experimental results show that the temperature sensitivity can be up to 48.76 pm/℃ in the range of 25-95 ℃.Moreover,it has many advantages,including small size,high sensitivity,and simple structure.So it can be used in potential temperature sensing applications,such as industrial production,biomedical science,power electronics,and so on.