Small-size optical fiber electric field detection device
A fiber optic electric field and detection device technology, applied in the field of electric field detection, can solve problems such as large size
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Embodiment 1
[0021] The invention provides a small-sized optical fiber electric field detection device, such as figure 1 As shown, it includes an optical fiber 1 , an organic conjugated polymer material part 2 , a heating part 3 , a first force applying part 4 and a second force applying part 5 . Fiber 1 is a single-mode fiber. The first force applying part 4 is fixed on the optical fiber 1 , specifically, the first force applying part 4 is fixed on the optical fiber 4 in a surrounding manner. One side of the organic conjugated polymer material part 2 is fixed on the end face of the optical fiber 1 , and the opposite side of the organic conjugated polymer material part 2 is fixedly connected to one side of the heating part 3 . That is, the organic conjugated polymer material part 2 is fixed between the end face of the optical fiber 1 and the heating part 3 . The opposite side of the heating part 3 is fixedly connected with the second force applying part 5 . That is, the heating part 3 i...
Embodiment 2
[0024] On the basis of Example 1, such as figure 2 As shown, a noble metal film 6 is also included, and the material of the noble metal film 6 is gold, and the noble metal film 6 is fixed between the organic conjugated polymer material part 2 and the heating part 3 . That is to say, one surface of the noble metal film 6 is fixedly connected with the organic conjugated polymer material part 2 , and the other surface of the noble metal film 6 is fixedly connected with the heating part 3 . In this way, when the organic conjugated polymer material part 2 is relatively thick, the noble metal thin film 6 reflects the laser light propagating in the organic conjugated polymer material part 2, and a Fabry Perot layer is formed between the end face of the optical fiber 1 and the noble metal thin film 6. Interference cavity, because the resonant wavelength of the Fabry Perot interference cavity is very sensitive to the dielectric environment in the cavity and the length of the cavity, s...
Embodiment 3
[0026] On the basis of Example 1, such as image 3 As shown, noble metal particles 7 are also included, and the noble metal particles 7 are arranged in the organic conjugated polymer material part 2 . The material of noble metal particles 7 is gold or silver. The number of noble metal particles 7 is plural. Under laser irradiation, the noble metal particles 7 generate localized surface plasmon resonance. When the molecular chain direction of the organic conjugated polymer material part 2 changes, the width of the organic conjugated polymer material part 2 changes accordingly and the effective refractive index of the organic conjugated polymer material part 2 also changes accordingly, which not only The localized surface plasmon resonance on a single noble metal particle 7 is changed, and the coupling between adjacent noble metal particles 7 is changed, thereby changing the localized surface plasmon resonance wavelength of the noble metal particle 7 more. In this embodiment,...
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Abstract
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