Core fiber check device and core fiber check method
A technology of detection equipment and detection method, which is applied in the direction of measuring device, optical instrument test, machine/structural component test, etc., and can solve the problems of large allowable bending radius of optical fiber and poor operability
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no. 1 approach
[0050] refer to Figure 1A to Figure 1C , Figure 2A and Figure 2BThe first embodiment of the core wire inspection device and method of the present invention will be described. In this embodiment, the case of applying to an optical fiber with improved bending loss characteristics will be described.
[0051] Figure 1A and Figure 1B It is a figure for demonstrating the core wire detection apparatus of 1st Embodiment of this invention. Figure 1A show its outline, Figure 1B It is a graph showing the relationship between the portion where stress is applied by the grating forming tool included in the core wire detection device and the amount of change in the refractive index. In addition, in Figure 1A In , λ1 represents the propagating mode propagating in the fiber, and λ1′ represents the leaked light from the fiber.
[0052] The core wire inspection facility 100 of this embodiment includes a grating forming tool 20 (grating forming device), a light receiver 30 (light rec...
no. 2 approach
[0102] refer to Figure 12A and Figure 12B A core wire detection device according to a second embodiment of the present invention will be described.
[0103] Figure 12A and Figure 12B It is a figure for demonstrating the core wire detection apparatus of 2nd Embodiment of this invention. Figure 12A Indicates the case where one optical fiber bending imparting mechanism is provided, Figure 12B Indicates the case where two optical fiber bending imparting mechanisms are provided.
[0104] This embodiment is a device in which an optical fiber bending imparting mechanism is added to the core wire detection device of the first embodiment described above.
[0105] In this embodiment, the same reference numerals are given to the same devices as those of the core wire detection device of the first embodiment described above, and descriptions thereof are omitted.
[0106] Such as Figure 12A As shown, the core wire inspection device 400 of this embodiment includes an optical f...
no. 3 approach
[0116] refer to Figure 14 A core wire detection device according to a third embodiment of the present invention will be described.
[0117] Figure 14 is a diagram schematically showing a core wire detection device according to a third embodiment of the present invention.
[0118] The core wire testing device of the present embodiment is a device in which the grating forming tool and the optical fiber bending imparting mechanism included in the core wire testing device of the above-mentioned second embodiment are installed in the same tool.
[0119] In this embodiment, the same reference numerals are given to the same devices (photoreceiver 30 ) as those of the core wire detection device of the second embodiment described above, and description thereof will be omitted.
[0120] Such as Figure 14 As shown, the core wire inspection device 500 of this embodiment includes an optical fiber bending imparting mechanism 510, a grating forming tool 520 (grating forming device), a ...
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