Readable force application component for stressed long-period fiber gratings
A fiber grating and force applying component technology, which is applied in the field of readable force applying devices, can solve problems such as poor force stability, difficulty in achieving force uniformity, and complex structure, and achieve the effect of force stability
Inactive Publication Date: 2008-05-07
NANKAI UNIV
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Problems solved by technology
The existing force applying device is either difficult to accurately measure the magnitude of the stress, or it is difficult to achieve the uniformity of the force, or the structure is too complicated, and the stability of the force is also poor
Method used
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[0025] One end of the single-mode optical fiber 21 drawn from the square hole 19 of the force-applying member is connected to the broadband light source 20, and the other end is connected to the spectrum analyzer 22. A new double-layer template 23 is placed between the guide plate and the base below the force-applying member, and the single-mode optical fiber passes through the template. Pass through as a force-bearing object.
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This invention relates to a readable force device used in transmission filters, fiber grating transducers and mode converters aiming at realizing stability uniformity and readability of applying force in the preparation and adjustment of the stress long period fiber grating to further adjust its spectrum property. The component is composed of a reading device and a spring characterizing in including a reading device, a spring device, a guiding device and a frame, the shape of which is a cuboid box applying force to the grating template by the spring and guiding plate so as to alter the index of refraction of the fiber periodically on axial direction to form fiber grating.
Description
technical field [0001] The invention relates to a readable force application device, in particular to a fiber grating that can accurately measure the magnitude of stress and realize force uniformity, which is applied to transmission filters, fiber grating sensors, and mode converters in optical fiber communications. Read the force member. Background technique [0002] Stressed long-period fiber gratings are made by external force acting on the fiber to make the core refractive index change periodically in the axial direction, and the grating resonance strength can be adjusted by adjusting the stress. Existing force application devices are either difficult to accurately measure the magnitude of the stress, or difficult to achieve force uniformity, or the structure is too complex, and the force application stability is also poor. Contents of the invention [0003] The purpose of the present invention is to realize the stability, uniformity and readability of the applied for...
Claims
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IPC IPC(8): G01B11/16G01L1/24
Inventor 王新伟庄怀轩张振宇盛秋琴
Owner NANKAI UNIV