Optical fiber sensitive element metallized packaging structure and its method

A technology of sensitive components and packaging structures, applied in the direction of electrical components, coupling of optical waveguides, electromagnetic wave transmission systems, etc., can solve the problems of affecting the linearity and repeatability of measurement, easy aging and decomposition, unfavorable long-term use, etc., to avoid aging and redundancy, good linearity and repeatability

Active Publication Date: 2005-08-03
WUHAN WUTOS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The existing packaging technology has the following defects: First, the resin glue is an organic substance, which is easy to age and decompose,

Method used

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  • Optical fiber sensitive element metallized packaging structure and its method
  • Optical fiber sensitive element metallized packaging structure and its method

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Embodiment Construction

[0012] Such as figure 1 As shown in ., the present invention is a metallized packaging structure for optical fiber sensitive components, mainly comprising optical fiber sensitive components (1), metal tubes or metal sheets (2), characterized in that the surface of the optical fiber sensitive components has a metal coating (5), and There are metal welding spots (3) to weld the optical fiber sensitive element (1) and the metal pipe or metal sheet (2).

[0013] Its implementation steps are as follows figure 2 It shows that the outer cladding (6) of the hydrogen-carrying optical fiber is removed, and a grating (1) of a specific wavelength is written in the position of the bare optical fiber (4) with an excimer laser.

[0014] Degreasing: Wipe the surface of the fiber several times with an alcohol cotton ball, and then use less than 100gL -1 Soak in NaOH solution for 10 minutes, take it out and rinse thoroughly with deionized water.

[0015] Coarsening: with F - or H 2 SiF 6...

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Abstract

The present invention provided a no-glue packing structure and method and for completing the metallized packing structure of sensitive fiber element via plating metal film and welding. The outer coating of hydrogen carrying fiber is eliminated and grating of specific wavelength is written to naked fiber position with quasi-molecular laser; the fiber grating is then surface cleaned, activated and plated first with metal nickel and then with metal gold; and the fiber grating is penetrated into metal tube before fixed on operation table or fixed directly on metal sheet, applied with pre-stress, and heated to weld onto metal tube or metal sheet. The sensor of the present invention has excellent linearity and repeatability.

Description

technical field [0001] The invention relates to an optical fiber sensitive element, in particular to a metallized packaging structure of an optical fiber grating and a packaging method thereof. Background technique [0002] Fiber grating is a kind of optical fiber sensitive element, which is often used in the field of optical fiber sensing and optical fiber communication. Because the component is sensitive and fragile, its packaging technology has become a key technology in engineering applications. Now the commonly used packaging technology is: After the finished fiber grating is packaged by a secondary coating machine and the outer cladding is added, it is packaged on a metal tube or metal sheet with a special resin glue. [0003] The existing packaging technology has the following defects: First, the resin glue is an organic substance, which is easy to age and decompose, which is not conducive to long-term use in harsh environments; Redundancy occurs in the measurement,...

Claims

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Application Information

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IPC IPC(8): G02B6/34
Inventor 姜德生李小甫范典梅加纯
Owner WUHAN WUTOS
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