Adapter for connecting optical fiber and film

Abstract

The utility model discloses an adapter for connecting an optical fiber and a film, which comprises an optical fiber embedding head, a connecting body and a sleeve, and the sleeve is movably sleeved on the connecting body; the connector is internally provided with a light path, and one end of the sleeve away from the optical fiber embedding head is connected with an ordered porous film. According to the utility model, by optimizing the length of the light path formed by the connecting body of the adapter and the sleeve, the intensity of interference light signals generated by the collected film can be enhanced, and the signal-to-noise ratio of light can be improved; the arrangement of the overhead part avoids the influence of the adhesive on the refractive index of the optical medium when the film is connected with the adapter. The light guide column is connected, so that an optical medium is converted from air to solid, scattering in the light propagation process is reduced, and the collection rate of optical signals is improved; the adapter can be recycled, is suitable for fixation of films of different materials and sizes and connection of optical fibers of different sizes, and can be further used for development of biosensors.

Description

Technical Field

[0001] This utility model relates to the fixing and connection of optical fibers and thin films, specifically an adapter for connecting optical fibers and thin films. Background Technology

[0002] Ordered porous materials refer to a series of materials with pores of uniform size and arranged in an ordered spatial order, and can be inorganic materials or organic polymer materials. Ordered porous materials have broad application prospects in fields such as life sciences, chemistry, information technology, environment, and energy, and provide model carriers for the study of fundamental questions such as interactions between matter, energy transfer, and the behavior of matter under extreme conditions.

[0003] Colloidal crystals are ordered porous nanostructured materials and can also be used as templates for preparing other ordered porous nanostructures, making them widely used ordered porous materials. These materials have highly ordered crystal structures and exhibit significant Bragg diffraction, which can be attributed to the constructive interference of light waves at specific wavelengths. Diffraction effects are widely applied in various fields. However, the normal interference effects of ordered porous materials have not received sufficient attention; only a few researchers have focused on this aspect. In fact, interferometry based on the optical effects of ordered porous materials has higher sensitivity and reliability than diffraction measurements. Biosensing platforms based on the interference effects of single-layer planar thin films have been developed, such as Biolayer Interferometry (BLI). However, the small specific surface area of ​​planar thin films limits their further applications. Therefore, it is necessary to introduce ordered porous materials into optical interferometry to broaden the application scenarios of this technology.

[0004] The three essential components of optical interferometry are a light source, an optical thin film, and a spectrometer. These three are typically directly connected using Y-shaped optical fibers. Their respective functions are to generate light, generate optical interference signals, and acquire and analyze optical signals. Finally, the digital signals generated by the spectrometer are input into a computer for analysis and processing. While the interfaces between the light source and optical fiber, the spectrometer and optical fiber, and the spectrometer and computer are already mass-produced and widely available, the optical thin film, due to its variable shape and material, lacks a stable connection device with the optical fiber. Utility Model Content

[0005] Purpose of the invention: The purpose of this invention is to provide a stable and reliable adapter for connecting optical fibers and thin films.

[0006] Technical solution: The present invention provides an adapter for connecting optical fiber and thin film, comprising an optical fiber connector, a connector body and a sleeve, wherein the sleeve is movably fitted onto the connector body; the connector body has an internal optical path, and the end of the sleeve away from the optical fiber connector is connected to an ordered porous thin film.

[0007] Furthermore, the fiber optic connector is truncated conical in shape with uniformly spaced slots, and is an elastic component.

[0008] Furthermore, the outer surface of the connector is provided with several connecting grooves, and positioning grooves are evenly arranged in the connecting grooves. Protrusions are evenly arranged in the sleeve at positions opposite to the connecting grooves, and the protrusions can be moved and engaged in the positioning grooves.

[0009] Furthermore, the sleeve has an internal vent to prevent the adhesive used when connecting the film and the adapter from affecting the refractive index of the optical medium.

[0010] Furthermore, the optical path is an inserted, smooth-surfaced light guide post, which transforms the optical medium from air to a solid, reducing scattering during light propagation and improving the light signal collection rate.

[0011] Furthermore, the ordered porous membrane is an inorganic membrane or an organic polymer membrane, and the ordered porous membrane is connected to the sleeve by an adhesive.

[0012] Furthermore, the clamping plate formed by the slot-equalized fiber optic connector has a chamfer inside at the top. The chamfer facilitates fiber insertion and connection and prevents wear on the fiber optic connector end.

[0013] The principle of this invention: The cylindrical cavity formed by the fiber optic connector of the adapter is used to nest and fix different types of optical fibers. An optical path is provided inside the connector. A sleeve is movable and fitted onto the connector, with an ordered porous film adhered to its tail end. The length of the optical path is adjusted by the movable fitting of the connector and the sleeve. Light emitted from the light source travels from the optical fiber through the optical path penetrating inside the connector or through the extended optical path formed inside the sleeve to reach the ordered porous film.

[0014] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0015] 1. Optimizing the length of the optical path formed by the connector and the sleeve of the adapter can enhance the intensity of the interference light signal generated by the collected thin film, which is beneficial to improving the signal-to-noise ratio of light;

[0016] 2. The design of the overhead section avoids the influence of the adhesive used when connecting the film and the adapter on the refractive index of the optical medium;

[0017] 3. The insertion of the light guide column changes the optical medium from air to solid, reducing scattering during light propagation and improving the light signal collection rate;

[0018] 4. The adapter can be recycled and is suitable for fixing films of different materials and sizes and connecting optical fibers of different sizes, which can be further used in the development of biosensors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the combination of the present invention and the ordered porous film 5;

[0023] Figure 5 This is a schematic diagram illustrating the use of this utility model. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, the flexible frustoconical fiber optic connector 1 of the adapter described in this utility model is divided into four clamping pieces 11 by the slot 6. The fiber optic connector 1 is fixedly connected to the connector body 2. Four connecting slots 7 are evenly distributed on the surface of the connector body 2. The interior of the connecting slots 7 is evenly provided with positioning grooves 8. The sleeve 3 is movably sleeved on the connector body 2.

[0026] like Figures 2-4 As shown, the sleeve 3 moves and fits onto the surface of the connector 2. The outer surface of the connector 2 has several connecting grooves 7, and positioning grooves 8 are evenly arranged within the connecting grooves 7. Each positioning groove 8 is a hemispherical groove. Protrusions 9 are evenly arranged inside the sleeve 3 relative to the connecting grooves 7, and the hemispherical protrusions 9 are moved and engaged within the positioning grooves 8. When the length of the optical path 4 needs to be adjusted, the sleeve 3 is fitted onto the connector 2. The position of the sleeve 3 is determined according to the number of positioning grooves 8. The internal channel formed by the sleeve 3 and the connector 2 serves as the extended optical path 4. An ordered porous film 5 is connected to the tail end of the sleeve 3 using an adhesive. Specifically, the ordered porous film is an organic polymer film. The truncated portion 10 inside the tail end of the sleeve 3 prevents the adhesive used when connecting the ordered porous film 5 to the adapter from affecting the refractive index of the optical medium, and also serves to limit the movement of the sleeve 3 and the connector 2. A light guide column is inserted into the optical path 4, changing the optical medium from air to a solid, reducing scattering during light propagation and improving the light signal collection rate.

[0027] like Figure 5As shown, during use, the optical fiber is inserted into the elastic optical fiber connector 1 of the adapter. The clamping piece 11 of the truncated cone-shaped connector is squeezed outward by the optical fiber and springs open. The chamfer on the inner side of the top of the clamping piece 11 facilitates the insertion and connection of the optical fiber and prevents the end of the optical fiber connector 1 from abrading the optical fiber. The ordered porous film 5 is connected to the tail end of the sleeve 3 with adhesive. The other optical fibers of the Y-shaped optical fiber are connected to the light source and the spectrometer respectively. When the light emitted from the light source is emitted from the optical fiber, it will pass through the light path 4 that runs through the inside of the adapter and reach the ordered porous film 5 directly. A smooth light guide post can be inserted into the light path 4 inside the adapter to guide the light signal.

Claims

1. An adapter for connecting an optical fiber and a thin film, characterized in that: It includes an optical fiber connector (1), a connector (2) and a sleeve (3), wherein the sleeve (3) is movably fitted onto the connector (2); the connector (2) has an optical path (4) inside, and an ordered porous film (5) is connected to the end of the sleeve (3) away from the optical fiber connector (1).

2. The adapter for connecting optical fiber and thin film according to claim 1, characterized in that: The fiber optic connector (1) is truncated cone-shaped with uniformly spaced slots (6), and is an elastic component.

3. The adapter for connecting optical fibers and thin films according to claim 1, characterized in that: The outer surface of the connector (2) is provided with several connecting grooves (7), and the connecting grooves (7) are uniformly provided with positioning grooves (8). The sleeve (3) is uniformly provided with protrusions (9) at positions opposite to the connecting grooves (7), and the protrusions (9) can be moved and engaged in the positioning grooves (8).

4. The adapter for connecting optical fiber and thin film according to claim 1, characterized in that: The sleeve (3) has an internal support section (10) at its tail end.

5. The adapter for connecting optical fiber and thin film according to claim 1, characterized in that: The optical path (4) is an inserted, smooth-surfaced light guide post.

6. The adapter for connecting optical fiber and thin film according to claim 1, characterized in that: The ordered porous film (5) is an inorganic film or an organic polymer film, and the ordered porous film (5) is connected to the sleeve (3) by an adhesive.

7. The adapter for connecting optical fiber and thin film according to claim 2, characterized in that: The slot (6) is evenly distributed with the optical fiber connector (1) forming a clamping piece (11) with a chamfer inside the top.

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