Wavelength divided duplexing equipment and packing method

Abstract

The present invention provides a wavelength division multiplexer and a packaging method, including a first, second graded refractive index lens, a filter coating, a first, second, third UV adhesive layer, a first, second A wave splitting unit of an optical fiber guide, and an outer tube unit having a tube wall, an accommodating space, and two closures, and the lenses respectively have a first, two end faces, a first outer peripheral surface, and a third, Four end faces, a second outer peripheral surface, the filter coating is coated on one of the first and third end faces, and the optical fiber guides respectively have a fifth and sixth end faces, a third outer peripheral face, at least one optical fiber, and a seventh and eighth end faces, a fourth outer peripheral surface, and at least one optical fiber, the UV adhesive layers are respectively coated on the first and second outer peripheral surfaces adjacent to the first and third end faces, the second The positions of the first and third outer peripheral surfaces adjacent to the second and fifth end surfaces, and the positions of the second and fourth outer peripheral surfaces adjacent to the fourth and seventh end surfaces.

Description

technical field [0001] The invention relates to a wavelength division multiplexer, in particular to a wavelength division multiplexer with a simplified structure and small volume and a packaging method. Background technique [0002] Such as figure 1 As shown, it is an existing wavelength division multiplexer, which includes a filter 1, a first graded refractive index lens 2, a second graded refractive index lens 3, a double fiber guide 4, a single fiber guide 5, a A thermosetting adhesive layer 6 that can fix the optical filter 1 and the first and second progressive index lenses 2 and 3, a thermosetting adhesive that can fix the first progressive index lens 2 and the double fiber guide 4 layer 601, and a thermosetting adhesive layer 602 that can fix the second progressive index lens 3 and the single fiber guide 5. When the wavelength division multiplexer is manufactured, the optical filter 1 and the first and second graded refractive index lenses 2 and 3 are fixed into one...

AI Technical Summary

Problems solved by technology

[0006] One, although this kind of wavelength division multiplexer can improve the above-mentioned problem that the thermosetting glue of the wavelength division multiplexer penetrates between the opposite end faces of the components, but the collar 801 must be added to position the optical filter 802, and the addition of the The glass tubes 903, 104 and the collimating steel tubes 904, 105 are used to position the first progressive index lens 901, the double fiber guide 902 and the second progressive lens 102, the single fiber guide 103, and increase the The collimation steel pipe 7 is used to weld the filter unit 8, the double fiber collimation unit 9 and the single fiber collimation unit 101. In addition, the first and second refractive index progressive lenses 901, 102 are connected with the filter 802 It is arranged separately, so this kind of wavelength division multiplexer not only has complicated components, but also increases the length in the axial direction and the width in the radial direction, resulting in an increase in volume

[0007] 2. The filter unit 8, the double-fiber collimation unit 9 and the single-fiber collimation unit 101 can be fixedly connected with the collimation steel pipe 7 through welding. packaging time, and the high temperature generated during soldering is more likely to destroy the glue between the interconnected components (for example, the glue between the first progressive index lens 901, the double fiber guide 902 and the glass tube 903) , resulting in relative movement of interconnected components, which affects the transmission of optical signals

[0008] 3. This kind of wavelength division multiplexer must first assemble the filter unit 8, the double-fiber collimation unit 9 and the single-fiber collimation unit 101 respectively before further overall packaging, which is not only troublesome, And it will increase the manufacturing man-hours of the packaging process

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