Optical module receiving end

Abstract

The invention discloses an optical module receiving end, and belongs to the field of optical devices, the number of input optical fibers is 4N, the input optical fibers, lens arrays, wavelength division multiplexers, spherical lenses, capillary tubes and output optical fibers are sequentially arranged along the optical path direction, the number of the lens arrays, the number of the wavelength division multiplexers, the number of the spherical lenses, the number of the capillary tubes and the number of the output optical fibers are all N, the number of the substrates is one, the N parts are divided into at least two groups, the number of each group of parts is the same, the at least two groups of parts are fixed at different positions in the thickness direction of the substrates, every four input optical fibers generate four paths of parallel interval light which is incident to the lens array, the four paths of interval light are combined into one path of light through the wave combination effect of the wavelength division multiplexer, and the other path of light is combined into the other path of light through the wavelength division multiplexer. The synthesized light is converged by the spherical lens and then enters the output optical fiber through the capillary tube to be output, through the design, on the basis that the optical module receiving end converts 4N optical path input into N optical path output, the size of the substrate is reduced, and the optical module receiving end can be miniaturized.

Description

Technical Field

[0001] The invention relates to the field of optical devices, in particular to an optical module receiving end and a combiner / demultiplexer component comprising the optical module receiving end. Background Art

[0002] The light of the specified wavelength in the existing receiving end component is incident into the collimator through the optical fiber. After passing through the collimator, the collimated light beam is split into four beams through the wavelength division multiplexer. It enters the silicon array lens from the output end of the wavelength division multiplexer and forms four light paths at the focus through the turning of the prism. In this way, after the light is emitted from the laser, it passes through a series of components such as a wavelength division multiplexer to form four light beams.

[0003] However, this structure can only be used for the receiving end of a 4-channel optical module. When the number of optical channels exceeds 4, this solution cannot be used. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide an optical module receiving end that can be used when the number of optical channels is greater than 4.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A receiving end of an optical module comprises an input optical fiber, wherein the number of the input optical fibers is 4N, where N is an integer and N is greater than 1, and the receiving end of the optical module further comprises a substrate, a lens array, a wavelength division multiplexer, a spherical lens, a capillary and an output optical fiber, wherein the lens array, the wavelength division multiplexer, the spherical lens and the capillary are fixed to the substrate, and along the direction of the optical path, the input optical fiber, the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber are arranged in sequence, the number of the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber are all N, the number of the substrate is one, and the N lens arrays are N. The mirror array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber are divided into at least two groups, and the number of the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber in each group is the same. At least two groups of components are arranged at different positions in the thickness direction of the substrate. Every four input optical fibers generate four parallel paths of spaced light incident on the lens array. The four paths of spaced light emitted by the lens array are synthesized into one path of light through the wavelength division multiplexer. The synthesized light is converged by the spherical lens and then enters the output optical fiber through the capillary for output. The receiving end of the optical module converts the 4N optical path input into the N optical path output.

[0007] Furthermore, when the N lens arrays, the wavelength division multiplexer, the spherical lens, the capillary tube and the output optical fiber are divided into two groups, the two groups of components are arranged on the front and back surfaces of the substrate.

[0008] Furthermore, each group of the lens array, the wavelength division multiplexer, the spherical lens and the capillary is located in the same plane.

[0009] Furthermore, each group of the lens array, the wavelength division multiplexer, the spherical lens and the capillary are arranged in a row.

[0010] Furthermore, the receiving end of the optical module also includes a connector, and the 4N input optical fibers are installed on the connector.

[0011] Furthermore, the capillary is a square capillary.

[0012] Furthermore, the spherical lens is a C-lens lens.

[0013] Furthermore, the substrate is made of glass.

[0014] Furthermore, the lens array, the wavelength division multiplexer, the spherical lens and the capillary are UV-cured on the substrate using epoxy resin glue.

[0015] Furthermore, the receiving end of the optical module also includes a receiving terminal, the number of the receiving terminals is N, and each of the output optical fibers is connected to a receiving terminal.

[0016] Furthermore, adjacent light paths incident on the same lens array are spaced 0.75 mm apart.

[0017] Compared with the prior art, the number of input optical fibers at the receiving end of the optical module of the present invention is 4N, where N is an integer and N is greater than 1. The receiving end of the optical module also includes a substrate, a lens array, a wavelength division multiplexer, a spherical lens, a capillary and an output optical fiber. The lens array, the wavelength division multiplexer, the spherical lens and the capillary are fixed to the substrate. Along the light path direction, the input optical fiber, the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber are arranged in sequence. The number of the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber is N. The number of the substrate is one. The N lens arrays, the wavelength division multiplexers, the spherical lenses, the capillaries and the output optical fibers are divided into At least two groups, each group has the same number of lens arrays, wavelength division multiplexers, spherical lenses, capillaries and output optical fibers, at least two groups of components are arranged at different positions in the thickness direction of the substrate, every 4 input optical fibers generate 4 parallel paths of spaced light incident on the lens array, the 4 paths of spaced light emitted by the lens array are synthesized into one path of light through the wavelength division multiplexer, the synthesized light is converged by the spherical lens and then enters the output optical fiber through the capillary for output, the optical module receiving end converts the 4N optical path input into the N optical path output, through the above design, on the basis of converting the 4N optical path input into the N optical path output, the volume of the substrate is reduced, so that the optical module receiving end can be miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A top view of the receiving end of the optical module of the present invention;

[0019] Figure 2 for Figure 1 A bottom view of a receiving end of an optical module;

[0020] Figure 3 for Figure 1 A front view of the receiving end of the optical module;

[0021] Figure 4 for Figure 1 Light path diagram of the receiving end of the optical module.

[0022] In the figure: 101, receiving terminal; 107, output optical fiber; 102, capillary; 103, spherical lens; 104, wavelength division multiplexer; 105, lens array; 106, substrate; 108, input optical fiber; 109, connector; 110, fixing part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] Figures 1 to 4 This is the receiving end of the optical module of the present invention, and the receiving end of the optical module of the present invention is used to convert 4N input channels into N output channels.

[0027] The receiving end of the optical module includes a receiving terminal 101 , an output optical fiber 107 , a capillary 102 , a spherical lens 103 , a wavelength division multiplexer 104 , a lens array 105 , a substrate 106 , an input optical fiber 108 , a connector 109 and a fixing member 110 .

[0028] The number of receiving terminals 101, output optical fibers 107, capillaries 102, spherical lenses 103, wavelength division multiplexers 104, lens arrays 105 and fixings 110 is N, where N is an integer greater than 1, the number of input optical fibers 108 is 4N, and the number of connectors 109 and substrates 106 is one.

[0029] Along the optical path direction, the connector 109 is used to install 4N input optical fibers 108 so that the ends of the 4N input optical fibers 108 are bundled together.

[0030] 4N input optical fibers 108 are used to input 4N paths of light. The ends of the 4N input optical fibers 108 away from the connector 109 are fixed to the end of the substrate 106 by a fixing member 110. The 4N input optical fibers 108 are divided into at least two groups, and each group is fixed to different thickness positions of the end of the substrate 106 by a fixing member 110. In this embodiment, the 16 input optical fibers 108 are divided into two groups, each group has 8 input optical fibers 108, and the two groups of input optical fibers 108 are respectively fixed to the front and back sides of the substrate 106. In the process of fixing the 4N input optical fibers 108 to the end of the substrate 106, every 4 input optical fibers 108 are fixed by 1 fixing member 110, and among the 4 input optical fibers 108 fixed by the same fixing member 110, the optical paths output by two adjacent input optical fibers 108 are spaced 0.75 mm apart.

[0031] The substrate 106 is made of glass and is used to carry the capillary 102, the spherical lens 103, the wavelength division multiplexer 104 and the lens array 105. The capillary 102, the spherical lens 103, the wavelength division multiplexer 104 and the lens array 105 are UV-cured on the substrate 106 using epoxy resin glue. There is one substrate 106, and N capillaries 102, spherical lenses 103, wavelength division multiplexers 104, lens arrays 105 and fixing parts 110 are all fixed to one substrate 106. In the process of fixing the parts to the substrate 106, they are divided into multiple groups, and each group is fixed at a different height position of the substrate 106, so that the width of the substrate 106 can be reduced, which is conducive to miniaturization. In this embodiment, the components are divided into two groups. In each group of components, the number of capillaries 102, spherical lenses 103, wavelength division multiplexers 104, and lens arrays 105 is the same, which is 2. In each group of components, the capillaries 102, spherical lenses 103, wavelength division multiplexers 104, and lens arrays 105 are arranged in a row. Along the optical path, the fixing member 110, the lens array 105, the wavelength division multiplexer 104, the spherical lens 103, and the capillary 102 are arranged in sequence.

[0032] The lens array 105 is located between the fixing member 110 and the wavelength division multiplexer 104 .

[0033] The wavelength division multiplexer 104 can combine wavelengths. In this embodiment, the wavelength division multiplexer 104 combines four optical paths into one optical path.

[0034] The spherical lens 103 is used to converge light. Specifically, the spherical lens 103 is a C-lens lens.

[0035] The capillary 102 is a square capillary.

[0036] One end of the output optical fiber 107 is connected to the capillary 102 , and the other end is connected to the receiving terminal 101 .

[0037] The number of receiving terminals 101 is the same as the number of output optical fibers 107 , which is N.

[0038] In this embodiment, the number of receiving terminals 101, output optical fibers 107, capillaries 102, spherical lenses 103, wavelength division multiplexers 104, lens arrays 105 and fixings 110 is 4, the number of input optical fibers 108 is 16, and the number of connectors 109 and substrates 106 is one.

[0039] Every four input optical fibers 108 generate four parallel paths of spaced light that are incident on the lens array 105. The four paths of spaced light emitted by the lens array 105 are combined into one path of light through the wavelength division multiplexer 104. The combined light is converged by the spherical lens 103 and then enters the output optical fiber 107 through the capillary 102 for output. The receiving end of the optical module converts the 4N optical path input into N optical path output.

[0040] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. An optical module receiving end, comprising an input optical fiber, wherein the number of the input optical fibers is 4N, where N is an integer and N is greater than 1, and wherein: The receiving end of the optical module also includes a substrate, a lens array, a wavelength division multiplexer, a spherical lens, a capillary and an output optical fiber. The lens array, the wavelength division multiplexer, the spherical lens and the capillary are fixed to the substrate. Along the optical path, the input optical fiber, the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber are arranged in sequence. The number of the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber is N. The number of the substrate is one. The number of the N lens arrays, the wavelength division multiplexers, the spherical lenses, the capillary and the output optical fiber is N. The capillary and the output optical fiber are divided into at least two groups, and the number of the lens array, the wavelength division multiplexer, the spherical lens, the capillary and the output optical fiber in each group is the same. At least two groups of components are arranged at different positions in the thickness direction of the substrate. Every four input optical fibers generate four parallel spaced lights that are incident on the lens array. The four spaced lights emitted by the lens array are synthesized into one light through the wavelength division multiplexer. The synthesized light is converged by the spherical lens and then enters the output optical fiber through the capillary for output. The receiving end of the optical module converts the 4N optical path input into N optical path output.

2. The optical module receiving end according to claim 1, characterized in that: When the N lens arrays, the wavelength division multiplexer, the spherical lens, the capillary tube and the output optical fiber are divided into two groups, the two groups of components are arranged on the front and back surfaces of the substrate.

3. The optical module receiving end according to claim 1, characterized in that: Each group of the lens array, the wavelength division multiplexer, the spherical lens and the capillary is located in the same plane.

4. The optical module receiving end according to claim 3, characterized in that: Each group of the lens array, the wavelength division multiplexer, the spherical lens and the capillary are arranged in a row.

5. The optical module receiving end according to claim 1, characterized in that: The receiving end of the optical module also includes a connector, and the 4N input optical fibers are installed on the connector.

6. The optical module receiving end according to claim 1, characterized in that: The capillary is a square capillary.

7. The optical module receiving end according to claim 1, characterized in that: The spherical lens is a C-lens lens.

8. The optical module receiving end according to claim 1, characterized in that: The substrate is made of glass.

9. The optical module receiving end according to claim 1, characterized in that: The lens array, the wavelength division multiplexer, the spherical lens and the capillary are UV-cured on the substrate using epoxy resin glue.

10. The optical module receiving end according to claim 1, characterized in that: The receiving end of the optical module further includes a receiving terminal, the number of the receiving terminals is N, and each of the output optical fibers is connected to a receiving terminal.

Images