Single-core dual-channel laser

Abstract

The utility model provides a single-core double-channel laser, which comprises a first sleeve, one end of the first sleeve is provided with a second sleeve in a threaded connection mode through threads, and a resin sealing ring is arranged at the connection position of the first sleeve and the second sleeve. Hybrid integrated packaging is adopted, light splitting elements such as a laser chip and an optical splitter are integrated in the same standard packaging tube shell, the optical power of the same light source is distributed by optimally designing a first collimating lens and a second collimating lens under the condition that the design of the current packaging tube shell is not changed, accessories of the laser are reduced, and the cost is reduced. The practicability of the laser is improved; the double-core optical fiber head can be conveniently replaced by the multi-core optical fiber head by dismounting the second sleeve, so that multi-channel output is realized; and the second sleeve can be positioned through the arranged insertion plate, the bulge and the groove, and resin is poured between the first sleeve and the second sleeve, so that the sealing performance of the laser can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single-core dual-channel lasers, in particular to a single-core dual-channel laser. Background Art

[0002] A laser is a device that emits laser light and is commonly used in fields such as optical fiber communication, laser ranging, and lidar.

[0003] Currently, the segmentation and extraction of laser power signals generally use fiber optic splitters and complex spatial spectrometry processing. The former is a passive optical splitter connected to the laser, which uses a large-sized spectrometer component. The latter is a redesign of the laser's packaging shell and the addition of a spatial spectrometer component inside the packaging shell. The manufacturing process is complex and requires a customized shell, which increases the cost of the laser and reduces the practicality of the laser.

[0004] To this end, the utility model provides a single-core dual-channel laser. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a single-core dual-channel laser to solve the problems raised in the above-mentioned background technology. The present invention adopts a hybrid integrated package to integrate the laser chip and the splitter element in the same standard package tube shell. Without changing the current package tube shell design, the optical power of the same light source is distributed by optimizing the design of the first collimating lens and the second collimating lens, thereby improving the practicality of the laser.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solution: a single-core dual-channel laser, comprising a first sleeve, one end of the first sleeve is screwed with a second sleeve by a threaded connection, a resin sealing ring is provided at the connection position of the first sleeve and the second sleeve, a dual-core optical fiber head is fixedly installed at the inner center position of the second sleeve, a laser chip is fixedly installed inside one end of the first sleeve, and a first collimating lens, an optical splitter and a second collimating lens are coupled and installed between the laser chip and the dual-core optical fiber head from left to right in sequence, and the first collimating lens, the optical splitter and the second collimating lens are all fixedly arranged inside the first sleeve.

[0007] Furthermore, a pin is fixedly provided on one side of the laser chip, and one end of the pin passes through the first sleeve and is provided on the outside of the first sleeve.

[0008] Furthermore, a plug-in tube is fixedly provided at the other end of the first sleeve, and the thread is provided on the outer wall of the plug-in tube.

[0009] Furthermore, an internal thread is provided inside one end of the second sleeve, and the internal thread and the thread are screwed together.

[0010] Furthermore, plug-ins are symmetrically fixedly provided on both sides of the top and bottom of the second sleeve corresponding to the dual-core optical fiber head, and protrusions are symmetrically fixedly provided on the top and bottom of the plug-in plates.

[0011] Furthermore, a groove is provided on the inside of the plug-in tube at a position corresponding to the protrusion, and the protrusion is snap-fitted into the inside of the groove.

[0012] Furthermore, a fixing sleeve is fixedly provided inside the first sleeve, and a first shielding layer is fixedly provided between the fixing sleeve and the laser chip, the first collimating lens, the optical splitter and the second collimating lens.

[0013] Furthermore, a second shielding layer is fixedly provided on the inner side of the plug board corresponding to the outer side of the dual-core optical fiber head, and one end of the first shielding layer and the second shielding layer are in contact with each other.

[0014] The beneficial effects of the present invention are as follows: the present invention is a single-core dual-channel laser that adopts a hybrid integrated package, and integrates the laser chip and optical splitter and other splitting elements in the same standard package tube shell. Without changing the current package tube shell design, the optical power of the same light source is distributed by optimizing the design of the first collimating lens and the second collimating lens, thereby reducing the accessories of the laser and improving the practicality of the laser; by disassembling the second sleeve, the dual-core optical fiber head can be easily replaced with a multi-core optical fiber head, thereby realizing multi-channel output; the second sleeve can be positioned by the provided plug-in plate, protrusion and groove, and resin can be poured between the first sleeve and the second sleeve to improve the sealing of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a single-core dual-channel laser of the utility model;

[0016] Figure 2 This is a front cross-sectional view of a single-core dual-channel laser of the utility model;

[0017] Figure 3 This is a structural diagram of the first and second sleeves of a single-core dual-channel laser of the utility model;

[0018] In the figure: 1. First sleeve; 2. Second sleeve; 3. Resin sealing ring; 4. Dual-core optical fiber head; 5. Laser chip; 6. Pin; 7. First collimating lens; 8. Optical splitter; 9. Second collimating lens; 10. Fixing sleeve; 11. First shielding layer; 12. Insert plate; 13. Second shielding layer; 14. Thread. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figures 1 to 3 The utility model provides a technical solution: a single-core dual-channel laser, comprising a first sleeve 1, one end of the first sleeve 1 is screwed with a second sleeve 2 through a thread 14, a resin sealing ring 3 is provided at the connection position between the first sleeve 1 and the second sleeve 2, a dual-core optical fiber head 4 is fixedly installed at the inner center position of the second sleeve 2, a laser chip 5 is fixedly installed inside one end of the first sleeve 1, a first collimating lens 7, an optical splitter 8 and a second collimating lens 9 are coupled and installed between the laser chip 5 and the dual-core optical fiber head 4 from left to right, the first collimating lens 7, the optical splitter 8 and the second collimating lens 9 are all fixedly arranged inside the first sleeve 1, and a hybrid integrated package is adopted to integrate the laser chip 5 and the optical splitter 8 and other splitting elements in the same standard package shell. Without changing the current package shell design, the optical power of the same light source is distributed by optimizing the design of the first collimating lens 7 and the second collimating lens 9, thereby reducing the accessories of the laser, thereby improving the practicality of the laser.

[0021] In this embodiment, a pin 6 is fixedly provided on one side of the laser chip 5. One end of the pin 6 passes through the first sleeve 1 and is provided on the outside of the first sleeve 1. The provided pin 6 facilitates welding and fixing the laser to the circuit board.

[0022] In this embodiment, a plug-in tube is fixedly provided at the other end of the first sleeve 1, and the thread 14 is provided on the outer wall of the plug-in tube. An internal thread is provided inside one end of the second sleeve 2, and the internal thread and the thread 14 are screwed together. An inserting plate 12 is symmetrically fixed on both sides of the top and bottom of the second sleeve 2 corresponding to the dual-core optical fiber head 4. The top and bottom of the inserting plate 12 are symmetrically fixed with protrusions. A groove is provided on the inside of the plug-in tube at the position corresponding to the protrusion. The protrusion is clamped inside the groove. The screw connection between the thread 14 and the internal thread facilitates the connection between the first sleeve 1 and the second sleeve 2, and the protrusion can be stuck in the groove under the elastic force of the inserting plate 12, which facilitates the fixation of the second sleeve 2, thereby improving the stability of the second sleeve 2.

[0023] In this embodiment, a fixing sleeve 10 is fixedly provided inside the first sleeve 1, and a first shielding layer 11 is fixedly provided between the fixing sleeve 10 and the laser chip 5, the first collimating lens 7, the optical splitter 8 and the second collimating lens 9. A second shielding layer 13 is fixedly provided on the inner side of the plug-in plate 12 corresponding to the outer side of the dual-core optical fiber head 4. One ends of the first shielding layer 11 and the second shielding layer 13 are in contact with each other. The first shielding layer 11 and the second shielding layer 13 can shield the outer sides of the laser chip 5, the first collimating lens 7, the optical splitter 8, the second collimating lens 9 and the dual-core optical fiber head 4 to reduce external interference. The first shielding layer 11 can be reinforced by the setting of the fixing sleeve 10.

[0024] When using the single-core dual-channel laser, the laser chip 5, the first collimating lens 7, the optical splitter 8 and the second collimating lens 9 are sequentially installed inside the first sleeve 1 through a coupling process. The second sleeve 2 is installed on the outside of the plug-in tube through the screw connection of the internal thread and the thread 14. The plug-in tube can squeeze the protrusion so that the plug-in plate 12 can bend and deform inward. The plug-in plate 12 is an arc-shaped elastic plate. After the protrusion moves to the groove position, it can be stuck in the inside of the groove under the elastic force of the plug-in plate 12, which is convenient for limiting the second sleeve 2, thereby improving the stability of the second sleeve 2. Resin is poured at the connection between the first sleeve 1 and the second sleeve 2, and the resin will The laser is sealed by a hybrid integrated package, and the laser chip 5 and the optical splitter 8 and other light splitting elements are integrated in the same standard package shell. Without changing the current package shell design, the optical power of the same light source is distributed by optimizing the design of the first collimating lens 7 and the second collimating lens 9, which reduces the accessories of the laser and improves the practicality of the laser. The resin is melted to disassemble the second sleeve 2. By disassembling the second sleeve 2, the dual-core optical fiber head 4 can be easily replaced with a multi-core optical fiber head, thereby realizing multi-channel output.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A single-core dual-channel laser, comprising a first sleeve (1), characterized in that: One end of the first sleeve (1) is threadedly connected to a second sleeve (2) via a thread (14); a resin sealing ring (3) is provided at the connection position between the first sleeve (1) and the second sleeve (2); a dual-core optical fiber head (4) is fixedly installed at the inner center position of the second sleeve (2); a laser chip (5) is fixedly installed inside one end of the first sleeve (1); a first collimating lens (7), an optical splitter (8) and a second collimating lens (9) are coupled and installed between the laser chip (5) and the dual-core optical fiber head (4) from left to right in sequence; the first collimating lens (7), the optical splitter (8) and the second collimating lens (9) are all fixedly arranged inside the first sleeve (1).

2. The single-core dual-channel laser according to claim 1, characterized in that: A pin (6) is fixedly provided on one side of the laser chip (5), and one end of the pin (6) passes through the first sleeve (1) and is provided on the outside of the first sleeve (1).

3. The single-core dual-channel laser according to claim 1, characterized in that: The other end of the first sleeve (1) is fixedly provided with an inserting tube, and the thread (14) is provided on the outer wall of the inserting tube.

4. The single-core dual-channel laser according to claim 3, characterized in that: An internal thread is provided inside one end of the second sleeve (2), and the internal thread and the thread (14) are threadedly connected to each other.

5. The single-core dual-channel laser according to claim 4, characterized in that: Insertion plates (12) are symmetrically fixedly provided on both sides of the top and bottom of the second sleeve (2) corresponding to the dual-core optical fiber head (4), and protrusions are symmetrically fixedly provided on the top and bottom of the insertion plates (12).

6. The single-core dual-channel laser according to claim 5, characterized in that: A groove is provided on the inside of the plug tube at a position corresponding to the protrusion, and the protrusion is clamped and arranged inside the groove.

7. The single-core dual-channel laser according to claim 6, characterized in that: A fixing sleeve (10) is fixedly provided inside the first sleeve (1), and a first shielding layer (11) is fixedly provided between the fixing sleeve (10), the laser chip (5), the first collimating lens (7), the optical splitter (8), and the second collimating lens (9).

8. The single-core dual-channel laser according to claim 7, characterized in that: A second shielding layer (13) is fixedly provided on the inner side of the plug board (12) corresponding to the outer side of the dual-core optical fiber head (4), and one end of the first shielding layer (11) and the second shielding layer (13) are in contact with each other.

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