High repetition frequency light source simulation device
By designing a high-frequency light source simulation device including multiple fiber lasers and fiber receivers, the problem of difficult to realize the full fiber structure and fiber coupling loss in the prior art is solved, and efficient high-frequency light source simulation and accurate simulation testing are achieved.
Patent Information
- Application Number
- CN202421381178.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The prior art is difficult to realize the simulation of high-frequency light source for all-fiber structures, especially in the generation of high-frequency pulses at the 100 GHz level, there is a problem of complex production of silicon-based micro-ring resonators and large fiber coupling loss.
A high-frequency light source simulation device is designed, including a light box, an optical inlet, an optical outlet, an optical path channel, an optical fiber laser and an optical fiber receiver. Through multiple optical fiber lasers, laser light sources of different frequencies and wavelengths are emitted, and directly coupled to the optical fiber receiver, realizing the simulation of a high-frequency light source with an all-fiber structure.
The full fiber structure simulation test of high-frequency light sources is realized, which reduces the fiber coupling loss, simplifies the device structure, and improves the accuracy of simulation tests.
Smart Images
Figure CN222599119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a high repetition rate light source simulation device, belonging to the technical field of lasers. Background Art
[0002] High repetition rate pulsed fiber lasers have attracted much attention due to their important applications in optical fields such as nonlinear optics, optical frequency combs, and optical communications. Both actively mode-locked lasers and passively mode-locked lasers can obtain high repetition rate pulses, but since actively mode-locked lasers require the use of modulators, the structure is complex and limited by the electronic bandwidth, many methods that can generate high repetition rate pulses are based on passively mode-locked lasers. In passively mode-locked lasers, the methods for generating high repetition rate pulses can be divided into three categories: the first category is to increase the pulse repetition rate by shortening the cavity length, that is, the short cavity method; the second category is to generate high repetition rate pulses through harmonic mode locking; the third category is to generate high repetition rate pulses using four-wave mixing. Usually, the short cavity method and harmonic mode locking can only obtain high repetition rate pulses of tens of GHz. To obtain high repetition rate pulses of hundreds of GHz level, the filter-induced four-wave mixing method is currently used. However, the silicon-based microring resonator is connected to the fiber laser to obtain high repetition rate pulses of hundreds of GHz level through the filter-induced four-wave mixing effect. However, the manufacturing process of the silicon-based microring resonator is complicated and the fiber coupling loss is large, and an all-fiber structure cannot be achieved. Utility Model Content
[0003] In view of this, the purpose of the present invention is to provide a high repetition rate light source simulation device to solve the technical problems mentioned in the prior art.
[0004] A high repetition rate light source simulation device comprises a light box, the interior of the light box is a hollow structure, the cross section of the light box is a fan-shaped structure, a large end side of the light box is provided with a plurality of light inlets, a small end side of the light box is provided with a light outlet, and the center lines of the plurality of light inlets intersect at a point and are located on the center line of the light outlet;
[0005] A light path channel is extended from one side of each light inlet of the light box close to the light outlet;
[0006] A fiber laser is installed at each of the light inlets to emit a laser light source;
[0007] An optical fiber receiver is installed at the light outlet, and the optical fiber receiver is used to receive the laser light source emitted by each optical fiber laser.
[0008] Optionally, a side of a plurality of the optical path channels close to the light outlet is an arc-shaped surface, the inner concave side of the arc-shaped surface faces the light outlet, a light shielding plate is installed on the arc-shaped surface, and is used to form an optical coupling chamber on one side of the light outlet, and an anti-reflection coating is provided on the surface of the optical coupling chamber;
[0009] The shading plate is provided with a light-through hole on the center line of each of the light entrances.
[0010] Optionally, an optical amplifier is installed in the light-through hole.
[0011] Optionally, the fiber laser is a continuous fiber laser or a pulsed fiber laser.
[0012] Optionally, the aperture size of the optical path channel decreases sequentially along a side of the light inlet toward the light outlet.
[0013] Optionally, an anti-reflection coating is provided on the side wall of the optical path channel.
[0014] The beneficial effects that the utility model can produce include:
[0015] The utility model provides a high repetition rate light source simulation device, which emits laser light sources of different frequencies and wavelengths through multiple fiber lasers and couples them to a fiber receiver, so that the fiber receiver directly obtains high repetition rate pulses of different levels, reduces the fiber coupling loss, and thus realizes the full fiber structure simulation test of the high repetition rate light source. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of a high repetition rate light source simulation device of the utility model;
[0017] In the figure: 1. light box, 2. light inlet, 3. light outlet, 4. optical path, 5. fiber laser, 6. fiber receiver, 7. optical amplifier, 8. light shielding plate, 9. light hole, 10. optical coupling chamber. DETAILED DESCRIPTION
[0018] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.
[0019] like Figure 1As shown, the utility model provides a high repetition rate light source simulation device, including a light box 1, the interior of the light box 1 is a hollow structure, the cross section of the light box 1 is a fan-shaped structure, a plurality of light inlets 2 are arranged on one side of the large end of the light box 1, a light outlet 3 is arranged on one side of the small end of the light box 1, and the center lines of the plurality of light inlets 2 intersect at one point and are located on the center line of the light outlet 3; an optical path channel 4 is extended and arranged on one side of each light inlet 2 of the light box 1 close to the light outlet 3; a fiber laser 5 is fixedly installed at each light inlet 2 for emitting a laser light source; a fiber receiver 6 is fixedly installed at the light outlet 3, and the fiber receiver 6 is used to receive the laser light source emitted by each fiber laser 5. In the above, laser light sources of different frequencies and wavelengths are emitted by multiple fiber lasers 5 and coupled to the fiber receiver 6, so that the fiber receiver 6 directly obtains high repetition rate pulses of different levels, reduces the fiber coupling loss, and thus realizes the full fiber structure simulation test of the high repetition rate light source.
[0020] Furthermore, the side of several optical path channels 4 close to the light outlet 3 is an arc surface, the inner concave side of the arc surface faces the light outlet 3, and a light shielding plate 8 is fixedly installed on the arc surface, which is used to form an optical coupling chamber 10 on one side of the light outlet 3. The surface of the optical coupling chamber 10 is provided with an anti-reflection coating, which can reduce the diffuse reflection interference of multiple laser light sources and improve the accuracy of the optical coupling simulation test; the light shielding plate 8 is located on the center line of each light inlet 2 and is provided with a light through hole 9, so that the laser light source directly irradiates the optical fiber receiver 6, reducing the optical fiber transmission loss. In the above, an optical amplifier 7, such as a semiconductor optical amplifier 7 (SOA), is fixedly installed in the light through hole 9, which can further reduce the optical fiber coupling loss.
[0021] In the above-mentioned embodiment, the fiber laser 5 is a continuous fiber laser 5 or a pulse fiber laser 5, such as a LY4010A series fiber laser 5. The emitting end of the fiber laser 5 is installed in the light inlet 2, and the frequency and wavelength of the laser light source emitted by each fiber laser 5 are set to be different to provide laser light sources with different frequencies and wavelengths.
[0022] In the above, the aperture size of the optical path channel 4 decreases gradually from the light inlet 2 to the light outlet 3, which helps to reduce the diffusion of the laser light source in the optical path channel 4, thereby reducing the transmission loss of the optical fiber; and an anti-reflection coating is applied on the side wall of the optical path channel 4 to avoid the generation of stray light, thereby further improving the accuracy of the optical coupling simulation test.
[0023] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.
Claims
1. A high repetition rate light source simulation device, characterized in that: The light box (1) comprises a light box (1), the interior of the light box (1) is a hollow structure, the cross section of the light box (1) is a fan-shaped structure, a large end of the light box (1) is provided with a plurality of light inlets (2), a small end of the light box (1) is provided with a light outlet (3), and the center lines of the plurality of light inlets (2) intersect at a point and are located on the center line of the light outlet (3); A light path channel (4) is provided extending from one side of each light inlet (2) of the light box (1) close to the light outlet (3); Each of the light inlets (2) is equipped with a fiber laser (5) for emitting a laser light source; An optical fiber receiver (6) is installed at the light outlet (3), and the optical fiber receiver (6) is used to receive the laser light source emitted by each optical fiber laser (5).
2. A high repetition rate light source simulation device according to claim 1, characterized in that: A side of a plurality of the optical path channels (4) close to the light outlet (3) is an arc-shaped surface, the inner concave side of the arc-shaped surface faces the light outlet (3), a light shielding plate (8) is installed on the arc-shaped surface, and is used to form an optical coupling chamber on one side of the light outlet (3), and an anti-reflection coating is arranged on the surface of the optical coupling chamber; The shading plate (8) is provided with a light-through hole (9) located on the center line of each of the light inlets (2).
3. A high repetition rate light source simulation device according to claim 2, characterized in that: An optical amplifier (7) is installed in the light-through hole (9).
4. The high repetition rate light source simulation device according to claim 1, characterized in that: The optical fiber laser (5) is a continuous optical fiber laser (5) or a pulsed optical fiber laser (5).
5. The high repetition rate light source simulation device according to claim 1, characterized in that: The aperture size of the optical path channel (4) decreases sequentially along a side from the light inlet (2) toward the light outlet (3).
6. The high repetition rate light source simulation device according to claim 1, characterized in that: An anti-reflection coating is provided on the side wall of the optical path channel (4).