CN219065807U - Optical module capable of monitoring and adjusting optical power in real time - Google Patents

Abstract

The utility model provides an optical module capable of monitoring and adjusting optical power in real time. The optical module comprises a heat sink, a laser light source, a lens, an optical fiber and a shell, wherein the heat sink is fixed at one end of the shell, the laser light source is installed on the heat sink, the laser light source and the optical fiber are oppositely arranged, the lens is arranged between the laser light source and the optical fiber, light emitted by the laser light source can be transmitted to the optical fiber through the lens, an adjusting structure for adjusting the laser quantity of the laser light source incident on the lens is further arranged between the laser light source and the lens, and a laser detector is arranged on one side, close to the laser light source, of the adjusting structure. The optical module directly measures the laser power by arranging an adjusting structure with a laser detector between the laser light source and the lens, and moves the adjusting structure to adjust the actual laser power entering the optical fiber on the premise of not adjusting the laser light source power; the optical module is simple in structure and more accurate in monitoring data.

Description

Optical module capable of monitoring and adjusting optical power in real time

Technical Field

The utility model relates to the technical field of optical fiber communication, in particular to an optical module capable of monitoring and adjusting optical power in real time.

Background

The optical module is the most important optical signal interface device in the optical fiber communication system and is also a core component of the laser device. The optical module structure in the prior art mainly comprises a circuit board, a transmitting component arranged on the circuit board and a lens component covered on the light emitting device, wherein the lens component is connected with an optical fiber; the existing optical module adopts reflection and refraction light splitting to monitor parameters of the optical module, but the loss of light beam intensity is easily caused in the process of adopting repeated light path reflection and refraction, light beam distortion is caused, and the accurate detection of a light path is not facilitated.

As in the chinese patent application No. 2011104202969, a photoelectric converter is disclosed for monitoring the state of laser parameters by reflection; as in the chinese patent application No. 2018107660886, an optical module is disclosed that monitors the parameter status of laser light by multiple reflections and refractions. Since the above-mentioned technique does not directly measure the laser power, the monitored laser power is smaller than the actual laser power, and therefore, it is necessary to develop an optical module capable of more accurately monitoring the laser parameter state.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides an optical module capable of monitoring and adjusting optical power in real time.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an optical module that can real-time supervision and adjust light power, includes heat sink, laser light source, lens, optic fibre and casing, the one end at the casing is fixed to the heat sink, the laser light source is installed on the heat sink, laser light source sets up with the optic fibre relatively, is provided with between laser light source and the optic fibre the lens, lens and optic fibre are fixed respectively inside the casing, and the light accessible lens transmission of laser light source emission is to the optic fibre, still be equipped with the regulation structure that is used for adjusting the laser light source incidence to the laser quantity on the lens between laser light source and the lens, one side that regulation structure is close to the laser light source is provided with laser detector.

The laser light source and the optical fiber in the optical module capable of monitoring and adjusting the optical power in real time are oppositely arranged, a lens is arranged between the laser light source and the optical fiber, light rays emitted by the laser light source can be transmitted to the optical fiber through the lens, and the adjustment structure with the laser detector is arranged between the laser light source and the lens, so that the power of laser is directly measured; and meanwhile, the laser quantity of the laser light source entering the optical fiber through the lens is regulated by changing the position of the regulating structure relative to the laser light source, so that the purposes of monitoring and regulating the laser parameters in real time are realized.

Further, the laser light source, the optical axis of the lens and the center of the optical fiber are on the same straight line.

The laser light source, the optical axis of the lens and the center of the optical fiber are kept to be arranged oppositely in sequence, and the main body (most of laser) of the laser beam emitted by the laser light source can be ensured to be transmitted into the optical fiber through the lens on a straight line, so that the energy loss of the laser is reduced to the maximum.

Further, the adjusting structure can slide relative to the shell, and the sliding direction of the adjusting structure relative to the shell is perpendicular to the direction of the straight line where the center of the laser light source, the center of the optical axis of the lens and the center of the optical fiber are located.

The slideable direction of the adjusting structure is perpendicular to the center of the laser source, the center of the optical axis of the lens and the straight line of the center of the optical fiber, so that the adjusting structure can effectively shield part of laser.

Further, the adjusting structure comprises two brackets which are movable relative to the shell, and the two brackets are oppositely arranged and form a channel for the light emitted by the laser light source to pass through; the two brackets are symmetrically distributed at the two sides of a straight line where the center of the laser light source, the center of the optical axis of the lens and the center of the optical fiber are located.

The number of the movable brackets is two, the movable brackets are symmetrically distributed at the center of the laser light source, the center of the optical axis of the lens and the two sides of the straight line where the center of the optical fiber is located, and the distance between the two movable brackets can be reduced through the relative movement of the movable brackets, so that laser is transmitted to the lens and the optical fiber from a channel with a specific size, and the laser quantity entering the optical fiber is controlled more accurately.

Further, the lens is fixed on at least two lens fixing supports connected with the shell, and the lens fixing supports are symmetrically distributed around the lens.

The lens fixing brackets are distributed around the lens, so that the combination of the lens and the shell is tighter, the lens is prevented from moving, and the position is firmer.

Further, the lens is a collimating lens.

The collimating lens can change the light of the point light source into parallel light beams, and the parallel light beams are more beneficial to transmission to the optical fiber and transmit the light beam information out by the optical fiber.

Further, a focusing lens for converging the light transmitted through the collimating lens is arranged between the collimating lens and the optical fiber.

The parallel light passing through the collimating lens can be converged into a stronger light beam by the focusing lens, and the light beam information is transmitted out by means of the optical fiber.

Further, an optical fiber fixing sleeve fixedly connected with the shell is sleeved outside the optical fiber.

Further, the laser detector is electrically connected to the processor, and the laser detector is configured to transmit the detected optical signal to the processor.

The photodetector is an instrument for detecting laser parameters, such as a laser power detector, and can measure the power of the laser light based on the current generated by the laser light impinging on the detector.

Further, the photodetector can detect the power, divergence angle, wavelength and breakdown voltage of ultraviolet and visible light.

Preferably, the photodetector is an avalanche photodiode.

Further, the heat sink is one or a combination of a metal heat sink, a ceramic heat sink or a micro-channel water cooling device.

Further, the laser light source is one of a vertical cavity surface emitting laser, an edge emitting laser and a light emitting diode.

Further, the laser light source is a single point light source or an array of multiple point light sources.

Further, the laser light source and the heat sink are fixedly arranged on the shell through the circuit board.

Further, the shell, the lens fixing support and the optical fiber fixing sleeve are integrally formed by injection molding of injection molding high polymer materials.

Preferably, the injection molding high polymer material is: polyethylene, polypropylene, high density polyethylene, polyvinyl chloride, high impact polystyrene, and polyoxymethylene resin.

Further, the adjusting structure is made of a heat sink material which is light-tight.

The adjusting structure is designed as a heat sink material, so that heat generated by laser irradiating on the adjusting structure can be quickly transferred out while part of laser beams are shielded, the internal temperature of the optical module is kept from continuously rising, and the optical module is ensured to work normally.

Further, the adjusting structure is made of metal heat sink materials.

Preferably, the adjusting structure is made of tungsten copper alloy material.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The optical module provided by the utility model can directly measure the laser parameters emitted by the laser light source in real time, does not need to measure after reflection or refraction light splitting, and has more real and accurate monitored laser parameter data.

(2) The optical module can actively adjust the laser quantity transmitted to the optical fiber by the laser light source of the optical module, and can change the actual laser power entering the optical fiber on the premise of not adjusting the power of the laser light source.

(3) The optical module does not need a lens with a complex shape and an optical transmission structure, has a relatively simple structure, and can save the preparation cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic view of an optical module according to the present utility model.

The reference numerals in the drawings are as follows: 1 is a heat sink; 2 is a laser light source; 3 is an adjusting structure; 4 is a laser detector; 5 is a lens; 6 is a lens fixing bracket; 7 is an optical fiber fixing sleeve; 8 is an optical fiber; 9 is a shell.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

A processor in the present utility model should be understood in a broad sense as a machine having certain software and hardware and capable of acquiring and processing information, not limited to a desktop or notebook computer.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1, an embodiment of the present utility model provides an optical module capable of monitoring and adjusting optical power in real time, including a heat sink 1, a laser light source 2, a lens 5, an optical fiber 8 and a housing 9, where the heat sink 1 is fixed at one end of the housing 9, the laser light source 2 is installed on the heat sink 1, the laser light source 2 is opposite to the optical fiber 8, the lens 5 is disposed between the laser light source 2 and the optical fiber 8, the lens 5 and the optical fiber 8 are respectively fixed inside the housing 9, light emitted by the laser light source 2 can be transmitted to the optical fiber 8 through the lens 5, an adjusting structure 3 for adjusting the amount of laser light incident on the lens 5 by the laser light source 2 is further disposed between the laser light source 2 and the lens 5, and a laser detector 4 is disposed on one side of the adjusting structure 3 close to the laser light source 2.

The laser light source 2 and the optical fiber 8 in the optical module capable of monitoring and adjusting the optical power in real time are oppositely arranged, the lens 5 is arranged between the laser light source 2 and the optical fiber 8, the light emitted by the laser light source 2 can be transmitted to the optical fiber 8 through the lens 5, and the adjustment structure 3 with the laser detector 4 is arranged between the laser light source 2 and the lens 5, so that the power of laser is directly measured; meanwhile, the laser quantity (actual laser power) of the laser light source 2 entering the optical fiber 8 through the lens 5 is regulated by changing the position of the regulating structure 3 relative to the laser light source 2, so that the purposes of monitoring and regulating the laser parameters in real time are realized.

In a specific implementation process, when the optical module works, the laser light source 2 arranged on the heat sink 1 emits laser, as the adjusting structure 3 is arranged between the laser light source 2 and the lens 5, the laser detector 4 is arranged at one end, close to the laser light source 2, of the adjusting structure 3, and can detect information such as power and the like of the laser light source 2 in real time, at the moment, the laser which is not shielded by the adjusting structure 3 is incident into the optical fiber 8 through the lens 5, when the power of the laser light source 2 is not required to be changed to adjust the laser quantity which is incident into the optical fiber 8, only the adjusting structure 3 is required to be moved to partially shield the laser, so that the actual reduction of the laser quantity which is incident into the optical fiber 8 can be realized, and otherwise, the shielding of the laser is removed by the adjusting structure 3, and the actual increase of the laser quantity which is incident into the optical fiber 8 can be realized.

Example 2

Referring to fig. 1, another embodiment of the present utility model provides an optical module capable of monitoring and adjusting optical power in real time, comprising a heat sink 1, a laser light source 2, a lens 5, an optical fiber 8, and a housing 9; the heat sink 1 is fixed at one end of the casing 9, the laser light source 2 and the heat sink 1 are fixedly arranged on the casing 9 through a circuit board, and the laser light source 2 or the heat sink 1 is connected through the circuit board, so that the laser light source 2 can normally supply power and work as the prior art, and the description is omitted in the scheme. The heat sink 1 is a metal heat sink, and according to actual needs, as long as the rapid heat dissipation can be achieved, the material which does not accumulate the energy generated by the laser light source 2 can be used, and a metal heat sink, a ceramic heat sink or a micro-channel water cooling device can also be used; the heat sink 1 is provided with a laser light source 2, the laser light source 2 is a vertical cavity surface emitting laser of a point light source, and other point light sources or laser light sources 2 of an array formed by a plurality of point light sources can also be used as required, for example: edge emitting lasers, four light emitting diodes arranged in square of point light sources, etc. The laser light source 2 is arranged opposite to the optical fiber 8, and a lens 5 is arranged between the laser light source 2 and the optical fiber 8.

In this embodiment, the laser light source 2, the optical axis of the lens 5 and the center of the optical fiber 8 are on the same straight line, so that it is ensured that the main body (most of the laser) of the laser beam emitted by the laser light source 2 is transmitted to the inside of the optical fiber 8 through the lens 5, and the energy loss of the laser is reduced to the maximum. The light emitted by the laser light source 2 can be transmitted to the optical fiber 8 through the lens 5, and an adjusting structure 3 made of opaque metal heat sink material tungsten copper alloy is arranged between the laser light source 2 and the lens 5; the tungsten-copper alloy material is opaque and is a more common metal heat sink material, so that heat generated by laser irradiated on the adjusting structure 3 can be quickly transferred out while part of laser beams are shielded, the internal temperature of the optical module is kept from continuously rising, and the normal operation of the optical module is ensured. Further, the adjusting structure 3 is slidable relative to the housing 9, and the sliding direction of the adjusting structure 3 relative to the housing 9 is perpendicular to the direction of the straight line where the center of the laser light source 2, the center of the optical axis of the lens 5, and the center of the optical fiber 8 are located. The adjusting structure 3 can slide relative to the shell 9, and the sliding direction of the adjusting structure 3 relative to the shell 9 is perpendicular to the direction of the straight line where the center of the laser light source 2, the center of the optical axis of the lens 5 and the center of the optical fiber 8 are positioned; so that the adjusting structure 3 more effectively shields part of the laser; the adjusting structure 3 is provided with a laser detector 4 near one side of the laser light source 2, the laser detector 4 is an avalanche photodiode S3284 produced by Japanese Korea pine, the detectors capable of detecting power, divergence angle, wavelength and breakdown voltage of ultraviolet and visible light can be realized according to actual needs, and the laser detector 4 is electrically connected with a processor and can transmit detected optical signals to the processor.

In this embodiment, the lens 5 and the optical fiber 8 are respectively fixed inside the housing 9, specifically, the lens 5 and the lens fixing support 6 connected with the housing 9 are fixed on the two lens fixing supports 6 and symmetrically distributed around the lens 5, and may be set to be multiple according to actual needs, so long as the lens 5 is distributed around the lens 5 to make the combination of the lens 5 and the housing 9 tighter, thereby the lens 5 does not move, the position is more stable, and the optical fiber 8 is externally sleeved with the optical fiber fixing sleeve 7 fixedly connected with the housing 9. The housing 9, the lens fixing bracket 6 and the optical fiber fixing sleeve 7 are integrally formed by injection molding of polyethylene which is an injection molding high polymer material.

In a specific implementation process, when the optical module works, the laser light source 2 arranged on the heat sink 1 emits laser, and as the adjusting structure 3 made of the opaque heat sink material is arranged between the laser light source 2 and the lens 5, the straight line where the movable direction of the adjusting structure 3 is positioned is perpendicular to the straight line where the center of the laser light source 2, the center of the optical axis of the lens 5 and the center of the optical fiber 8 are positioned, so that the adjusting structure 3 more effectively shields part of the laser; a laser detector 4 is arranged at one end of the adjusting structure 3 close to the laser light source 2, and the laser detector 4 can detect information such as power of the laser light source 2 in real time and transmit the information to a processor electrically connected with the information; because the laser light source 2, the optical axis of the lens 5 and the center of the optical fiber 8 are arranged on a straight line in sequence in a relative manner, the main body (most of laser) of the laser beam emitted by the laser light source 2 is transmitted into the optical fiber 8 through the lens 5, and the energy loss of the laser is saved to the greatest extent; at this time, the laser which is not shielded by the adjusting structure 3 is incident into the optical fiber 8 on the same straight line through the lens 5, when the laser quantity (actual laser power) which is incident into the optical fiber 8 is required to be adjusted without changing the power of the laser light source 2, the laser quantity which is incident into the optical fiber 8 can be actually reduced only by partially shielding the laser by moving the adjusting structure 3, otherwise, the laser quantity which is incident into the optical fiber 8 can be actually increased by removing the shielding of the laser by moving the adjusting structure 3, and when other laser information is required to be changed, the laser light source 2 is required to be adjusted according to the laser parameter information monitored by the laser detector 4, and then the laser parameter information is monitored and adjusted in real time.

Example 3

Referring to fig. 1, another embodiment of the present utility model is a modified embodiment 2, with the following technical features, in which the adjusting structure 3 includes two brackets that are movable relative to the housing 9, and the two brackets are disposed opposite to each other and form a channel for the light emitted by the laser light source 2 to pass through; the two brackets are symmetrically distributed on two sides of a straight line where the center of the laser light source 2, the center of the optical axis of the lens 5 and the center of the optical fiber 8 are located. The number of the movable brackets is two, the movable brackets are symmetrically distributed at the center of the laser light source 2, the center of the optical axis of the lens 5 and the two sides of the straight line where the center of the optical fiber 8 is located, and the distance between the two brackets can be reduced through the relative movement of the movable brackets, so that laser is transmitted to the lens 5 and the optical fiber 8 from a channel with a specific size, and the laser quantity entering the optical fiber 8 is controlled more accurately.

In a specific implementation process, when the amount of laser light incident inside the optical fiber 8 needs to be reduced, the distance between the two movable brackets can be reduced by relatively moving the two movable brackets, that is, the sides of the light detectors 4 of the two movable brackets are close to each other, so that the laser light is transmitted from a smaller gap to the lens 5 and the optical fiber 8, and the amount of laser light incident in the optical fiber 8 is reduced; when the laser quantity incident in the optical fiber 8 needs to be increased, the two movable brackets move away from each other, namely, the sides of the optical detectors 4 of the two movable brackets are away from each other, so that the laser quantity incident in the optical fiber 8 is increased, and the optical module provided by the utility model can control the laser quantity entering the optical fiber 8 more accurately.

Example 4

Referring to fig. 1, another embodiment of the present utility model is based on embodiment 2, with the following technical features, wherein the lens 5 is a collimating lens; a focusing lens for converging the light transmitted through the collimating lens is also arranged between the collimating lens and the optical fiber 8.

In a specific implementation process, the collimating lens can convert the light of the point light source into parallel light beams, so that the laser is conveniently received by the optical fiber 8 on the same straight line with the lens 5, meanwhile, a focusing lens used for converging the light transmitted through the collimating lens is further arranged between the collimating lens and the optical fiber 8, and the parallel light passing through the collimating lens can be converged into stronger light beams by the focusing lens and is transmitted by the optical fiber 8.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, for purposes of preferred embodiments of the present utility model, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various ways without departing from the spirit and scope of the utility model. The embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the present utility model should be made in the equivalent manner and are included in the scope of the present utility model.

Claims (10)

1. The utility model provides an optical module that can real-time supervision and adjust optical power, includes heat sink (1), laser source (2), lens (5), optic fibre (8) and casing (9), a serial communication port, heat sink (1) is fixed in the one end of casing (9), laser source (2) are installed on heat sink (1), laser source (2) set up with optic fibre (8) relatively, be provided with between laser source (2) and optic fibre (8) lens (5), lens (5) and optic fibre (8) are fixed respectively inside casing (9), and the light accessible lens (5) of laser source (2) transmission is to optic fibre (8), still be equipped with between laser source (2) and lens (5) and be used for adjusting laser source (2) incident to regulation structure (3) of the laser quantity on lens (5), one side that regulation structure (3) are close to laser source (2) is provided with laser detector (4).

2. Optical module capable of monitoring and adjusting optical power in real time according to claim 1, characterized in that the laser light source (2), the optical axis of the lens (5) and the centre of the optical fiber (8) are on the same straight line.

3. Optical module capable of monitoring and adjusting optical power in real time according to claim 1, characterized in that the adjusting structure (3) is slidable with respect to the housing (9), the sliding direction of the adjusting structure (3) with respect to the housing (9) being perpendicular to the direction of the line where the center of the laser light source (2), the center of the optical axis of the lens (5) and the center of the optical fiber (8) are located.

4. An optical module capable of monitoring and adjusting optical power in real time according to claim 3, characterized in that said adjusting structure (3) comprises two brackets movable with respect to the housing (9), said brackets being arranged opposite and forming a channel for the passage of the light emitted by the laser source (2); the two brackets are symmetrically distributed at the two sides of a straight line where the center of the laser light source (2), the center of the optical axis of the lens (5) and the center of the optical fiber (8) are located.

5. The optical module capable of monitoring and adjusting optical power in real time according to claim 1, wherein the lens (5) is fixed on at least two lens fixing supports (6) connected with the shell (9), and the fixing supports (6) are symmetrically distributed around the lens (5).

6. Optical module capable of monitoring and adjusting optical power in real time according to claim 1, characterized in that the lens (5) is a collimating lens.

7. The optical module capable of monitoring and adjusting optical power in real time according to claim 6, characterized in that a focusing lens for converging the light transmitted through the collimating lens is further provided between the collimating lens and the optical fiber (8).

8. The optical module capable of monitoring and adjusting optical power in real time according to claim 1, characterized in that the laser detector (4) is electrically connected to a processor, the laser detector (4) being adapted to transmit detected optical signals to the processor.

9. The optical module capable of monitoring and adjusting optical power in real time according to claim 1, wherein the heat sink (1) is one or a combination of a metal heat sink, a ceramic heat sink or a micro-channel water cooling device.

10. The optical module capable of monitoring and adjusting optical power in real time according to claim 1, wherein the laser light source (2) is one of a vertical cavity surface emitting laser, an edge emitting laser, and a light emitting diode.

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