CN119376036A - Laser emitting device for optical communication - Google Patents
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Abstract
本发明涉及一种用于光通信的激光发射装置。该激光发射装置包括：传输光纤，被配置为传输激光束；准直镜，被配置为对激光束进行准直，以获得准直激光束，并且发射准直激光束；以及调节透镜，被配置为在第一位置与第二位置之间进行切换，以改变准直激光束的发散角，第一位置位于传输光纤与准直镜之间的光路径中，第二位置位于光路径之外。本发明能实现对激光束的发散角的调节具有高效性和高稳定性、结构简单、并且成本低的用于光通信的激光发射装置。
The present invention relates to a laser emitting device for optical communication. The laser emitting device comprises: a transmission optical fiber configured to transmit a laser beam; a collimator lens configured to collimate the laser beam to obtain a collimated laser beam and emit the collimated laser beam; and an adjustment lens configured to switch between a first position and a second position to change the divergence angle of the collimated laser beam, wherein the first position is located in the optical path between the transmission optical fiber and the collimator lens, and the second position is located outside the optical path. The present invention can realize a laser emitting device for optical communication with high efficiency and high stability in adjusting the divergence angle of the laser beam, simple structure, and low cost.
Description
Technical Field
Embodiments of the present invention relate to the field of optical communications, and more particularly, to a laser emitting device for optical communications.
Background
In the course of optical communication, if the divergence angle of the laser beam emitted by the laser emitting device for optical communication is changed, optical communication with the corresponding laser receiving device can be efficiently achieved at different stages of optical communication. Generally, in a laser light emitting apparatus, an optical device in the laser light emitting apparatus is precisely moved by providing a moving mechanism, thereby gradually adjusting a divergence angle of an emitted laser beam. However, optics within the laser emitting device need to be accurately aligned and accurately moved to the desired position, small deviations in the movement mechanism (e.g., on the order of microns or less) may each result in large variations in the optical path within the laser emitting device, thereby affecting the stability of the laser emitting device. This results in high performance requirements for the moving mechanism, resulting in high costs, and the moving mechanism requires gradual adjustment of the position of the optics to avoid affecting the stability of the laser emitting device. Furthermore, this approach requires a sensor with high accuracy to detect the position of the moving mechanism to achieve accurate positioning of the position of the optics. Therefore, this approach results in a complicated structure of the laser emitting apparatus, and accurate adjustment of the divergence angle of the laser beam cannot be efficiently and stably achieved.
In summary, the conventional laser emitting apparatus for optical communication has disadvantages in that the adjustment efficiency of the divergence angle of the laser beam is low, the adjustment stability is poor, the structure is complicated, and the cost is high.
Disclosure of Invention
The invention provides a laser emitting device for optical communication, which can realize the adjustment of the divergence angle of a laser beam, has high efficiency and stability, simple structure and low cost.
According to a first aspect of the present invention, there is provided a laser emitting device for optical communication, comprising a transmission optical fiber configured to transmit a laser beam, a collimator mirror configured to collimate the laser beam to obtain a collimated laser beam and emit the collimated laser beam, and an adjustment lens configured to switch between a first position and a second position to change a divergence angle of the collimated laser beam, the first position being located in an optical path between the transmission optical fiber and the collimator mirror, the second position being located outside the optical path.
In some embodiments, the laser emitting device has an expected maximum divergence angle and an expected minimum divergence angle for the collimated laser beam, and the adjustment lens is configured to switch between the first position and the second position such that the divergence angle of the collimated laser beam switches between the expected maximum divergence angle and the expected minimum divergence angle.
In some embodiments, the conditioning lens is configured to be switched to one of the first position and the second position during a link establishment phase of the optical communication such that the collimated laser beam has the expected maximum divergence angle, and the link establishment phase represents a phase in which the laser emitting device scans an optical communication environment with the collimated laser beam to find a corresponding laser receiving device.
In some embodiments, the conditioning lens is configured to be switched to the other of the first position and the second position during a signal transmission phase of the optical communication such that the collimated laser beam has the desired minimum divergence angle, and the signal transmission phase is representative of a phase of signal transmission of the laser emitting device with the laser receiving device.
In some embodiments, the lens parameters of the conditioning lens, and the relative distance of the first position with respect to the transmission fiber and the collimating mirror are determined based on at least one of the expected maximum divergence angle, the expected minimum divergence angle, the beam radius of the laser beam, the collimating mirror parameters of the collimating mirror, or the distance between the transmission fiber and the collimating mirror.
In some embodiments, the lens parameters include at least one of a size of the conditioning lens, a face shape of the conditioning lens, a curvature of the conditioning lens, a material of the conditioning lens, or a coating requirement of the conditioning lens.
In some embodiments, the collimating lens comprises at least one collimating lens and the collimating lens parameter comprises at least one of a size of each of the at least one collimating lens, a material of each of the at least one collimating lens, or a spacing between individual ones of the at least one collimating lens.
In some embodiments, the laser emitting device further comprises a driver configured to drive the adjustment lens to move in a predetermined manner to switch between the first position and the second position, and the predetermined manner comprises a linear movement manner or a rotational movement manner.
In some embodiments, the laser emitting device further comprises a limiting member configured to stop the adjustment lens to prevent the adjustment lens from colliding with other components in the laser emitting device if the adjustment lens is moved to the first position or the second position.
In some embodiments, the accommodating lens comprises at least one of a planar lens, or a curved lens.
It should be appreciated that the present invention has the beneficial effects that by configuring the adjustment lens for switching between the first position and the second position such that the adjustment lens may be located in or out of the optical path of the laser emitting apparatus, adjustment of the divergence angle of the laser beam can be simply, efficiently and accurately achieved, the structure of the laser emitting apparatus is simplified, and the cost of the laser emitting apparatus is reduced.
Drawings
The above and other features, advantages and aspects of embodiments of the present invention will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements.
FIG. 1 illustrates a schematic diagram of an example environment in which an apparatus may be implemented, in accordance with an embodiment of the present invention.
Fig. 2 shows a schematic block diagram of a laser emitting device for optical communication according to an embodiment of the present invention.
Fig. 3 shows a schematic block diagram of a laser emitting device for optical communication according to another embodiment of the present invention.
Fig. 4 shows a schematic block diagram of a laser emitting device for optical communication according to a further embodiment of the present invention.
Fig. 5 shows a schematic view of an adjusting lens of a laser emitting device for optical communication in a first position according to an embodiment of the present invention.
Fig. 6 shows a schematic view of a conditioning lens of a laser emitting device for optical communication in a second position according to an embodiment of the present invention.
Like or corresponding reference characters indicate like or corresponding parts throughout the several views.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are illustrated in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.
As described above, the conventional laser emitting apparatus for optical communication has disadvantages in that the adjustment efficiency of the divergence angle of the laser beam is low, the adjustment stability is poor, the structure is complicated, and the cost is high.
Conventionally, in order to adjust the divergence angle of a laser beam emitted by a laser emitting apparatus for optical communication, in some implementations, a moving mechanism having high accuracy and a high-accuracy sensor are provided in the laser emitting apparatus to adjust the distance between part of lenses in a collimator lens group in the laser emitting apparatus so that the focal length or rear intercept of the collimator lens group is changed, thereby adjusting the divergence angle of the laser beam emitted by the laser emitting apparatus. However, this implementation is extremely prone to damage to the arrangement of the collimating lens group (e.g., mismatch between lenses in the collimating lens group, or collisions, etc.), in addition to the above-described deficiencies.
In other conventional implementations, in the laser emitting device, optical devices such as a movable optical wedge and a static optical wedge which are matched with each other are disposed outside the collimating lens group, and a moving mechanism with high accuracy and a high-accuracy sensor are disposed to move the position of the movable optical wedge to change the optical path of the laser beam in the laser emitting device, thereby adjusting the divergence angle of the laser beam emitted by the laser emitting device. However, in this implementation, there is a disadvantage in that the corresponding planes of the movable and static wedges need to be precisely parallel to each other, and the movable wedge needs to be precisely moved along a movement track corresponding to the parallel planes, so that the arrangement of the movable and static wedges is complicated and high in cost. Furthermore, the relative movement distance between the dynamic and static wedges is limited, so that only small changes in optical path difference can be obtained, resulting in a small adjustment range for the divergence angle. Furthermore, in this implementation, the back intercept of the collimating lens group needs to be greater than the thickness of the dynamic and static wedges, resulting in a larger volume of the laser emitting device.
In addition, in the above various implementation manners, under the condition that the laser emitting device is started again after power failure accidentally, the specific position of the moving mechanism cannot be known due to the loss of the data of the sensor, so that the current divergence angle of the laser emitting device cannot be known, and the laser emitting device cannot work normally.
To at least partially address one or more of the above problems, as well as other potential problems, example embodiments of the present invention provide a laser emitting apparatus for optical communication. In the laser emitting device, the adjusting lens used for switching between the first position and the second position is configured, so that the adjusting lens can be positioned in or out of the optical path of the laser emitting device, the adjustment of the divergence angle of the laser beam can be simply, efficiently and accurately realized, the structure of the laser emitting device is simplified, and the cost of the laser emitting device is reduced.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. FIG. 1 illustrates a schematic diagram of an example environment in which an apparatus may be implemented, in accordance with an embodiment of the present invention. The example environment shown in fig. 1 may be an optical communication environment including a laser light emitting device 100-1, and a plurality of other devices 100-2, 100-3, 100-4 for optical communication, where N is an integer greater than 1. The plurality of other devices 100-2, 100-3, 100-4, and the term "a.v., 100-N may be devices capable of optical communication with the laser emitting device 100-1 as a corresponding laser receiving device.
In a link establishment phase of optical communication, the laser emitting device 100-1 may scan an optical communication environment with its laser beam (e.g., a collimated laser beam) to find other devices 100-2, 100-3, 100-4, or 100-N in the optical communication environment. After the laser emitting device 100-1 scans to the corresponding other device 100-2, 100-3, 100-4, the..the..or 100-N, signal transmission between the two may occur. Therefore, in order to improve the efficiency of finding other devices 100-2, 100-3, 100-4, or 100-N in the optical communication environment during scanning (link establishment), it is desirable that the laser emitting device 100-1 uses a laser beam having a divergence angle as large as possible for scanning. In the signal transmission process, in order to improve the signal transmission quality, it is desirable to use a laser beam having a divergence angle as small as possible for signal transmission.
It should be understood that, although only one laser emitting device 100-1 is shown in the example optical communication environment in fig. 1 and other devices 100-2, 100-3, 100-4, or 100-N are shown as laser receiving devices, in practical applications, additional laser emitting devices and additional laser receiving devices may be present in the optical communication environment, or at least one of the laser emitting devices 100-1 and other devices 100-2, 100-3, 100-4, or 100-N shown in fig. 1 may have a transceiving function at the same time to be used as a laser emitting device or a laser receiving device according to a use scenario.
A laser light emitting device according to an embodiment of the present invention will be described below taking the laser light emitting device 100-1 in fig. 1 as an example. Fig. 2 shows a schematic block diagram of a laser emitting device for optical communication according to an embodiment of the present invention. The laser emitting device shown in fig. 2 may be, for example, the laser emitting device 100-1 in fig. 1 as described above. As shown in fig. 2, the laser emitting device includes a transmission fiber 210, a collimator lens 220, and a conditioning lens 230.
The transmission fiber 210 is configured to transmit a laser beam. For example, the laser beam transmitted by the transmission optical fiber 210 may be a laser beam emitted by a laser source for the laser emitting apparatus. The collimator mirror 220 is configured to collimate the laser beam to obtain a collimated laser beam, and to emit the collimated laser beam. In some embodiments, the collimating lens 220 may include at least one collimating lens that forms a collimating lens group to collimate the laser beam. The adjustment lens 230 is configured to switch between a first position in the optical path between the transmission fiber 210 and the collimator lens 220 and a second position outside the optical path to change the divergence angle of the collimated laser beam. Since the adjusting lens 230 is required to be switched only inside and outside the optical path to achieve switching of different divergence angles, the divergence angle of the laser emitting apparatus can be accurately adjusted, and the adjustment can be achieved with a simple structure and low cost.
In some embodiments, the conditioning lens 230 may comprise a planar lens. In other embodiments, conditioning lens 230 may include a curved lens (e.g., where further precise divergence angle setting is desired). Thereby, the adjusting lens 230 can be realized with a very simple structure, so that the adjusting lens 230 occupies only a small space in the laser emitting device. For example, the diameter of the conditioning lens 230 may be approximately the diameter of the cross section of the transmission fiber 210.
According to the laser emitting device of the embodiment of the invention, the adjusting lens 230 is configured to be switched between the first position and the second position, so that the adjusting lens 230 can be positioned in or out of the optical path of the laser emitting device, thereby simply, efficiently and accurately realizing adjustment of the divergence angle of the laser beam, simplifying the structure of the laser emitting device and reducing the cost of the laser emitting device.
Furthermore, to facilitate switching of the position of the adjustment lens 230, in some embodiments, the laser emitting device according to embodiments of the present invention may further comprise a driver. Fig. 3 shows a schematic block diagram of a laser emitting device for optical communication according to another embodiment of the present invention. The laser emitting apparatus shown in fig. 3 is different from the laser emitting apparatus shown in fig. 2 in that the laser emitting apparatus further includes a driver 310.
The driver 310 may be configured to drive the adjustment lens 230 to move in a predetermined manner to switch between the first position and the second position. In some embodiments, the predetermined manner may include a linear movement manner. In other embodiments, the predetermined manner may include a rotational movement manner.
Here, since the driver 310 only needs to switch the adjustment lens 230 into the optical path of the laser emitting apparatus or out of the optical path, the driver 310 can be implemented using any driving mechanism that is simple in structure and does not need to have high accuracy. For example, the laser emitting apparatus according to the present invention may use the driver 310 having an accuracy of several orders of magnitude lower than the driving mechanism in the conventional laser emitting apparatus described above. Thereby, the laser emitting device structure can be further simplified, and the cost can be further saved.
Because of the simple structure of the driver 310, in some embodiments the driver 310 may be conveniently disposed on the inner or outer wall of the housing of the laser emitting device, or any structure other than the inner and outer walls. In some embodiments, when the driver 310 is disposed on an outer wall of the housing of the laser emitting device or on a structure external to the outer wall, only a small-sized slot need be provided on the housing of the laser emitting device so that a component of the driver 310 or the adjustment lens 230 can move through the slot to effect a position switch of the adjustment lens 230 (as will be further described in the examples below).
In addition, in order to prevent collision with other components in the laser emitting device during the movement of the adjustment lens 230, the laser emitting device according to an embodiment of the present invention may further include a stopper member in some embodiments. Fig. 4 shows a schematic block diagram of a laser emitting device for optical communication according to a further embodiment of the present invention. The laser emitting apparatus shown in fig. 4 is different from the laser emitting apparatus shown in fig. 3 in that the laser emitting apparatus further includes a stopper member 410.
The stopper member 410 may be configured to stop the adjustment lens 230 in the case where the adjustment lens 230 is moved to the first position or the second position, to prevent the adjustment lens 230 from colliding with other components in the laser emitting device. In some embodiments, the limit component 410 may be implemented as a travel switch to deactivate the driver 310 when, for example, a component of the driver 310 contacts the travel switch. Thereby, a more accurate positioning of the adjustment lens 230 can be achieved with lower cost and simple structure without the need for a high-precision sensor in the conventional laser emitting apparatus as described above. This further reduces the cost of the laser emitting device and simplifies the structure of the laser emitting device.
In addition, the above-mentioned limiting member 410 can also enable the adjustment lens 230 to be simply moved to one of the first position and the second position in the case of restarting the laser emitting apparatus after unexpected power failure, without causing the laser emitting apparatus to fail to work normally. For example, when the laser emitting device is restarted, the actuator 310 may be driven to move the adjustment lens 230 in an arbitrary drivable direction, and when the actuator 310 is stopped by contacting the travel switch, it may be determined that the divergence angle of the laser emitting device is switched to the divergence angle corresponding to the first position or the second position (for example, it may be determined by determining whether the travel switch for the first position or the second position is in contact with the actuator). Thus, stable operation of the laser emitting device can be ensured under any condition.
Furthermore, in the embodiments of fig. 2, 3 and 4, the laser emitting device may have an expected maximum divergence angle and an expected minimum divergence angle for the collimated laser beam. In this case, in some embodiments, the adjustment lens 230 may be configured to switch between the first position and the second position such that the divergence angle of the collimated laser beam switches between the desired maximum divergence angle and the desired minimum divergence angle.
In some embodiments, the conditioning lens 230 may be configured to be switched to one of the first position and the second position during a link establishment phase of optical communication such that the collimated laser beam has a desired maximum divergence angle. In some embodiments, as described above, the link establishment phase may represent a phase in which a laser transmitter (e.g., laser transmitter 100-1 of fig. 1) scans an optical communication environment (e.g., the optical communication environment shown in fig. 1) with a collimated laser beam to find a corresponding laser receiver (e.g., other devices 100-2, 100-3, 100-4, or 100-N shown in fig. 1).
In some embodiments, the conditioning lens 230 may be configured to be switched to the other of the first position and the second position during a signal transmission phase of the optical communication such that the collimated laser beam has a desired minimum divergence angle. In some embodiments, as described above, the signaling phase may represent a phase in which a laser emitting device (e.g., laser emitting device 100-1 in fig. 1) is signaled to a laser receiving device (e.g., other devices 100-2, 100-3, 100-4, or 100-N as shown in fig. 1).
An example of switching the adjustment lens 230 between the first position and the second position is described below with reference to fig. 5 and 6. Fig. 5 shows a schematic view of an adjusting lens 230 of a laser emitting device for optical communication in a first position according to an embodiment of the present invention. Fig. 6 shows a schematic view of an adjusting lens 230 of a laser emitting device for optical communication in a second position according to an embodiment of the present invention. In fig. 5 and 6, a dotted arrow is used to indicate the laser beam and the optical path of the laser beam, and the direction of the dotted arrow indicates the transmission direction of the laser beam. Fig. 5 and 6 show the transmission fiber 210, the collimator lens 220, the adjusting lens 230 and the driver 310 of the laser emitting device. The driver 310 is disposed outside of or coupled to the housing H of the laser emitting device, and the housing H has a slot S thereon such that the driver 310 can displace the adjustment lens 230 via the slot S.
In the example schematic shown in fig. 5, the conditioning lens 230 is driven by the driver 310 to a first position in the optical path between the end face D of the transmission fiber 210 and the collimator lens 220. At this time, the laser emitting device may have one of a desired maximum divergence angle and a desired minimum divergence angle according to the setting.
In the example schematic shown in fig. 6, the conditioning lens 230 is driven by the driver 310 to a second position outside the optical path between the end face D of the transmission fiber 210 and the collimator lens 220. At this time, the laser emitting device may have the other one of the expected maximum divergence angle and the expected minimum divergence angle according to the setting. It should be understood that the second position shown in fig. 6 is only an example, and in practical application, the second position may be set to any position other than the optical path indicated by the dashed arrow, for example, the second position may be set inside the housing H.
Further, it should be understood that the arrangement of the driver 310 shown in fig. 5 and 6 is only an example, and the driver 310 may be arranged at any other position where the adjusting lens 230 may be switched inside and outside the optical path. For example, the driver 310 may be provided inside the housing H, and in this case, the housing H does not need to be provided with the slot S shown in fig. 5 and 6. The manner of driving the adjustment lens 230 to perform rotational movement shown in fig. 5 and 6 is also merely an example, and the adjustment lens 230 may be driven in a linear movement manner.
Furthermore, in some embodiments, the lens parameters of the conditioning lens 230, as well as the relative distance of the first position with respect to the transmission fiber 210 (e.g., end face D of the transmission fiber 210) and the collimator lens 220, as described above with respect to fig. 2-6, may be determined based on an expected maximum divergence angle of the laser emitting device. In some embodiments, the lens parameters of the conditioning lens 230, as well as the relative distance of the first position with respect to the transmission fiber 210 and the collimating mirror 220, may be determined based on the expected minimum divergence angle of the laser emitting device. In some embodiments, the lens parameters of the adjustment lens 230, as well as the relative distance of the first position with respect to the transmission fiber 210 and the collimator lens 220, may be determined based on the beam radius of the laser beam transmitted by the transmission fiber 210. In some embodiments, the lens parameters of the adjustment lens 230, and the relative distance of the first position with respect to the transmission fiber 210 and the collimating mirror 220, may be determined based on the collimating mirror parameters of the collimating mirror 220. In some embodiments, the lens parameters of the adjustment lens 230, as well as the relative distance of the first position with respect to the transmission fiber 210 and the collimating mirror 220, may be determined based on the distance between the transmission fiber 210 and the collimating mirror 220.
In some embodiments, adjusting the lens parameters of the lens 230 described above may include adjusting a size (e.g., diameter or thickness, etc.) of the lens 230. In some embodiments, the lens parameters of the adjustment lens 230 may include the surface shape of the adjustment lens 230. In some embodiments, adjusting the lens parameters of the lens 230 described above may include adjusting the curvature of the lens 230. In some embodiments, the above-described lens parameters of the conditioning lens 230 may include the material of the conditioning lens 230. In some embodiments, adjusting the lens parameters of the lens 230 may include adjusting the coating requirements of the lens 230.
In some embodiments, the collimator parameters of the collimator lens 220 may include a size of each of at least one of the collimator lenses 220. In some embodiments, the collimator parameters of the collimator lens 220 may include a material of each of the at least one collimator lens. In some embodiments, the collimator parameters of the collimator lens 220 may include a spacing between each of the at least one collimator lens.
Some examples of the lens parameters of the above-described adjusting lens 230 and the collimator lens parameters of the above-described collimator lens 220 are described below with reference to tables 1 and 2. Table 1 shows collimator parameters of collimator 220. Table 2 shows the collimator parameters of the collimator 220, the lens parameters of the tuning lens 230, and the relative distances of the first position with respect to the transmission fiber 210 and the collimator 220.
TABLE 1
TABLE 2
Table 1 may correspond to the case where the adjustment lens 230 is located at the second position (i.e., out of the optical path) as shown in fig. 6. Table 2 may correspond to the case where the conditioning lens 230 is located in the first position (i.e., in the optical path) as shown in fig. 5. The number 0 in tables 1 and 2 indicates the fiber end face D of the transmission fiber 210. Reference numerals 1 to 4 denote four surfaces of two collimating lenses included in the collimating mirror 220, for example, a first surface (corresponding to reference numeral 1 in tables 1 and 2, which faces the end face D of the transmission optical fiber 210) and a second surface (corresponding to reference numeral 2 in tables 1 and 2, which faces the end face D of the transmission optical fiber 210) of a first collimating lens in the collimating mirror 220, and a third surface (corresponding to reference numeral 3 in tables 1 and 2, which faces the second surface) and a fourth surface (corresponding to reference numeral 4 in tables 1 and 2, which faces the second surface) of a second collimating lens in the collimating mirror 220, respectively.
The radius of curvature, thickness, spacing between the collimating lenses, and material of the collimating lenses of the collimating lens 220 are shown in table 1. In table 1, the curvature of the end face D (number 0) of the transmission fiber 210 is infinite, that is, the end face D is a plane. At a distance of 20.00 mm from the end face D in the transmission direction of the laser beam, there is a first surface of the first collimating lens of the collimating mirror 220, the curvature of which is infinite, i.e. the first surface is planar, and the material of which is fused silica. Along the transmission direction of the laser beam, at a distance of 3.00 mm from the first surface, there is a second surface of the first collimating lens of the collimating mirror 220, the curvature of which is 7.83, i.e. the second surface is curved. At a distance of 1.89 mm from the second surface in the transmission direction of the laser beam, there is a third surface of the second collimating lens of the collimating mirror 220, the curvature of which is 11.99, i.e., the third surface is curved, and the material of the second collimating lens is fused silica. Along the transmission direction of the laser beam, at a distance of 2.80 mm from the third surface, there is a fourth surface of the second collimating lens of the collimating mirror 220, the curvature of which is-10.02, i.e. the fourth surface is curved. Along the transmission direction of the laser beam, at a distance of 5.00 mm from the fourth surface, there is a virtual image plane of the laser emitting device.
Table 2 differs from table 1 in that there are also a fifth surface denoted by a reference numeral 5 and a sixth surface denoted by a reference numeral 6, which are both surfaces of the conditioning lens 230. The fifth surface is located at a distance of 10.00 mm from the end face D of the transmission fiber 210 in the transmission direction of the laser beam, the curvature of the fifth surface is infinite, that is, the fifth surface is a plane, and the material of the conditioning lens 230 is fused silica. The sixth surface is located at a distance of 2.5 mm from the fifth surface in the transmission direction of the laser beam, i.e., the thickness of the adjustment lens 230 is 2.5 mm. The curvature of the sixth surface is infinite, i.e. the sixth surface is planar. There is a first surface of a first collimating lens of the collimating mirror 220 at a distance of 7.5 mm from the sixth surface, followed by second to fourth surfaces, along the transmission direction of the laser beam.
In the examples of tables 1 and 2, the laser emitting device can achieve a minimum divergence angle of 4.4mrad (milliradian) and a maximum divergence angle of 434 μrad (micro radian). The laser emitting device can realize divergence angle switching of up to 10 times.
It should be understood that the above is only an example of the number of lenses and related parameters of the collimator lens 220 and the adjusting lens 230 and the first position. In practical applications, the number of lenses and the related parameters of the collimator lens 220 and the adjusting lens 230 and the first position may be set to be different from those in tables 1 and 2, and parameters not shown in tables 1 and 2 may also be included to achieve a higher or lower order of divergence angle switching than the above-described examples.
The various processes and treatments described above may be performed at a computing device. The computing device includes, for example, at least one processor (at least one graphics processor and at least one central processing unit), and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor. In some embodiments, the method may be implemented as a computer software program or program product tangibly embodied on a machine-readable medium. In some embodiments, part or all of the computer program may be loaded and/or installed onto the computing device via Read-Only Memory (ROM) and/or a communication unit. One or more of the acts of the methods described above may be performed when a computer program is loaded into Random-access memory (RAM) and executed by a GPU and a CPU.
The present invention may be a method, apparatus, system, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for performing various aspects of the present invention. The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. Various aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer readable program instructions may be provided to a central processing unit of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the central processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution disclosed in the present application can be achieved, and are not limited herein.
The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors.
Claims (10)
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| CN202411920424.XA CN119376036A (en) | 2024-12-24 | 2024-12-24 | Laser emitting device for optical communication |
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