A light emitting component and a light emitting method

Abstract

This invention relates to the field of optical communication technology, and in particular to an optical emitting component and an optical emitting method. The optical emitting component proposed in this invention allows two lasers to share a single isolator, eliminating the need for an isolator and thus reducing the installation size of the optical emitting component and lowering the production cost of high-speed optical modules. Simultaneously, by incidenting the light emitted by the lasers onto the isolator surface at a certain angle, the isolator can be manufactured at a 0° angle. Since the optical path itself already has an angle, the isolator can be manufactured without an angle, further reducing the difficulty of isolator production and thus further reducing the production cost of high-speed optical modules.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and in particular to an optical emitting component and an optical emitting method. Background Technology

[0002] In existing high-speed optical modules, the main optical path is designed with one laser corresponding to one isolator. For conventional Electroabsorption Modulated Laser (EML) solutions in 400G / 800G / 1.6T optical modules, the number of lasers used is 4 / 8 / 8 respectively, corresponding to 4 / 8 / 8 isolators, arrayed in front of the lasers. For high-speed optical modules using silicon photonics solutions, if the optical path adopts a 1-to-2 splitter configuration, such as... Figure 1 As shown, for the 400G DR (Datacenter Reach) 4 product, 2 lasers are required, so 2 isolators are needed; for the 800G DR8 product, 4 lasers are required, so 4 isolators are needed.

[0003] In summary, whether it is a high-speed optical module based on EML or silicon photonics, the isolators and lasers used are in a one-to-one correspondence. However, the isolators are expensive, which leads to a higher material cost for high-speed optical modules.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Summary of the Invention

[0005] The technical problem to be solved by this invention is how to reduce the number of isolators in high-speed optical modules to save on the production cost of high-speed optical modules.

[0006] The present invention adopts the following technical solution:

[0007] In a first aspect, an optical emitting component is provided, comprising: a first laser, a second laser, a first lens, a second lens, and an isolator; the first laser and the first lens are coupled sequentially along an optical path, and the second laser and the second lens are coupled sequentially along an optical path; the first laser is used to emit a first optical signal at a first preset angle, the first lens is used to transmit the first optical signal to the isolator, and the isolator is used to converge the first optical signal into a first waveguide;

[0008] The second laser is used to emit a second optical signal at a second preset angle, the second lens is used to transmit the second optical signal to the isolator, and the isolator is also used to converge the second optical signal into the second waveguide;

[0009] The isolator is located at the intersection of the first optical signal and the second optical signal.

[0010] Preferably, the optical surface of the isolator facing the first laser and the second laser is the light-incident surface, and the optical surface of the isolator away from the first laser and the second laser is the light-exit surface. A first anti-reflection film is deposited on both the light-incident surface and the light-exit surface corresponding to the first optical signal; a second anti-reflection film is deposited on both the light-incident surface and the light-exit surface corresponding to the second optical signal.

[0011] Preferably, the isolator includes a first medium, a second medium having a preset width is disposed in the first medium, the second medium and the bottom surface of the first medium have a preset angle, and the second medium is disposed on the propagation path of the second optical signal;

[0012] In the isolator, the transmission path of the second optical signal passes sequentially through the first medium, the second medium, and the first medium before being emitted from the light-emitting surface of the isolator;

[0013] The transmission path of the first optical signal passes through the first medium and is emitted from the light-emitting surface of the isolator, so that the optical axes of the first optical signal and the second optical signal obtained after transmission through the isolator remain symmetrical.

[0014] Preferably, the preset angle between the second medium and the preset width are determined based on the wavelength of the first optical signal, the wavelength of the second optical signal, the refractive index of the first optical signal in the first medium, the refractive index of the first optical signal in the second medium, and the refractive index of the second optical signal in the first medium.

[0015] Preferably, the first medium is yttrium iron garnet and the second medium is air.

[0016] Preferably, the optical emitting component further includes a first converging lens, which is disposed between the isolator and the first waveguide and the second waveguide;

[0017] The first converging lens is used to converge the first optical signal into the first waveguide, and the first converging lens is also used to converge the second optical signal into the second waveguide.

[0018] Preferably, the optical emitting component further includes a second converging lens and a third converging lens; the second converging lens is disposed on the transmission optical path between the isolator and the first waveguide, and the third converging lens is disposed on the transmission optical path between the isolator and the second waveguide;

[0019] The second converging lens is used to adjust the incident angle of the first optical signal after passing through the isolator onto the first waveguide;

[0020] The third converging lens is used to adjust the incident angle of the second optical signal after passing through the isolator onto the first waveguide.

[0021] Preferably, the wavelengths of the first optical signal and the second optical signal are 1271nm, 1291nm, 1311nm or 1331nm.

[0022] Preferably, the isolator is a tilt-free isolator.

[0023] In a second aspect, a light emission method is provided, the method being applicable to the light emission assembly as described in the first aspect, comprising:

[0024] The first laser emits a first optical signal at a first preset angle, the first lens transmits the first optical signal to the isolator, and the isolator transmits the first optical signal into the first waveguide;

[0025] The second laser emits a second optical signal at a second preset angle, the second lens transmits the second optical signal to the isolator, and the isolator also transmits the second optical signal into the second waveguide.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The two lasers in the optical emitting component of the high-speed optical module proposed in this invention can share a single isolator, eliminating the need for an isolator, thereby reducing the installation size of the optical emitting component and lowering the production cost of the high-speed optical module.

[0028] Furthermore, by incidenting the light emitted by the laser onto the surface of the isolator at a certain angle, the isolator can be manufactured at a 0° angle. Since the optical path itself already has an angle, the isolator can be manufactured without an angle, which can further reduce the difficulty of isolator production and thus further reduce the production cost of high-speed optical modules. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1This is a schematic diagram of an existing structure of an optical emitting component provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a light emitting component provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of an antireflection film on an isolator of a light emitting component provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of an isolator provided in an embodiment of the present invention;

[0034] Figure 5 This is another structural schematic diagram of an isolator provided in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of another structure of an optical emitting component provided in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of a specific structure of an optical emitting component provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the vertical mounting tolerance curves of a dual-lens and a single-lens optical emitting component provided in an embodiment of the present invention.

[0038] Figure 9 This is a schematic diagram of the optical axis mounting tolerance curves of a dual-lens and a single-lens optical emitting component provided in an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the structure of a high-speed optical module provided in an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of a light emission method provided in an embodiment of the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as openly inclusive, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples; that is, although they may be incorporated into embodiments or examples using the above terms for reasons such as order and position, it does not limit them to be incorporated in combination by a single embodiment or example.

[0043] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more. Furthermore, for example, the description may use the prefix "A" or "B" to describe the same type of nouns as two independent entities. In this case, the corresponding features defined with "A" and "B" are used only to distinguish between similar entities and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0044] In describing some embodiments, the terms "coupled," "coupled," and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other, such as "optical coupling," "wireless connection," etc. The embodiments disclosed herein are not necessarily limited to the scope of this invention.

[0045] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Example 1:

[0047] Embodiment 1 of the present invention provides a light emitting component, such as... Figure 2As shown, it includes: a first laser, a second laser, a first lens, a second lens, and an isolator; the first laser and the first lens are coupled sequentially along the optical path, and the second laser and the second lens are coupled sequentially along the optical path; the first laser is used to emit a first optical signal at a first preset angle, the first lens is used to transmit the first optical signal to the isolator, and the isolator is used to converge the first optical signal into a first waveguide; the second laser is used to emit a second optical signal at a second preset angle, the second lens is used to transmit the second optical signal to the isolator, and the isolator is also used to converge the second optical signal into a second waveguide; wherein, the isolator is disposed at the intersection of the first optical signal and the second optical signal.

[0048] In the optical emitting assembly, the lasers in the laser module typically appear in pairs; therefore, in this embodiment, two lasers will be specifically described. In one embodiment, the wavelengths of the first optical signal and the second optical signal are 1271nm, 1291nm, 1311nm, or 1331nm.

[0049] In one embodiment, the first laser is configured to emit the first optical signal at a first preset angle, and the second laser is configured to emit the second optical signal at a second preset angle. Both the first and second preset angles are calculated and optimized to match the optical parameters of the first and second lenses, respectively, so that the first and second optical signals can enter the first and second lenses at optimal incident angles. In one embodiment, the first and second preset angles can be between 5° and 9°.

[0050] The first lens and the second lens have specific optical characteristics such as curvature, focal length and refractive index. Their function is to collimate the first optical signal and the second optical signal, adjust the originally divergent or irregular optical signal into a form that is more suitable for transmission in the subsequent optical path, and then accurately transmit it to the isolator.

[0051] In one embodiment, the isolator has the characteristic of unidirectional transmission of optical signals, which can effectively block the propagation of reverse optical signals, thereby protecting the first laser and the second laser from interference from reflected light, so as to ensure the stable operation of the first laser and the second laser.

[0052] In one embodiment, the isolator is a tilt-free isolator, which is located at the intersection of the first optical signal and the second optical signal.

[0053] Typically, isolators may require a special tilt angle design based on the incident angle of the optical path. Conventional isolators have a 7° angle to prevent reflection and ensure unidirectional transmission of the optical signal in the desired direction, adapting to the corresponding optical path. However, in this embodiment, the first and second optical signals are emitted at a first preset angle and a second preset angle, respectively. Since the two optical paths themselves already have angles, a tilt-free isolator is used. On one hand, tilt-free isolators are relatively simple to manufacture, requiring no complex angle processing and calibration, which effectively reduces production complexity and manufacturing costs. Compared to tilted isolators, their production process is more standardized and scalable, reducing scrap rates caused by angle processing accuracy requirements, thus improving production efficiency and facilitating mass production for use in optical emitting components.

[0054] On the other hand, tilt-free isolators offer relatively higher performance stability. Since there is no risk of optical path deviation due to factors such as tilt angle processing errors, their unidirectional isolation and transmission functions for optical signals can operate more stably and reliably. This better prevents reverse optical signals from interfering with the laser, ensuring the normal operation of the laser and thus improving the stability and reliability of the entire optical emission assembly.

[0055] In one embodiment, the isolator is positioned at the intersection of the first and second optical signals. This arrangement avoids the additional space required for separate isolators for each optical signal, making the structure of the optical emitting component more compact and enabling more optical functions to be achieved within a limited space. When the first and second optical signals reach the intersection, the isolator can process them simultaneously. It can accurately transmit the first optical signal to the first waveguide and the second optical signal to the second waveguide, based on its unidirectional transmission characteristics, achieving effective integration and precise control of the two optical paths. Furthermore, this arrangement ensures that the mutual interference between the two optical signals is minimized when they pass through the isolator, a critical node, allowing each to transmit stably along its predetermined waveguide. This safeguards the optical performance of the entire optical emitting component, enabling optical signals from different lasers to participate efficiently and orderly in subsequent optical communication processes.

[0056] In order to reduce the attenuation of the first and second optical signals in the isolator and improve the optical transmission effect, in one embodiment, such as Figure 3 As shown, the optical surface of the isolator facing the first laser and the second laser is the light-incident surface, and the optical surface of the isolator away from the first laser and the second laser is the light-exit surface. Both the light-incident surface and the light-exit surface corresponding to the first optical signal are coated with a first anti-reflection film; both the light-incident surface and the light-exit surface corresponding to the second optical signal are coated with a second anti-reflection film.

[0057] Typically, a single wavelength of optical signal requires an isolator coated with a corresponding coating. For example, a 1310nm light source needs a 1310nm antireflection coating to minimize the attenuation of the incident light and improve the transmission performance of the optical signal. In this embodiment, the two optical paths (the first optical signal transmission path and the second optical signal transmission path) can each have their own coating applied along the path of the isolator, minimizing the attenuation of both optical signals. Furthermore, a single isolator can achieve the function of two isolators.

[0058] Reference Figure 4 The isolator is constructed of a homogeneous medium, with its incident and emitting surfaces parallel to each other. The optical transmission path of the optical signal in this type of isolator is as follows: The incident angles of the first optical signal with wavelength λ1 and the second optical signal with wavelength λ2 are both ∠1. The angle at which the first optical signal propagates in the medium is ∠2', and the angle at which the second optical signal propagates in the medium is ∠2. Due to the different wavelengths, the refractive indices in the medium are different. Therefore, when optical signals with the same incident angle are incident on the isolator end face, their refraction angles inside the isolator are different. When the light exits from the isolator's emitting surface, the exit angle is still consistent with the incident angle (both are ∠1), but its lateral offset inside the isolator (the lateral offset of the first optical signal is T1, and the lateral offset of the second optical signal is T2) is different. Due to the different wavelengths, their deflection angles in the medium are different, resulting in the emitted light rays not having a symmetrical structure; the difference is T2-T1. The two beams of light that emerge are not symmetrical. The asymmetry here refers to the fact that when the two light signals are incident on the isolator, the incident points of the two light signals on the incident surface of the isolator are symmetrical with respect to the dashed line M. In order to facilitate the installation of subsequent structures, in some embodiments, the two light signals emitted from the light-emitting surface of the isolator need to be symmetrical with respect to the dashed line M.

[0059] To ensure the two beams of light are symmetrical with respect to the dashed line M, and to facilitate installation, in one embodiment, as follows: Figure 4 and Figure 5 As shown, the isolator includes a first medium, and a second medium with a preset width is disposed in the first medium. The second medium and the bottom surface of the first medium have a preset angle. The second medium is disposed on the propagation path of the second optical signal. In the isolator, the transmission path of the second optical signal passes through the first medium, the second medium, and the first medium in sequence and then is emitted from the light-emitting surface of the isolator. The transmission path of the first optical signal passes through the first medium and then is emitted from the light-emitting surface of the isolator, so that the optical axes of the first optical signal and the second optical signal obtained after transmission through the isolator remain symmetrical.

[0060] In one embodiment, the light-incident surface and the light-exit surface of the isolator are parallel to each other.

[0061] Reference Figure 5 The isolator is made of a first medium, a second medium, and alternating first mediums. In one embodiment, the first medium is yttrium iron garnet and the second medium is air.

[0062] Taking the second optical signal as an example, by shifting the light emission point of the second optical signal downward by a length of T2-T1 on the light emission surface of the isolator, the two optical signals emitted from the light emission surface of the isolator can be made symmetrical about the dashed line M.

[0063] In one embodiment, the second laser emits a second optical signal with a wavelength of λ2. This second optical signal is incident on the first medium of the isolator via the second lens. When the second optical signal reaches point X1, its refractive index changes as it transitions from the first medium to the second medium. It then travels through the second medium to point X2, before returning to the first medium and exiting from the isolator's emitting surface. When the isolator is designed using only the same medium, the second optical signal passes directly from point X1 to point X3 and then exits directly from the isolator's emitting surface. By incorporating a second medium within the first medium, the emitting point of the second optical signal on the isolator's emitting surface is moved downwards until it is symmetrical to the emitting point of the first optical signal on the isolator's emitting surface along a straight line M, thus achieving the aforementioned objective.

[0064] The following describes the setting method of the second medium. In one embodiment, the preset angle between the second medium and the preset width are determined based on the wavelength of the first optical signal, the wavelength of the second optical signal, the refractive index of the first optical signal in the first medium, the refractive index of the first optical signal in the second medium, and the refractive index of the second optical signal in the first medium.

[0065] First, the first medium is determined. Then, the material selected for the second medium, the preset included angle, and the preset width are obtained. The second medium can then be fabricated on the first medium, and finally, the isolator is obtained.

[0066] In one embodiment, according to Figure 4 and Figure 5 To determine the geometric relationship, first obtain the first medium, calculate the value of T2-T1, and then set X2X3 = T2-T1 to obtain the length of the line X2X3. See the following example for the specific calculation process.

[0067] exist Figure 4In the given information, T2 = L * tan∠2, T1 = L * tan∠2', and the length of line X2X3 can be calculated; where L is the horizontal length of the isolator. For example... Figure 5 As shown, the relationships between the angles are as follows:

[0068] n1*sin∠A=n2*sin∠B

[0069]

[0070] n2*sin(90°-∠B-∠C)=n1*sin∠D

[0071]

[0072] In △X1X2X3:

[0073] ∠X2X1X3=∠D-(90°-∠B-∠C)

[0074]

[0075] Let the length of line X1X2 be H, then:

[0076]

[0077] ∠F = 90° - ∠D

[0078]

[0079] Wherein, n1 is the refractive index of the second optical signal in the second medium, n2 is the refractive index of the second optical signal in the first medium, ∠C is the preset angle, and d is the preset width.

[0080] In summary, by identifying the first and second media, we obtain ∠A, n1, and n2, and thus ∠B. After identifying ∠B, we can obtain ∠D. Then, according to the sine theorem, we can calculate the relationship between ∠C and d. Setting a corresponding ∠C will correspond to a d. At the same time, different shapes of isolators can be designed according to different media and different wavelengths of optical signals. More specific details will not be explained in this embodiment.

[0081] To enhance the transmission effect of the optical signal after transmission through the isolator, in one embodiment, such as Figure 6 As shown, the optical emitting component further includes a first converging lens, which is disposed between the isolator and the first waveguide and the second waveguide; the first converging lens is used to converge the first optical signal into the first waveguide, and the first converging lens is also used to converge the second optical signal into the second waveguide.

[0082] In the optical path of the light emitting component, the energy distribution and propagation direction of the light signal after transmission through the isolator may be relatively dispersed. The introduction of the first converging lens can change the propagation path of the light signal based on the optical refraction principle of the lens, causing the light rays to bend towards the central axis, thereby effectively converging the light signal.

[0083] For the first optical signal, after being transmitted from the isolator, it might initially propagate towards the first waveguide in a somewhat divergent manner. The first converging lens can refocus these dispersed rays, allowing the first optical signal to enter the first waveguide in a more concentrated form with higher energy density. Similarly, for the second optical signal, the first converging lens can converge the second optical signal from the isolator and guide it into the second waveguide, improving the coupling efficiency of the optical signal entering the corresponding waveguide, reducing the loss of optical energy during transmission to the waveguide, and ensuring the transmission quality of the optical signal.

[0084] In the optical path system of the optical emitting component, the transmission direction of the optical signal cannot be changed after it passes through the isolator. Then, coupling is performed into the corresponding waveguides to couple the optical signal into them. To control the transmission direction of the optical signal after transmission through the isolator and improve the transmission effect, in one embodiment, such as... Figure 7 As shown, the optical emitting assembly further includes a second converging lens and a third converging lens; the second converging lens is disposed on the transmission optical path between the isolator and the first waveguide, and the third converging lens is disposed on the transmission optical path between the isolator and the second waveguide; the second converging lens is used to adjust the incident angle of the first optical signal after passing through the isolator onto the first waveguide; the third converging lens is used to adjust the incident angle of the second optical signal after passing through the isolator onto the first waveguide.

[0085] The second converging lens is positioned in the transmission optical path between the isolator and the first waveguide, utilizing the refractive properties of the lens to alter the propagation direction of the first optical signal. According to the principles of geometric optics, light refracts when passing through the interface between different media (in this case, air and the lens). The second converging lens, through its specific curvature, refractive index, and other optical parameters, can precisely guide the first optical signal after it has passed through the isolator, ensuring that its angle of incidence into the first waveguide is optimal. This guarantees that the first optical signal can propagate along the direction most favorable for entering the first waveguide and for stable subsequent transmission within it.

[0086] Similarly, the third converging lens is positioned in the optical path between the isolator and the second waveguide. It can cleverly adjust the propagation path of the second optical signal according to the requirements of the second waveguide for the incident light angle, so that the second optical signal arrives at the second waveguide with an accurate incident angle. This achieves fine control over the direction of optical signal transmission, avoids optical signal reflection and scattering caused by improper incident angle, and ensures that the optical signal can smoothly enter the corresponding waveguide for subsequent transmission.

[0087] In addition to controlling the transmission direction, the second and third converging lenses also play an important role in improving the transmission effect of optical signals.

[0088] On the one hand, by adjusting the incident angle, the optical signal can enter the waveguide at a near-perpendicular angle or in accordance with the waveguide's optimal receiving angle, thus minimizing reflection loss at the waveguide entrance. This is because when the optical signal is incident at an inappropriate angle, some light energy is reflected back, resulting in energy loss. These two converging lenses effectively improve this situation, increasing the coupling efficiency of the optical signal entering the waveguide and allowing more light energy to be received and transmitted by the waveguide.

[0089] On the other hand, the converging lens's focusing effect on the optical signal also concentrates the light energy. The optical signal after passing through the isolator may be relatively dispersed. The second converging lens can converge the first optical signal, making its spot size more suitable for the entrance size of the first waveguide. Similarly, the third converging lens can also converge the second optical signal to better match the entrance of the second waveguide, thereby enhancing the transmission stability of the optical signal within the waveguide, reducing energy attenuation caused by excessive dispersion of the optical signal during transmission, and further improving the overall transmission effect of the optical signal.

[0090] In one embodiment, such as Figure 8 and Figure 9 As shown, silicon photonics modules based on silicon photonics chips generally adopt a dual-lens scheme. The dual-lens scheme (such as...) Figure 7 The mounting tolerance of (as shown) will be lower than that of a single lens (such as...). Figure 2 (As shown) has significant advantages.

[0091] The optical path proposed in this embodiment involves two lasers arranged at a certain angle. The first and second lenses close to the lasers are collimated first and second optical signals emitted by the laser module. The isolator is placed at the intersection of the two collimated optical paths, and then the signals are converged by the converging lenses to couple the light into the corresponding waveguides. On the other hand, based on the above, the side of the first and second converging lenses closest to the silicon photonics chip can be angled to flexibly adjust the angle at which the first optical signal enters the first waveguide and the angle at which the second optical signal enters the second waveguide.

[0092] The two lasers in the optical emitting component of the high-speed optical module proposed in this embodiment can share a single isolator, eliminating the need for an isolator and thus reducing the installation size of the optical emitting component and lowering the production cost of the high-speed optical module. At the same time, by incidenting the light emitted by the laser onto the surface of the isolator at a certain angle, the isolator can be manufactured at a 0° angle. Since the optical path itself already has an angle, the isolator can be manufactured without an angle, which further reduces the difficulty of isolator production and thus further reduces the production cost of the high-speed optical module.

[0093] Example 2:

[0094] In Example 1, an optical emitting component was proposed. In this example, a high-speed optical module will be proposed, such as... Figure 10 As shown, the high-speed optical module includes an optical emitting component, an optical receiving component, and a control circuit board as described in Embodiment 1; the control terminal of the laser component in the optical emitting component is connected to the control circuit board, and the electrical signal terminal of the photodetector in the optical receiving component is connected to the control circuit board.

[0095] The optical emitting component is used to receive the electrical signal from the control circuit board and emit an optical signal, and the optical receiving component is used to convert the received optical signal into an electrical signal and transmit the corresponding electrical signal to the control circuit board.

[0096] The specific structure of the optical emitting component will not be described in detail in this embodiment.

[0097] Example 3:

[0098] In Example 1, a light-emitting component was proposed. In this example, a light-emitting method will be proposed, such as... Figure 11 As shown, it includes:

[0099] Step 101: The first laser emits a first optical signal at a first preset angle, the first lens transmits the first optical signal to the isolator, and the isolator converges the first optical signal into the first waveguide.

[0100] The first laser emits a first optical signal at a first preset angle. The first lens, upon receiving the first optical signal emitted by the first laser, performs its transmission function based on its own optical principles. By reasonably converging the potentially divergent or irregularly oriented first optical signal emitted from the first laser, the energy of the first optical signal can be more concentrated, reducing optical energy loss during transmission. Simultaneously, it ensures that the optical signal can be accurately incident on the isolator, improving the coupling efficiency of the optical path.

[0101] Step 102: The second laser emits a second optical signal at a second preset angle, the second lens transmits the second optical signal to the isolator, and the isolator also focuses the second optical signal into the second waveguide.

[0102] The second laser emits a second optical signal at a second preset angle. The second lens receives the second optical signal, processes it based on its own optical properties, and transmits it to the isolator.

[0103] The isolator transmits the first optical signal from the first lens and the second optical signal from the second lens into the first waveguide and the second waveguide, respectively, so that the first optical signal and the second optical signal can be used in their respective waveguides.

[0104] The specific structure of the optical emitting component will not be described in detail in this embodiment.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light emitting component, characterized in that, include: A first laser, a second laser, a first lens, a second lens, and an isolator; The first laser and the first lens are coupled sequentially along the optical path, and the second laser and the second lens are coupled sequentially along the optical path; the first laser is used to emit a first optical signal at a first preset angle, the first lens is used to transmit the first optical signal to the isolator, and the isolator is used to converge the first optical signal into the first waveguide; The second laser is used to emit a second optical signal at a second preset angle, the second lens is used to transmit the second optical signal to the isolator, and the isolator is also used to converge the second optical signal into the second waveguide; The isolator is located at the intersection of the first optical signal and the second optical signal.

2. The light emitting component according to claim 1, characterized in that, The optical surface of the isolator facing the first laser and the second laser is the light-incident surface, and the optical surface of the isolator away from the first laser and the second laser is the light-exit surface. A first anti-reflection film is coated on both the light-incident surface and the light-exit surface corresponding to the first optical signal; a second anti-reflection film is coated on both the light-incident surface and the light-exit surface corresponding to the second optical signal.

3. The light emitting component according to claim 1, characterized in that, The isolator includes a first medium, a second medium having a preset width disposed in the first medium, the second medium having a preset angle with the bottom surface of the first medium, and the second medium being disposed on the propagation path of the second optical signal; In the isolator, the transmission path of the second optical signal passes sequentially through the first medium, the second medium, and the first medium before being emitted from the light-emitting surface of the isolator; The transmission path of the first optical signal passes through the first medium and is emitted from the light-emitting surface of the isolator, so that the optical axes of the first optical signal and the second optical signal obtained after transmission through the isolator remain symmetrical.

4. The light emitting component according to claim 3, characterized in that, Based on the wavelength of the first optical signal, the wavelength of the second optical signal, the refractive index of the first optical signal in the first medium, the refractive index of the first optical signal in the second medium, and the refractive index of the second optical signal in the first medium, the preset angle between the second medium and the preset width are determined.

5. The optical emitting component according to claim 3, characterized in that, The first medium is yttrium iron garnet, and the second medium is air.

6. The optical emitting component according to claim 1, characterized in that, The optical emitting component further includes a first converging lens, which is disposed between the isolator and the first waveguide and the second waveguide; The first converging lens is used to converge the first optical signal into the first waveguide, and the first converging lens is also used to converge the second optical signal into the second waveguide.

7. The optical emitting component according to claim 1, characterized in that, The optical emitting component further includes a second converging lens and a third converging lens; the second converging lens is disposed on the transmission optical path between the isolator and the first waveguide, and the third converging lens is disposed on the transmission optical path between the isolator and the second waveguide; The second converging lens is used to adjust the incident angle of the first optical signal after passing through the isolator onto the first waveguide; The third converging lens is used to adjust the incident angle of the second optical signal after passing through the isolator onto the first waveguide.

8. The light emitting component according to any one of claims 1-7, characterized in that, The wavelengths of the first optical signal and the second optical signal are 1271nm, 1291nm, 1311nm or 1331nm.

9. The light emitting component according to any one of claims 1-7, characterized in that, The isolator is a tilt-free isolator.

10. A method for emitting light, characterized in that, The method is applicable to the optical emitting assembly as described in any one of claims 1-9, comprising: The first laser emits a first optical signal at a first preset angle, the first lens transmits the first optical signal to the isolator, and the isolator transmits the first optical signal into the first waveguide; The second laser emits a second optical signal at a second preset angle, the second lens transmits the second optical signal to the isolator, and the isolator also transmits the second optical signal into the second waveguide.

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