Optical transceiver assembly, optical fiber connector, and optical module

Abstract

The present application provides an optical transceiver assembly, an optical fiber connector, and an optical module. Lenses are disposed at three ports of an optical circulator, so that a plurality of beams of laser light emitted by a plurality of optical ports of one transmitting end can be collimated into collimated light by means of a lens, and then a plurality of beams of collimated light share the optical circulator for optical path propagation. The number of optical circulators in the optical transceiver assembly is reduced, facilitating the miniaturized design of the optical transceiver assembly.

Description

An optical transceiver assembly, an optical fiber connector, and an optical module

[0001] This application claims priority to Chinese Patent Application No. 202411611285.2, filed on November 11, 2024, entitled "An optical transceiver assembly, fiber optic connector and optical module", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of optical communication, and more particularly to an optical transceiver assembly, an optical fiber connector, and an optical module. Background Technology

[0003] In optical fiber communication, a three-port optical circulator (also called a circulator) is introduced to enable bidirectional transmission of the same wavelength on a single fiber. This allows transmitted and received optical signals of the same wavelength in the optical transceiver assembly to be transmitted bidirectionally on the same optical fiber. As shown in Figure 1, the single-fiber bidirectional optical fiber is connected to two transceivers (e.g., transceiver 1 and transceiver 2) through two optical circulators (e.g., optical circulator 1 and optical circulator 2). Each optical circulator has three ports, which are connected to the transmitter end of the transceiver, the receiver end of the transceiver, and the single-fiber bidirectional optical fiber, respectively. The transmitter end 1 of transceiver 1 is connected to port 1 of optical circulator 1, and optical circulator 1 is connected to the single-fiber bidirectional optical fiber. The optical signal output from transmitter end 1 first enters optical circulator 1 through port 1, and then exits to the optical fiber through port 2. The optical signal transmitted through the optical fiber enters optical circulator 2 through port 2, and then exits to receiver end 2 of transceiver 2 through port 3. Transceiver 2's transmitting end 2 is connected to port 1 of optical circulator 2. Optical circulator 2 is connected to a single-fiber bidirectional optical fiber. The optical signal output from transmitting end 2 first enters optical circulator 2 through port 1, and then exits to the optical fiber through port 2. The optical signal transmitted through the optical fiber enters optical circulator 1 through port 2, and then exits to receiving end 1 of transceiver 1 through port 3. Therefore, a transceiver used in conjunction with an optical circulator can reduce the number of optical fibers originally used for transmission from two to one, increasing the communication capacity of a single fiber and reducing the number of fibers required.

[0004] However, when an optical component contains two or more light-receiving paths, it also requires two or more independent optical circulators, which is not conducive to the miniaturization of the optical component. Summary of the Invention

[0005] This application provides an optical transceiver assembly, an optical fiber connector, and an optical module, which are used to realize the transceiver switching of multiple optical paths in the same optical assembly through an optical circulator, which is beneficial to the miniaturization of optical assemblies.

[0006] In a first aspect, embodiments of this application provide an optical transceiver assembly, which includes an optical circulator, an optical transmitter, an optical receiver, a common terminal, and at least three lenses. The optical circulator has three ports, each of which is respectively configured with an optical transmitter, an optical receiver, and a common terminal. A first lens is disposed between the optical transmitter and a first port of the optical circulator, a second lens is disposed between the common terminal and a second port of the circulator, and a third lens is disposed between the optical receiver and a third port of the optical circulator. The optical transmitter has N first optical ports, the common terminal has N second optical ports, and the optical receiver has N third optical ports. Specifically, in the transmission direction, the optical transmitter emits N laser beams through N first optical ports, where N is an integer greater than 1; a first lens processes the N laser beams into N collimated beams and projects them onto the first port of an optical circulator; the optical circulator propagates the N collimated beams to the second port of the optical circulator; a second lens converges the N collimated beams emitted from the second port into N laser beams; and a common end receives the N laser beams through N second optical ports, and the common end is used to connect to a single-fiber bidirectional optical fiber. In the reception direction, the common end also emits N laser beams through N second optical ports; a second lens processes the N laser beams from the second optical ports into N collimated beams and projects them onto the second port of an optical circulator; the optical circulator propagates the N collimated beams to the third port of the optical circulator; a third lens converges the N collimated beams emitted from the third port into N laser beams; and the optical receiver receives the N laser beams through N third optical ports.

[0007] In this embodiment, lenses are placed at the three ports of the optical circulator, so that multiple laser beams emitted from multiple optical ports can be collimated into collimated light through the lenses, and then the multiple collimated beams share the optical circulator for optical path propagation. This reduces the number of optical circulators in the optical transceiver assembly, which is beneficial for the miniaturization design of the optical transceiver assembly.

[0008] In one possible implementation, the arrangement of the N first optical ports at the optical transmitter is the same as the arrangement of the N second optical ports at the common end, and the arrangement of the N third optical ports at the optical receiver is the same as the arrangement of the N second optical ports at the common end.

[0009] In this embodiment, the optical ports of the optical transmitter, the common end, and the optical receiver are arranged in the same way, so that N laser beams can be accurately transmitted from the N first optical ports of the optical transmitter to the N second optical ports of the common end, or so that N laser beams can be accurately transmitted from the N second optical ports of the common end to the N third optical ports of the optical receiver.

[0010] In one possible implementation, the maximum distance between any two first optical ports among the N first optical ports is less than the diameter of the first lens; the maximum distance between any two second optical ports among the N second optical ports is less than the diameter of the second lens; and the maximum distance between any two third optical ports among the N third optical ports is less than the diameter of the third lens.

[0011] In this embodiment, by controlling the spacing between optical ports, more laser signals can be transmitted within a smaller aperture, which is beneficial to improving the utilization efficiency of the optical circulator and also to improving the efficiency of optical fiber communication.

[0012] In one possible implementation, N first optical ports are arranged in a straight line, and the distance between two adjacent first optical ports is related to the diameter of the first lens; N second optical ports are arranged in a straight line, and the distance between two adjacent second optical ports is related to the diameter of the second lens; N third optical ports are arranged in a straight line, and the distance between two adjacent third optical ports is related to the diameter of the third lens.

[0013] In one possible implementation, the N first optical ports are arranged in an array of n rows and m columns, the N second optical ports are arranged in an array of n rows and m columns, and the N third optical ports are arranged in an array of n rows and m columns; wherein the product of n and m is equal to N, n is an integer greater than 0, and m is an integer greater than 0.

[0014] In one possible implementation, the distance between two adjacent first optical ports is N times smaller than the diameter of the first lens; the distance between two adjacent second optical ports is N times smaller than the diameter of the second lens; and the distance between two adjacent third optical ports is N times smaller than the diameter of the third lens.

[0015] In one possible implementation, the angle between the propagation direction of the laser emitted from the first optical port and the principal optical axis of the first lens is less than or equal to 7°; the angle between the propagation direction of the laser emitted from the second optical port and the principal optical axis of the second lens is less than or equal to 7°; and the angle between the propagation direction of the laser emitted from the third optical port and the principal optical axis of the third lens is less than or equal to 7°.

[0016] For example, taking the first optical port as an example, the angle between the propagation direction of the laser emitted by the first optical port and the principal optical axis of the first lens is any one of 6°, 5°, 4° or 3°.

[0017] In this embodiment, since the multiple lasers emitted by the light emitting end do not completely pass through the principal optical axis of the first lens, but some lasers have an angle with the principal optical axis of the first lens, controlling the size of this angle helps to ensure that none of the multiple lasers exceed the diameter of the first lens.

[0018] In one possible implementation, the optical circulator includes a first polarization beamsplitter, a second polarization beamsplitter, a Faraday rotator, and a half-wave plate. The Faraday rotator and the half-wave plate are arranged adjacent to each other. The first polarization beamsplitter and the second polarization beamsplitter are located on opposite sides of the Faraday rotator and the half-wave plate, respectively. The first polarization beamsplitter is close to the first port, and the second polarization beamsplitter is close to the second port.

[0019] In one possible implementation, a first polarization beam splitter is used to separate N collimated laser beams from a first port into N first polarized beams and / or N second polarized beams, the polarization directions of the first polarized beams being different from those of the second polarized beams; a Faraday rotator and a half-wave plate are used to rotate the polarization direction of the first polarized beams to obtain a third polarized beam, and / or rotate the polarization direction of the second polarized beams to obtain a fourth polarized beam, the polarization direction of the third polarized beam being the same as that of the second polarized beam, and the polarization direction of the fourth polarized beam being the same as that of the first polarized beam; a second polarization beam splitter is used to combine the N third polarized beams and / or the N fourth polarized beams into N collimated laser beams, which are emitted along the second port.

[0020] Optionally, the polarization direction of the first laser is perpendicular to the polarization direction of the second laser.

[0021] In one possible implementation, a second polarization beam splitter is used to separate N collimated laser beams from the second port into N fifth-polarized beams and / or N sixth-polarized beams, the polarization directions of the fifth-polarized beams being different from those of the sixth-polarized beams; a half-wave plate and a Faraday rotator are used to rotate the polarization direction of the fifth-polarized beams to obtain seventh-polarized beams, and / or rotate the polarization direction of the sixth-polarized beams to obtain eighth-polarized beams, the polarization directions of the seventh-polarized beams being the same as those of the fifth-polarized beams, and the polarization directions of the eighth-polarized beams being the same as those of the sixth-polarized beams; a first polarization beam splitter is used to combine the N seventh-polarized beams and / or the N eighth-polarized beams into N collimated laser beams, which are emitted along the third port.

[0022] Optionally, the polarization direction of the fifth laser is perpendicular to the polarization direction of the sixth laser.

[0023] Secondly, embodiments of this application provide an optical fiber connector comprising N transmitting ports, N receiving ports, N common ports, and an optical transceiver assembly as described in any of the embodiments of the first aspect, where N is an integer greater than 1. The N transmitting ports are connected to the optical transmitter of the optical transceiver assembly and are used to transmit N laser beams to the optical transmitter. The N laser beams pass through a first lens, an optical circulator, and a second lens to reach the common port of the optical transceiver assembly. The N common ports are connected to the common port of the optical transceiver assembly and are used to receive N laser beams from the common port. Furthermore, the N common ports, also connected to the common port of the optical transceiver assembly, are also used to transmit N laser beams to the common port. The N laser beams pass through a second lens, an optical circulator, and a third lens to reach the optical receiver of the optical transceiver assembly. The N receiving ports are connected to the optical receiver of the optical transceiver assembly and are used to receive N laser beams from the optical receiver.

[0024] Thirdly, embodiments of this application provide an optical module that includes the optical transceiver components described in any of the embodiments of the first aspect. Attached Figure Description

[0025] Figure 1 is an example diagram of an optical component that includes an optical circulator in conventional technology;

[0026] Figure 2 is a schematic diagram of an embodiment of the optical transceiver component provided in this application;

[0027] Figure 3 is a schematic diagram of another embodiment of the optical transceiver component provided in this application;

[0028] Figure 4A is an example diagram of the optical path propagation characteristics of the optical transceiver component provided in this application in the transmission direction;

[0029] Figure 4B is another example diagram of the optical path propagation characteristics of the optical transceiver component provided in this application in the transmission direction;

[0030] Figure 5A is an example diagram of the optical transceiver assembly provided in this application;

[0031] Figure 5B is another example diagram of the optical transceiver assembly provided in this application;

[0032] Figure 5C is another example diagram of the optical transceiver assembly provided in this application;

[0033] Figure 6 is another example diagram of the optical transceiver component provided in this application;

[0034] Figure 7 is another example diagram of the optical transceiver component provided in this application;

[0035] Figure 8 is a schematic diagram of an embodiment of the optical fiber connector provided in this application;

[0036] Figure 9A is an example diagram of the optical fiber connector provided in this application;

[0037] Figure 9B is another example diagram of the fiber optic connector provided in this application;

[0038] Figure 10 is an example diagram of the optical transmission device provided in this application;

[0039] Figure 11 is an example diagram of the optical module provided in this application;

[0040] Figure 12 is another example diagram of the optical module provided in this application. Detailed Implementation

[0041] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0042] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0043] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such terms are interchangeable where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0045] This application provides an optical transceiver assembly, an optical fiber connector, and an optical module, which are used to realize the transceiver switching of multiple optical paths in the same optical assembly through an optical circulator, which is beneficial to the miniaturization of optical assemblies.

[0046] Figures 2 and 3 are example diagrams of an optical transceiver assembly provided in an embodiment of this application. The optical transceiver assembly 00 shown in Figure 2 operates in the transmission direction, and the optical transceiver assembly 00 shown in Figure 3 operates in the reception direction. As shown in Figure 2 or Figure 3, the optical transceiver assembly 00 provided in this embodiment includes an optical circulator 01, an optical transmitter 02, an optical receiver 03, a common terminal 04 (also called an optical transceiver), and at least three lenses. The optical transmitter 02 is used to transmit laser signals, the optical receiver 03 is used to receive laser signals, and the common terminal 04 is connected to a single-fiber bidirectional optical fiber for transmitting or receiving laser signals. The optical circulator 01 has three ports, each corresponding to an optical transmitter 02, an optical receiver 03, and a common terminal 04. For example, the optical circulator 01 may have a first port 011, a second port 012, and a third port 013, where the first port 011 corresponds to the optical transmitter 02, the second port 012 corresponds to the common terminal 04, and the third port 013 corresponds to the optical receiver 03. As shown in Figure 2, in the transmission direction, the laser signal emitted by the optical transmitter 02 enters the optical circulator 01 through the first port 011. This laser signal then exits from the second port 012 after passing through the optical circulator 01. The common end 04 receives the laser signal propagated from the optical circulator 01 through the second port 012 and transmits it to the single-fiber bidirectional optical fiber. As shown in Figure 3, in the reception direction, the laser signal emitted from the single-fiber bidirectional optical fiber by the common end 04 enters the optical circulator 01 through the second port 012. This laser signal then exits from the third port 013 after passing through the optical circulator 01. The optical receiver 03 receives the laser signal propagated from the optical circulator 01 through the third port 013.

[0047] It should be noted that the three ports of the optical circulator 01 can be distributed on two surfaces of the optical circulator 01 (for example, as shown in Figure 2 or Figure 3), or they can be distributed on the three surfaces of the optical circulator 01 respectively. This embodiment does not limit this.

[0048] Compared with optical transceiver components in conventional technologies, the optical transceiver component 00 provided in this application embodiment has multiple optical ports in its optical transmitter 02, optical receiver 03 and common terminal 04. Furthermore, three lenses are provided in the three ports of the optical circulator 01, so that multiple laser signals from multiple optical ports can be introduced into the same optical circulator 01 through the lenses, and thus the propagation of multiple optical signals can be achieved through the same optical circulator 01.

[0049] Specifically, as shown in Figure 2 or Figure 3, a first lens 05 is disposed between the light emitting end 02 and the first port 011 of the circulator 01, a second lens 06 is disposed between the common end 04 and the second port 012 of the circulator 01, and a third lens 07 is disposed between the light receiving end 03 and the third port 013 of the circulator 01. The light emitting end 02 is provided with N first optical ports, the light receiving end 03 is provided with N second optical ports, and the common end 04 is provided with N third optical ports, where N is an integer greater than 1.

[0050] As shown in Figure 2, in the transmission direction, the optical transmitter 02 emits N laser beams through N first optical ports, meaning each first optical port emits one laser beam, and the N first optical ports emit a total of N laser beams. The N laser beams can have the same wavelength or different wavelengths; this embodiment is not limited in this respect. The first lens 05 processes the N laser beams into N collimated beams and projects them onto the first port 011 of the optical circulator 01. The optical circulator 01 propagates the N collimated beams to its second port 012. The second lens 06 converges the N collimated beams emitted from the second port 012 into N laser beams. The common end 04 receives the N laser beams through N second optical ports, meaning the N laser beams arriving at the common end 04 correspond one-to-one with each of the N second optical ports. Then, the N laser beams are transmitted to the single-fiber bidirectional optical fiber connected to the common end 04.

[0051] As shown in Figure 3, in the receiving direction, the common terminal 04 is also used to emit N laser beams through N second optical ports, that is, each second optical port emits one laser beam, and the N second optical ports emit a total of N laser beams. The N laser beams can have the same wavelength or different wavelengths; this embodiment is not limited. The second lens 06 is used to process the N laser beams from the second optical ports into N collimated beams and project the N collimated beams onto the second port 012 of the optical circulator 01. The optical circulator 01 is used to propagate the N collimated beams to the third port 013 of the optical circulator 01. The third lens 07 is used to converge the N collimated beams emitted from the third port 013 into N laser beams. The optical receiver 03 receives the N laser beams through the N third optical ports respectively, that is, the N laser beams arriving at the optical receiver 03 correspond one-to-one with the N third optical ports.

[0052] It should be noted that the laser signal emitted by optical transmitter 02 and the laser signal emitted by common terminal 04 can be different optical signals. For example, the laser signal emitted by optical transmitter 02 is transmitted to the optical transceiver component at the other end through optical circulator 01, common terminal 04 and single-fiber bidirectional optical fiber, and the laser signal emitted by common terminal 04 is the response optical signal generated by the optical transceiver component at the other end based on the received laser signal.

[0053] In this embodiment, lenses are provided at the three ports of the optical circulator 01 so that multiple laser beams emitted from multiple optical ports can be collimated into collimated light through the lenses, and then the multiple collimated beams share the optical circulator 01 for optical path propagation. This reduces the number of optical circulators 01 in the optical transceiver assembly 00, which is beneficial for the miniaturization design of the optical transceiver assembly 00.

[0054] It should be understood that the arrangement of the N first optical ports at the optical transmitter 02 is the same as the arrangement of the N second optical ports at the common terminal 04, and the arrangement of the N third optical ports at the optical receiver 03 is the same as the arrangement of the N second optical ports at the common terminal 04. In other words, the optical ports of the optical transmitter 02, the common terminal 04, and the optical receiver 03 are arranged in the same way so that N laser beams can be accurately transmitted from the N first optical ports of the optical transmitter 02 to the N second optical ports of the common terminal 04, or so that N laser beams can be accurately transmitted from the N second optical ports of the common terminal 04 to the N third optical ports of the optical receiver 03.

[0055] It should be noted that the N optical ports can be arranged in any of the following ways:

[0056] In one possible implementation, the N optical ports are arranged in a straight line. For example, as shown in Figure 4A, the N first optical ports are arranged in a straight line, the N second optical ports are arranged in a straight line, and the N third optical ports are arranged in a straight line.

[0057] In another possible implementation, the N optical ports are arranged in an array of n rows and m columns, where the product of n and m equals N, n is a positive integer, and m is a positive integer. For example, the N first optical ports are arranged in an array of n rows and m columns, the N second optical ports are arranged in an array of n rows and m columns, and the N third optical ports are arranged in an array of n rows and m columns. For example, as shown in Figure 4B, taking n=4 and m=2 as an example, the optical transmitter 02 has 4 rows and 2 columns, for a total of 8 first optical ports. Since the distribution of the optical ports of the optical transmitter 02 is the same as that of the optical ports of the common terminal 04, the common terminal 04 also has 4 rows and 2 columns, for a total of 8 second optical ports.

[0058] In this embodiment, the N optical ports may also be arranged in other ways, such as a circular dot matrix or other shaped dot matrix, and examples will not be listed here.

[0059] Optionally, the spacing between the N optical ports is related to the size of the lenses corresponding to the N optical ports. For example, the maximum distance between any two first optical ports among the N first optical ports is less than the diameter of the first lens 05; the maximum distance between any two second optical ports among the N second optical ports is less than the diameter of the second lens 06; and the maximum distance between any two third optical ports among the N third optical ports is less than the diameter of the third lens 07.

[0060] It should be understood that the maximum distance between any two optical ports out of N optical ports is related to the arrangement of the N optical ports. Examples are given below:

[0061] In one example, as shown in Figure 4A, N optical ports are arranged in a straight line. The maximum distance between any two optical ports is the distance between the first and Nth optical ports. Since the N optical ports arranged in a straight line are equally spaced, the distance between two adjacent optical ports in the optical transceiver assembly 00 is related to the diameter of the lens corresponding to that optical port. For example, N times the distance between two adjacent first optical ports is less than the diameter of the first lens 05; N times the distance between two adjacent second optical ports is less than the diameter of the second lens 06; and N times the distance between two adjacent third optical ports is less than the diameter of the third lens 07.

[0062] For example, as shown in Figure 4A, taking the N first optical ports set on the light emitting end 02 as an example, the distance between two adjacent first optical ports is P, and the diameter of the first lens 05 is D. Then P×N≤D. Where P is greater than 0, D is greater than 0, and N is an integer greater than 1.

[0063] In this example, by setting the spacing between the N optical ports, the laser signals emitted from the N optical ports partially overlap. This is beneficial for transmitting a larger number of laser signals within a smaller aperture, improving the utilization efficiency of the optical circulator 01, and also improving the efficiency of fiber optic communication.

[0064] In another example, as shown in Figure 4B, the N optical ports are arranged in an array of n rows and m columns. The maximum distance between any two optical ports is the distance between the port in the 1st row and 1st column and the port in the nth row and mth column. For example, as shown in Figure 4B, with n=4 and m=2, the light emitter 02 has 8 first optical ports arranged in 4 rows and 2 columns. In this example, the maximum distance between any two optical ports is the distance between port 1 and port 5 located diagonally. The distance between port 1 and port 5 is less than the diameter of the first lens 05.

[0065] Optionally, the diameter of the first port is the same as the diameter of the second port, and the diameter of the third port is the same as the diameter of the second port.

[0066] Optionally, the diameter of the first lens is the same as the diameter of the second lens, and the diameter of the second lens is the same as the diameter of the third lens.

[0067] Optionally, the propagation paths of the N laser beams emitted from the N optical ports have an angle θ with the principal optical axis of the corresponding lens, where 0° < θ < 7°. For example, the angle between the propagation direction of the laser emitted from the first optical port and the principal optical axis of the first lens 05 is less than or equal to 7°; the angle between the propagation direction of the laser emitted from the second optical port and the principal optical axis of the second lens 06 is less than or equal to 7°; and the angle between the propagation direction of the laser emitted from the third optical port and the principal optical axis of the third lens 07 is less than or equal to 7°. For example, taking the first optical port as an example, the angle between the propagation direction of the laser emitted from the first optical port and the principal optical axis of the first lens is 6°, 5°, 4°, or 3°. Since the multiple laser beams emitted from the optical emitter do not completely pass through the principal optical axis of the first lens, but rather some laser beams have an angle with the principal optical axis of the first lens, controlling the size of this angle helps to ensure that none of the multiple laser beams exceed the diameter of the first lens.

[0068] It should be noted that the aforementioned included angle θ causes the N laser beams emitted from the N optical ports to travel through the same center before reaching the opposite optical ports during their propagation inside the circulator. For example, the N laser beams emitted from the N first optical ports travel through the same center during their propagation inside the circulator before reaching the N second optical ports respectively. Similarly, the N laser beams emitted from the N second optical ports travel through the same center during their propagation inside the circulator before reaching the N third optical ports respectively. For ease of understanding, the following explanation uses the optical path propagation between the N first optical ports and the N second optical ports as an example:

[0069] In one example, as shown in Figure 4A, if the N optical ports are arranged in a straight line, then the first optical port 1 on the side of the optical transmitter 02 corresponds to the second optical port N on the side of the common terminal 04. That is, the laser emitted by the first optical port 1 on the side of the optical transmitter 02 reaches the second optical port N on the side of the common terminal 04 after passing through the optical circulator 01; the first optical port 2 on the side of the optical transmitter 02 corresponds to the second optical port (N-1) on the side of the common terminal 04. That is, the laser emitted by the first optical port 2 on the side of the optical transmitter 02 reaches the second optical port (N-1) on the side of the common terminal 04 after passing through the optical circulator 01; the first optical port 3 on the side of the optical transmitter 02 corresponds to the second optical port (N-2) on the side of the common terminal 04. That is, the laser emitted by the first optical port 3 on the side of the optical transmitter 02 reaches the second optical port (N-2) on the side of the common terminal 04 after passing through the optical circulator 01; and so on.

[0070] In another example, the N optical ports are arranged in an array of n rows and m columns, as shown in Figure 4B. Taking n=4 and m=2 as an example, the first optical port 1 on the optical transmitter 02 side corresponds to the second optical port 4 on the common end 04 side, the first optical port 2 on the optical transmitter 02 side corresponds to the second optical port 3 on the common end 04 side, the first optical port 3 on the optical transmitter 02 side corresponds to the second optical port 2 on the common end 04 side, the first optical port 4 on the optical transmitter 02 side corresponds to the second optical port 1 on the common end 04 side, the first optical port 5 on the optical transmitter 02 side corresponds to the second optical port 8 on the common end 04 side, the first optical port 6 on the optical transmitter 02 side corresponds to the second optical port 7 on the common end 04 side, the first optical port 7 on the optical transmitter 02 side corresponds to the second optical port 6 on the common end 04 side, and the first optical port 8 on the optical transmitter 02 side corresponds to the second optical port 5 on the common end 04 side.

[0071] Further, Figures 5A, 5B, or 5C are another example diagram of the optical transceiver assembly provided in the embodiments of this application. Figure 5A illustrates the internal structure and working principle of the optical circulator 01 in the transmission direction, while Figures 5B and 5C illustrate the internal structure and working principle of the optical circulator 01 in the reception direction. As shown in Figures 5A, 5B, or 5C, the optical circulator 01 includes a first polarization beamsplitter 014, a second polarization beamsplitter 015, a Faraday rotator 016, and a half-wave plate 017. The Faraday rotator 016 is arranged adjacent to the half-wave plate 017. The first polarization beamsplitter 014 and the second polarization beamsplitter 015 are located on opposite sides of the Faraday rotator 016 and the half-wave plate 017, respectively. The first polarization beamsplitter 014 is closer to the first port, and the second polarization beamsplitter 015 is closer to the second port. A polarization beam splitter (PBS) has a splitting surface and a reflecting surface. The splitting surface only allows laser light with a specific polarization direction to pass through and reflects laser light that cannot pass through it. The reflecting surface reflects the laser light. For example, the first polarization beam splitter 014 includes a first splitting surface and a first reflecting surface, and the second polarization beam splitter 015 includes a second splitting surface and a second reflecting surface. A Faraday rotator (FR) is an optical device that utilizes the non-reciprocity of magneto-optical materials to rotate the polarization planes of both forward and reverse incident light of the same wavelength in the same direction by the same angle, regardless of the beam propagation direction. A half-wave plate (HWP), also known as a half-wave plate, is a birefringent crystal with a certain thickness. When normally incident light passes through it, the phase difference between the ordinary ray (o-ray) and the extraordinary ray (e-ray) is equal to π or an odd multiple thereof.

[0072] In the transmission direction, the first polarization beam splitter 014 is used to separate the N collimated laser beams from the first port into N beams of first polarized light and / or N beams of second polarized light, wherein the polarization direction of the first polarized light is different from that of the second polarized light. The Faraday rotator 016 and the half-wave plate 017 are used to rotate the polarization direction of the first polarized light to obtain a third polarized light, and / or rotate the polarization direction of the second polarized light to obtain a fourth polarized light, wherein the polarization direction of the third polarized light is the same as that of the second polarized light, and the polarization direction of the fourth polarized light is the same as that of the first polarized light. The second polarization beam splitter 015 is used to combine the N beams of third polarized light and the N beams of fourth polarized light into N collimated laser beams, which are emitted along the second port 012.

[0073] Optionally, the polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light. Since the polarization direction of the third polarized light is the same as that of the second polarized light, and the polarization direction of the fourth polarized light is the same as that of the first polarized light, the polarization direction of the third polarized light is perpendicular to that of the fourth polarized light. For example, if the first and second polarized lights are S (senkrecht) light and P (parallel) light, respectively, then the third and fourth polarized lights are P light and S light, respectively. Here, the S light, i.e., S-polarized light, has a polarization direction perpendicular to the plane of incidence; the P light, i.e., P-polarized light, has a polarization direction within the plane formed by the normal to the incident light ray (i.e., the plane of incidence).

[0074] It should be noted that the polarization direction of the first polarized light can be any polarization direction. The polarization directions of the first polarized light, the second polarized light, the third polarized light, and the fourth polarized light only need to satisfy the aforementioned constraints. This embodiment will not list examples one by one.

[0075] It should also be noted that when the N laser beams include first-polarized light and second-polarized light, the first-polarized light and second-polarized light can originate from the same optical port or from different optical ports. In one example, the N laser beams originate from N first optical ports, and the laser emitted from each first optical port includes both first-polarized light and second-polarized light. In another example, r of the N first optical ports emit r beams of first-polarized light, and the remaining (Nr) of the N first optical ports emit (Nr) beams of second-polarized light, where r is an integer greater than 0.

[0076] In one example, if the N collimated laser beams from the first port include first polarized light and second polarized light, the propagation path of the N laser beams in the optical circulator 01 can be as shown in Figure 5A. In the example shown in Figure 5A, from the direction of the first lens 05 to the second lens 06, the optical circulator 01 is sequentially provided with a first polarization beam splitter 014, a Faraday rotator 016, a half-wave plate 017, and a second polarization beam splitter 015. The N collimated laser beams entering the optical circulator 01 from the first port 011 are split into N S-beams and N P-beams at the beam-splitting interface (i.e., the first beam-splitting surface) of the first polarization beam splitter 014. The N S-beams are reflected by the first beam-splitting surface to the reflecting surface (i.e., the first reflecting surface) of the first polarization beam splitter 014, and then, after being reflected by the first reflecting surface, they enter the Faraday rotator 016 and then the half-wave plate 017 along a first direction (e.g., from the direction of the Faraday rotator 016 to the half-wave plate 017, i.e., from left to right). The N beams of S-beams, after entering the Faraday rotator 016, have their polarization direction rotated 45° clockwise. Upon entering the half-wave plate 017, their polarization direction rotates again by 45° clockwise, resulting in N beams of P-beams. In other words, after passing through the Faraday rotator 016 and the half-wave plate 017 sequentially, the N beams of S-beams are transformed into P-beams. Furthermore, the N beams of P-beams separated from the first beam-splitting surface also enter the Faraday rotator 016 along the first direction before entering the half-wave plate 017. After entering the Faraday rotator 016, their polarization direction rotates 45° clockwise. Upon entering the half-wave plate 017, their polarization direction rotates again by 45° clockwise, resulting in N beams of S-beams. In other words, after passing through the Faraday rotator 016 and the half-wave plate 017 sequentially, the N beams of P-beams are transformed into S-beams. The N-beam S-beam emitted from the half-wave plate 017 is reflected by the reflecting surface (i.e., the second reflecting surface) of the second polarization beam splitter 015 to the splitting surface (i.e., the second splitting surface) of the second polarization beam splitter 015. The N-beam S-beam is reflected twice by the second splitting surface and combined with the N-beam P-beam. The combined mixed biased light is then converged by the second lens 06 and enters the common end 04.

[0077] In another example, if the N collimated laser beams from the first port 011 consist of only one polarization direction (e.g., P-beam), the propagation path of the N laser beams in the optical circulator 01 can be as shown in Figure 6. In the example shown in Figure 6, from the first lens 05 to the second lens 06, the optical circulator 01 is sequentially provided with a first polarization beam splitter 014, a Faraday rotator 016, a half-wave plate 017, and a second polarization beam splitter 015. N collimated beams (including only P-beams) entering the optical circulator 01 from the first port 011 pass through the beam-splitting interface (i.e., the first beam-splitting surface) of the first polarization beam splitter 014 and reach the Faraday rotator 016. Following a first direction (e.g., from the Faraday rotator 016 to the half-wave plate 017, i.e., from left to right), the N P-beams first enter the Faraday rotator 016 and then the half-wave plate 017. After entering the Faraday rotator 016, the polarization direction rotates 45° clockwise, and after entering the half-wave plate 017, the polarization direction rotates again 45° clockwise, resulting in N S-beams. In other words, after passing through the Faraday rotator 016 and the half-wave plate 017 sequentially, the N P-beams are transformed from P-beams into S-beams. The N-beams of S-beams emitted from the half-wave plate 017 are reflected by the reflecting surface (i.e., the second reflecting surface) of the second polarization beam splitter 015 to the splitting surface (i.e., the second splitting surface) of the second polarization beam splitter 015. The N-beams of S-beams are reflected twice by the second splitting surface and converged by the second lens 06 before entering the common end 04.

[0078] In another example, if the N collimated laser beams from the first port 011 consist of only one polarization direction (e.g., S-beam), the propagation path of the N laser beams in the optical circulator 01 can be as shown in Figure 7. In the example shown in Figure 7, from the first lens 05 to the second lens 06, the optical circulator 01 is sequentially provided with a first polarization beam splitter 014, a Faraday rotator 016, a half-wave plate 017, and a second polarization beam splitter 015. The N collimated laser beams (consisting only of S-beams) entering the optical circulator 01 from the first port 011 are reflected by the first beam splitting surface to the reflecting surface (i.e., the first reflecting surface) of the first polarization beam splitter 014. Then, after being reflected by the first reflecting surface, they travel along a first direction (e.g., from the direction of the Faraday rotator 016 to the half-wave plate 017, i.e., from left to right) first entering the Faraday rotator 016 and then the half-wave plate 017. The N beams of S-beams enter the Faraday rotator 016 and their polarization direction rotates 45° clockwise. After entering the half-wave plate 017, their polarization direction rotates again by 45° clockwise, resulting in N beams of P-beams. In other words, the N beams of S-beams are transformed into P-beams after passing through the Faraday rotator 016 and the half-wave plate 017 in sequence. The N beams of P-beams pass through the second beam-splitting surface and are output from the second port 012. They are then converged by the second lens 06 and enter the common port 04.

[0079] It should be noted that in the examples shown in Figures 5A, 6, and 7, the positions of the Faraday rotator 016 and the half-wave plate 017 can be interchanged. In this case, as the N beams of S-beams pass through the half-wave plate 017 and the Faraday rotator 016 in sequence, they will undergo two counterclockwise 45° rotations, changing from S-beams to P-beams; similarly, as the N beams of P-beams pass through the half-wave plate 017 and the Faraday rotator 016 in sequence, they will undergo two counterclockwise 45° rotations, changing from P-beams to S-beams.

[0080] In the receiving direction, the second polarization beam splitter 015 is used to separate the N collimated laser beams from the second port 012 into N fifth-polarized beams and / or N sixth-polarized beams, the polarization directions of the fifth-polarized beams being different from those of the sixth-polarized beams. The half-wave plate 017 and the Faraday rotator 016 are used to rotate the polarization direction of the fifth-polarized beam to obtain a seventh-polarized beam, and / or rotate the polarization direction of the sixth-polarized beam to obtain an eighth-polarized beam, the polarization direction of the seventh-polarized beam being the same as that of the fifth-polarized beam, and the polarization direction of the eighth-polarized beam being the same as that of the sixth-polarized beam. The first polarization beam splitter 014 is used to combine the N seventh-polarized beams and the N eighth-polarized beams into N collimated laser beams, which are emitted along the third port.

[0081] Optionally, the polarization direction of the fifth polarized light is perpendicular to the polarization direction of the sixth polarized light. Since the polarization direction of the seventh polarized light is the same as that of the sixth polarized light, and the polarization direction of the eighth polarized light is the same as that of the fifth polarized light, the polarization direction of the seventh polarized light is perpendicular to that of the eighth polarized light. For example, if the fifth and sixth polarized lights are S-light and P-light respectively, then the seventh and eighth polarized lights are P-light and S-light respectively.

[0082] It should be noted that the polarization direction of the fifth polarized light can be any polarization direction. The polarization directions of the fifth, sixth, seventh, and eighth polarized light only need to satisfy the aforementioned constraints. This embodiment will not list examples one by one.

[0083] In one example, if the N collimated laser beams include N fifth-polarized beams and N sixth-polarized beams, the propagation path of the N laser beams in the optical circulator 01 can be as shown in Figure 5B. The internal structure of the optical circulator 01 shown in Figure 5B is the same as that shown in the example in Figure 5A. In the example shown in Figure 5B, the N collimated beams entering the optical circulator 01 from the second port 012 are split into N S-beams and N P-beams at the beam-splitting interface (i.e., the second beam-splitting surface) of the second polarization beam splitter 015. The N S-beams are reflected by the second beam-splitting surface to the reflecting surface (i.e., the second reflecting surface) of the second polarization beam splitter 015, and then, after being reflected by the second reflecting surface, they enter the half-wave plate 017 and then the Faraday rotator 016 along the second direction (e.g., from the half-wave plate 017 to the Faraday rotator 016, i.e., from right to left). The N beams of S-beams, after entering the half-wave plate 017, have their polarization direction rotated 45° clockwise. After entering the Faraday rotator 016, their polarization direction rotates 45° counterclockwise, remaining N beams of S-beams. In other words, after passing through the half-wave plate 017 and the Faraday rotator 016 sequentially, the S-beams remain unchanged. Furthermore, the N beams of P-beams separated from the second beam-splitting surface also enter the half-wave plate 017 along the second direction before entering the Faraday rotator 016. After entering the half-wave plate 017, their polarization direction rotates 45° clockwise. After entering the Faraday rotator 016, their polarization direction rotates 45° counterclockwise, remaining unchanged. In other words, after passing through the half-wave plate 017 and the Faraday rotator 016 sequentially, the P-beams remain unchanged. The N-beam P-beam emitted from the Faraday rotator 016 is reflected by the reflecting surface (i.e., the first reflecting surface) of the first polarization beam splitter 014, and the N-beam S-beam emitted from the Faraday rotator 016 is reflected by the splitting surface (i.e., the first splitting surface) of the first polarization beam splitter 014, and then combined with the N-beam P-beam. The combined laser beam is reflected by the third reflecting surface and then emitted from the third port 013 of the optical circulator 01. After being focused by the third lens 07, it enters the optical receiver 03.

[0084] Furthermore, when the third port 013 and the first port 011 are respectively located on different planes, the optical circulator 01 can be as shown in Figure 5C. The internal structure of the optical circulator 01 shown in Figure 5C is basically the same as that of the optical circulator 01 shown in Figure 5B, the difference being the different position of the third port 013, thus Figure 5C lacks the third reflecting surface compared to Figure 5B. This allows for setting the port position based on the application scenario requirements of the optical circulator 01, thereby improving the flexibility of the optical circulator 01's position setting in the light-emitting and receiving component 00.

[0085] It should also be noted that in the examples shown in Figure 5B or Figure 5C, the positions of the Faraday rotator 016 and the half-wave plate 017 can be interchanged. In this case, as the N beams of S light pass through the half-wave plate 017 and the Faraday rotator 016 in sequence, they will first undergo a 45° counterclockwise rotation and then a 45° clockwise rotation, keeping the S light unchanged; similarly, as the N beams of P light pass through the half-wave plate 017 and the Faraday rotator 016 in sequence, they will first undergo a 45° counterclockwise rotation and then a 45° clockwise rotation, keeping the P light unchanged.

[0086] In this embodiment, the optical transmitter 02, optical receiver 03 and common terminal 04 in the optical transceiver assembly 00 are each provided with multiple optical ports. Furthermore, the three ports of the optical circulator 01 are each provided with three lenses, so that multiple laser signals from multiple optical ports can be introduced into the same optical circulator 01 through the lenses, and thus the propagation of multiple optical signals can be achieved through the same optical circulator 01.

[0087] Furthermore, this application embodiment also provides an optical fiber connector. Figure 8 is a schematic diagram of an optical fiber connector provided in this application embodiment. As shown in Figure 8, the optical fiber connector 80 includes a plurality of transmitting ports 801, a plurality of receiving ports 802, a plurality of common ports 803, and at least one optical transceiver component 00. The optical transceiver component 00 can be implemented using any of the optical transceiver components 00 shown in any of the embodiments in Figures 2, 3, 5A, 5B, 5C, 6, or 7. The number of transmitting ports 801, receiving ports 802, and common ports 803 included in an optical fiber connector 80 is the same, and is also the same as the number of optical ports included in a port of the optical transceiver component 00.

[0088] Optionally, as shown in Figure 2 or Figure 3, if the optical transmitter 02 of the optical transceiver assembly 00 includes N first optical ports, then the fiber optic connector 80 is provided with N transmitting ports 801, and the N first optical ports correspond one-to-one with the N transmitting ports 801; if the optical receiver 03 of the optical transceiver assembly 00 includes N third optical ports, then the fiber optic connector 80 is provided with N receiving ports 802, and the N third optical ports correspond one-to-one with the N receiving ports 802; if the common end 04 of the optical transceiver assembly 00 includes N second optical ports, then the fiber optic connector 80 is provided with N common ports 803, and the N second optical ports correspond one-to-one with the N common ports 803. Here, N is an integer greater than 1.

[0089] In the transmission direction, N transmitting ports 801 are connected to the optical transmitting end 02 of the optical transceiver assembly 00. The N transmitting ports 801 are used to transmit N laser beams to the optical transmitting end 02. The N laser beams pass through the first lens 05, the optical circulator 01, and the second lens 06 to reach the common end 04 of the optical transceiver assembly 00. N common ports 803 are connected to the common end 04 of the optical transceiver assembly 00. The N common ports 803 are used to receive N laser beams from the common end 04.

[0090] In the receiving direction, N common ports 803 are connected to the common terminal 04 of the optical transceiver assembly 00. The N common ports 803 are also used to send N laser beams to the common terminal 04. The N laser beams reach the optical receiving terminal 03 of the optical transceiver assembly 00 via the second lens 06, the optical circulator 01 and the third lens 07. N receiving ports 802 are connected to the optical receiving terminal 03 of the optical transceiver assembly 00. The N receiving ports 802 are used to receive N laser beams from the optical receiving terminal 03.

[0091] In one example, as shown in Figure 9A, the fiber optic connector includes N TX ports (i.e., transmit ports), N RX ports (i.e., receive ports), and N COM ports (i.e., common ports). The TXn and RXn ports form a pair of dual LC male connectors, and the COMn port is a single LC female connector. All fiber optic connectors are mounted on the housing, with the N TX and N RX ports located on the same side of the housing, and the N COM ports located on the other side.

[0092] In another example, as shown in Figure 9B, the fiber optic connector includes N TX ports and N RX ports, which are located on the female side of a multi-fiber push-on (MPO) connector, and N COM ports are located on the male side of the MPO connector.

[0093] In this embodiment, the fiber optic connector can be externally connected to the transceiver end of various optical modules, thereby transforming the optical module transmission link into a single-fiber bidirectional one, which is beneficial for multi-channel multiplexing and reduces costs.

[0094] Furthermore, this application also provides an optical fiber transmission device. This optical fiber transmission device can be understood as an optical fiber connection device with multiple optical transceiver components 00. Figure 10 is an example diagram of the optical fiber transmission device provided in this application embodiment. Exemplarily, this optical transmission device can be a standalone box-type device (e.g., a passive fiber cross-connect box) or it can be inserted into a switch as a network element device.

[0095] As shown in Figure 10, the optical transmission device internally contains m optical transceiver components, where m is an integer greater than 1. These optical transceiver components can be implemented using any of the optical transceiver components 00 shown in any of the embodiments described in Figures 2, 3, 5A, 5B, 5C, 6, or 7. For example, taking m=2, each optical transceiver component includes n TX ports, n RX ports, and n COM ports, resulting in a total of 2n TX ports, 2n RX ports, and 2n COM ports for the optical transmission device. In the transmission direction, taking the Tx1 optical path as an example, the Tx1 port transmits an optical signal into the optical transceiver component 1 and outputs it from the COM1 port. In the reception direction, taking the COM1 port as an example, the optical signal enters the optical transceiver component 1 through the COM1 port and is output from the RX1 port.

[0096] In addition, this application embodiment also provides an optical module, which includes the optical transceiver component 00 shown in any one of the embodiments of FIG2, FIG3, FIG5A, FIG5B, FIG5C, FIG6 or FIG7.

[0097] In one embodiment, as shown in FIG11, the optical module includes a digital processing unit, N optical transmitting units, N optical receiving units, an optical fiber interface, and a single-fiber bidirectional optical assembly (e.g., the optical transceiver assembly 00 described in the aforementioned embodiment). Electrical signals emitted from the device side are processed by the digital processing unit within the optical module and then loaded onto the N optical transmitting units, converting the N electrical signals into N optical signals. These N optical signals enter the single-fiber bidirectional optical assembly and are transmitted through the optical fiber interface to the N optical fiber interfaces. In the receiving direction, the N optical signals pass through the single-fiber bidirectional optical assembly and enter the N optical receiving units. The optical receiving units convert the optical signals into electrical signals, which are then input to the digital processing unit. Finally, the digital processing unit transmits the received electrical signals to the device side.

[0098] In this embodiment, the fiber optic interface can be a fiber optic connector such as MPO8, MPO12, or MPO16, and this embodiment is not limited to this.

[0099] In another embodiment, as shown in FIG12, the optical module includes a digital processing unit, multiple optical transmitting units, multiple optical receiving units, multiple multiplexers, multiple demultiplexers, a single-fiber bidirectional optical component (e.g., the optical transceiver component 00 described in the foregoing embodiments), and an optical fiber interface.

[0100] For example, consider an optical transmission unit consisting of 8 optical transmitting units, 8 optical receiving units, 2 wavelength division multiplexers, and a single-fiber bidirectional optical component. In the optical transmission direction, the equipment sends multiple electrical signals to a digital processing unit. The digital processing unit outputs 8 electrical signals, which are then converted into 8 optical signals after passing through optical transmitting units 1-8. The wavelengths of the optical signals emitted by optical transmitting units 1-4 are different. For example, the wavelengths of the optical signals emitted by optical transmitting units 1-4 are λ1, λ2, λ3, and λ4, respectively. The wavelengths of the optical signals emitted by optical transmitting units 5-8 are the same as those emitted by optical transmitting units 1-4. Optical transmitting units 1-4 are combined into a single optical signal containing λ1, λ2, λ3, and λ4 by multiplexer 1, and optical transmitting units 5-8 are combined into a single optical signal containing λ1, λ2, λ3, and λ4 by multiplexer 2. Multiplexer 1 and multiplexer 2 output two combined optical signals which enter the single-fiber bidirectional optical component and are transmitted to the optical fiber through the optical fiber interface.

[0101] In the optical receiving direction, two optical signals from the fiber optic interface, containing wavelengths λ1, λ2, λ3, and λ4, enter the single-fiber bidirectional optical component. The two combined signals then enter demultiplexer 1 and demultiplexer 2, respectively. Demultiplexer 1 splits the first combined signal into four optical signals with wavelengths λ1, λ2, λ3, and λ4, which are received by optical receiving units 1 to 4. Demultiplexer 2 splits the second combined signal into four optical signals with wavelengths λ1, λ2, λ3, and λ4, which are received by optical receiving units 5 to 8. Optical receiving units 1 to 8 convert the eight optical signals into electrical signals, which are then processed by a digital processing unit and sent to the equipment side.

[0102] It should be noted that in this example, the optical transmitting units 1-8 and the multiplexers 1-2 can all be integrated onto a single optical chip, as can the optical receiving units 1-8 and the demultiplexers 1-2. Furthermore, in this example, the optical transmitting unit, optical receiving unit, multiplexer, and demultiplexer are all integrated onto a single optical chip. Examples of each are not listed here.

[0103] It should be noted that the optical emitting unit in this embodiment can be an optical element with photoelectric conversion function, such as a silicon optical modulator or an external modulation laser (EML) modulator. The multiplexer and demultiplexer in this embodiment can be optical elements based on planar waveguide technology, or multiplexers / demultiplexers based on silicon optical waveguides, or spatial optical elements based on dielectric film filters; this embodiment is not limited to any of these.

[0104] Furthermore, embodiments of this application also provide an optical communication device, which includes at least one optical transceiver component 00 shown in any one of the aforementioned embodiments of FIG2, FIG3, FIG5A, FIG5B, FIG5C, FIG6 or FIG7; or, the optical communication device includes at least one optical module, which includes at least one optical transceiver component 00 shown in any one of the aforementioned embodiments of FIG2, FIG3, FIG5A, FIG5B, FIG5C, FIG6 or FIG7.

[0105] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0106] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An optical transceiver component, characterized in that, include: The system comprises an optical circulator, an optical transmitter, an optical receiver, a common terminal, a first lens, a second lens, and a third lens; the first lens is disposed between the optical transmitter and a first port of the optical circulator, the second lens is disposed between the common terminal and a second port of the circulator, and the third lens is disposed between the optical receiver and a third port of the optical circulator; the optical transmitter has N first optical ports, the common terminal has N second optical ports, and the optical receiver has N third optical ports; The optical emitting end emits N laser beams through the N first optical ports, where N is an integer greater than 1; The first lens is used to process the N laser beams into N collimated beams and project the N collimated beams onto the first port of the optical circulator; The optical circulator is used to propagate the N collimated beams to the second port of the optical circulator; The second lens is used to converge the N collimated beams emitted from the second port into N laser beams; The common terminal receives the N laser beams through the N second optical ports respectively, and the common terminal is used to connect to optical fibers; The common terminal is also used to emit N laser beams through the N second optical ports; The second lens is used to process the N laser beams from the second optical port into N collimated beams, and to project the N collimated beams onto the second port of the optical circulator; The optical circulator is used to propagate the N collimated beams to the third port of the optical circulator; The third lens is used to converge the N collimated beams emitted from the third port into N laser beams; The optical receiver receives the N laser beams through the N third optical ports respectively.

2. The optical transceiver assembly according to claim 1, characterized in that, The arrangement of the N first optical ports at the optical transmitter is the same as the arrangement of the N second optical ports at the common end, and the arrangement of the N third optical ports at the optical receiver is the same as the arrangement of the N second optical ports at the common end.

3. The optical transceiver assembly according to claim 2, characterized in that, The N first optical ports are arranged in a straight line, the N second optical ports are arranged in a straight line, and the N third optical ports are arranged in a straight line.

4. The optical transceiver assembly according to claim 2, characterized in that, The N first optical ports are arranged in an array of n rows and m columns, the N second optical ports are arranged in an array of n rows and m columns, and the N third optical ports are arranged in an array of n rows and m columns. Wherein, the product of n and m is equal to N, n is an integer greater than 0, and m is an integer greater than 0.

5. The optical transceiver assembly according to any one of claims 1 to 4, characterized in that, The maximum distance between any two of the N first optical ports is less than the diameter of the first lens; the maximum distance between any two of the N second optical ports is less than the diameter of the second lens; and the maximum distance between any two of the N third optical ports is less than the diameter of the third lens.

6. The optical transceiver assembly according to claim 3, characterized in that, The distance between two adjacent first optical ports is N times smaller than the diameter of the first lens; the distance between two adjacent second optical ports is N times smaller than the diameter of the second lens; the distance between two adjacent third optical ports is N times smaller than the diameter of the third lens.

7. The optical transceiver assembly according to any one of claims 1 to 6, characterized in that, The angle between the propagation direction of the laser emitted from the first optical port and the principal optical axis of the first lens is less than or equal to 7°; the angle between the propagation direction of the laser emitted from the second optical port and the principal optical axis of the second lens is less than or equal to 7°; and the angle between the propagation direction of the laser emitted from the third optical port and the principal optical axis of the third lens is less than or equal to 7°.

8. The optical transceiver assembly according to any one of claims 1 to 7, characterized in that, The optical circulator includes a first polarization beamsplitter, a second polarization beamsplitter, a Faraday rotator, and a half-wave plate. The Faraday rotator is arranged adjacent to the half-wave plate. The first polarization beamsplitter and the second polarization beamsplitter are located on opposite sides of the Faraday rotator and the half-wave plate, respectively. The first polarization beamsplitter is closer to the first port, and the second polarization beamsplitter is closer to the second port.

9. The optical transceiver assembly according to claim 8, characterized in that, The first polarization beam splitter is used to separate the N collimated laser beams from the first port into N first polarized beams and / or N second polarized beams, wherein the polarization direction of the first polarized beams is different from that of the second polarized beams. The Faraday rotator and half-wave plate are used to rotate the polarization direction of the first polarized light to obtain the third polarized light, and / or rotate the polarization direction of the second polarized light to obtain the fourth polarized light. The polarization direction of the third polarized light is the same as that of the second polarized light, and the polarization direction of the fourth polarized light is the same as that of the first polarized light. The second polarization beam splitter is used to combine N beams of third polarized light and / or N beams of fourth polarized light into N beams of collimated laser light, which are emitted along the second port.

10. The optical transceiver assembly according to claim 9, characterized in that, The polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light.

11. The optical transceiver assembly according to claim 8, characterized in that, The second polarization beam splitter is used to separate the N collimated laser beams from the second port into N fifth polarized beams and / or N sixth polarized beams, wherein the polarization direction of the fifth polarized beams is different from that of the sixth polarized beams. The half-wave plate and Faraday rotator are used to rotate the polarization direction of the fifth polarized light to obtain the seventh polarized light, and / or rotate the polarization direction of the sixth polarized light to obtain the eighth polarized light. The polarization direction of the seventh polarized light is the same as that of the fifth polarized light, and the polarization direction of the eighth polarized light is the same as that of the sixth polarized light. The first polarization beam splitter is used to combine N beams of seventh polarized light and / or N beams of eighth polarized light into N beams of collimated laser light, which are emitted along the third port.

12. The optical transceiver assembly according to claim 11, characterized in that, The polarization direction of the fifth polarized light is perpendicular to the polarization direction of the sixth polarized light.

13. An optical fiber connector, characterized in that, include: N transmitting ports, N receiving ports, N common ports, and an optical transceiver component as described in any one of claims 1 to 12, wherein N is an integer greater than 1; The N transmitting ports are connected to the optical transmitter of the optical transceiver assembly. The N transmitting ports are used to transmit N laser beams to the optical transmitter. The N laser beams pass through the first lens, the optical circulator, and the second lens to reach the common terminal of the optical transceiver assembly. The N common ports are connected to the common terminal of the optical transceiver assembly, and the N common ports are used to receive the N laser beams from the common terminal; The N common ports are connected to the common terminal of the optical transceiver assembly. The N common ports are also used to send N laser beams to the common terminal. The N laser beams reach the optical receiving terminal of the optical transceiver assembly through the second lens, the optical circulator, and the third lens. The N receiving ports are connected to the optical receiving end of the optical transceiver assembly, and the N receiving ports are used to receive the N laser beams from the optical receiving end.

14. An optical module, characterized in that, The optical module includes at least one optical transceiver component as described in any one of claims 1 to 12.

Images