CN-122018094-A - Optical transceiver assembly, optical fiber connector and optical module

CN122018094ACN 122018094 ACN122018094 ACN 122018094ACN-122018094-A

Abstract

The application provides an optical transceiver component, an optical fiber connector and an optical module, wherein lenses are arranged at three ports of an optical circulator, so that a plurality of laser beams emitted by a plurality of optical ports of a transmitting end can be collimated into collimated light through the lenses, and the collimated light beams share the optical circulator to carry out optical path propagation. The number of optical circulators in the optical transceiver component is saved, and the miniaturization design of the optical transceiver component is facilitated.

Inventors

LENG LEMENG
LIU WEI
ZHOU ZHAOTAO
SONG XIAOLU

Assignees

华为技术有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (14)

1. An optical transceiver module, comprising: The optical circulator comprises an optical circulator, an optical emission end, an optical receiving end, a public end, a first lens, a second lens and a third lens, wherein the first lens is arranged between the optical emission end and a first port of the optical circulator, the second lens is arranged between the public end and a second port of the circulator, the third lens is arranged between the optical receiving end and a third port of the optical circulator; The light emitting end emits N laser beams through the N first light ports, wherein N is an integer greater than 1; The first lens is used for processing the N laser beams into N collimated light beams and projecting the N Shu Zhunzhi light beams to the first port of the optical circulator; the optical circulator is configured to propagate the N beams of collimated light to the second port of the optical circulator; the second lens is used for converging the N Shu Zhunzhi light emitted from the second port into N laser beams; the public end receives the N laser beams through the N second optical ports respectively, and the public end is used for connecting optical fibers; the public end is also used for emitting N laser beams through the N second optical ports; The second lens is used for processing the N laser beams from the second optical port into N collimated light beams and projecting the N Shu Zhunzhi light beams to the second port of the optical circulator; the optical circulator is configured to propagate the N beams of collimated light to the third port of the optical circulator; the third lens is used for converging the N Shu Zhunzhi light emitted by the third port into N laser beams; The light receiving end receives the N laser beams through the N third light ports respectively.
2. The optical transceiver module of claim 1, wherein the arrangement of the N first optical ports at the optical transmitting end 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 receiving end is the same as the arrangement of the N second optical ports at the common end.
3. The optical transceiver of claim 2, wherein 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 of claim 2, wherein 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 module of any one of claims 1-4, wherein a maximum value of a distance between any two of the N first optical ports is smaller than a diameter of the first lens, a maximum value of a distance between any two of the N second optical ports is smaller than a diameter of the second lens, and a maximum value of a distance between any two of the N third optical ports is smaller than a diameter of the third lens.
6. The optical transceiver of claim 3, wherein N times the spacing between adjacent two of the first optical ports is less than the diameter of the first lens, N times the spacing between adjacent two of the second optical ports is less than the diameter of the second lens, and N times the spacing between adjacent two of the third optical ports is less than the diameter of the third lens.
7. The optical transceiver module of any one of claims 1-6, wherein an angle between a propagation direction of the laser light emitted from the first optical port and a main optical axis of the first lens is less than or equal to 7 °, an angle between a propagation direction of the laser light emitted from the second optical port and a main optical axis of the second lens is less than or equal to 7 °, and an angle between a propagation direction of the laser light emitted from the third optical port and a main optical axis of the third lens is less than or equal to 7 °.
8. The optical transceiver assembly of any one of claims 1-7, wherein the optical circulator comprises a first polarizing beam splitter, a second polarizing beam splitter, a faraday rotator and a half-wave plate, the faraday rotator being disposed adjacent to the half-wave plate, the first polarizing beam splitter and the second polarizing beam splitter being located on either side of the faraday rotator and the half-wave plate, respectively, the first polarizing beam splitter being proximate to the first port and the second polarizing beam splitter being proximate to the second port.
9. The optical transceiver module of claim 8, wherein, The first polarization beam splitter is used for separating the N beams of collimated laser light from the first port into N beams of first polarized light and/or N beams of second polarized light, and the polarization direction of the first polarized light is different from that of the second polarized light; The Faraday rotator and the half-wave plate are used for rotating the polarization direction of the first polarized light to obtain third polarized light, and/or rotating the polarization direction of the second polarized light to obtain fourth polarized light, wherein the polarization direction of the third polarized light is the same as the polarization direction of the second polarized light, and the polarization direction of the fourth polarized light is the same as the polarization direction of the first polarized light; The second polarization beam splitter is used for combining the N beams of third polarized light and/or the N beams of fourth polarized light into N beams of collimated laser, and the N beams of collimated laser are emitted along the second port.
10. The optical transceiver assembly of claim 9, wherein the polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light.
11. The optical transceiver module of claim 8, wherein, The second polarization beam splitter is used for separating the N beams of collimated laser light from the second port into N beams of fifth polarized light and/or N beams of sixth polarized light, and the polarization direction of the fifth polarized light is different from that of the sixth polarized light; The half-wave plate and the Faraday rotator are used for rotating the polarization direction of the fifth polarized light to obtain seventh polarized light, and/or rotating the polarization direction of the sixth polarized light to obtain eighth polarized light, wherein the polarization direction of the seventh polarized light is the same as the polarization direction of the fifth polarized light, and the polarization direction of the eighth polarized light is the same as the polarization direction of the sixth polarized light; the first polarization beam splitter is used for combining the N beams of seventh polarized light and/or the N beams of eighth polarized light into N beams of collimated laser, and the N beams of collimated laser are emitted along the third port.
12. The optical transceiver module of claim 11, wherein the polarization direction of the fifth polarized light is perpendicular to the polarization direction of the sixth polarized light.
13. An optical fiber connector, comprising: N transmit ports, N receive ports, N common ports, and an optical transceiver assembly as set forth in any one of claims 1 to 12, N being an integer greater than 1; the N sending ports are connected with the light emitting end of the light receiving and transmitting assembly, the N sending ports are used for sending N laser beams to the light emitting end, and the N laser beams reach the public end of the light receiving and transmitting assembly through the first lens, the light circulator and the second lens; The N public ports are connected with the public end of the optical transceiver component and are used for receiving the N laser beams from the public end; the N public ports are connected with the public end of the optical transceiver component, the N public ports are also used for sending N laser beams to the public end, and the N laser beams reach the optical receiving end of the optical transceiver component through the second lens, the optical circulator and the third lens; The N receiving ports are connected with the light receiving end of the light receiving and transmitting assembly and are used for receiving the N laser beams from the light receiving end.
14. An optical module comprising at least one optical transceiver assembly as claimed in any one of claims 1 to 12.

Description

Optical transceiver assembly, optical fiber connector and optical module Technical Field The embodiment of the application relates to the field of optical communication, in particular to an optical transceiver component, an optical fiber connector and an optical module. Background In optical fiber communication, for bidirectional transmission of single fibers with the same wavelength, a three-port optical circulator (also referred to as a circulator) is introduced, so that a transmission optical signal and a reception optical signal with the same wavelength in an optical transceiver assembly can be transmitted in a bidirectional manner on the same optical fiber. As shown in fig. 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), respectively. Each optical circulator is provided with 3 ports, and the 3 ports are respectively connected with a transmitting end of the transceiver, a receiving end of the transceiver and a single-fiber bidirectional optical fiber. The transmitting end 1 of the transceiver 1 is connected with the port 1 of the optical circulator 1, the optical circulator 1 is connected with a single-fiber bidirectional optical fiber, and an optical signal output by the transmitting end 1 is input into the optical circulator 1 through the port 1 and then output to the optical fiber through the port 2. The optical signal transmitted through the optical fiber is input into the optical circulator 2 from the port 2 and then output to the receiving end 2 of the transceiver 2 through the port 3. The transmitting end 2 of the transceiver 2 is connected with the port 1 of the optical circulator 2, the optical circulator 2 is connected with a single-fiber bidirectional optical fiber, and an optical signal output by the transmitting end 2 is input into the optical circulator 2 through the port 1 and then output to the optical fiber through the port 2. The optical signal transmitted through the optical fiber is input into the optical circulator 1 from the port 2 and then output to the receiving end 1 of the transceiver 1 through the port 3. Therefore, one transceiver is matched with one optical circulator, two optical fibers originally used for transmitting and receiving optical fibers can be reduced to one optical fiber through the optical circulator, the communication capacity of single optical fibers can be improved, and the number of fiber distribution is reduced. However, when the optical module includes two or more transceiving optical paths, two or more independent optical circulators are also required to be provided in the optical module, and thus, miniaturization of the optical module is not facilitated. Disclosure of Invention The application provides an optical transceiver component, an optical fiber connector and an optical module, which are used for realizing the transceiver steering of a plurality of optical paths through one optical circulator in the same optical component, and are beneficial to the miniaturization of the optical component. In a first aspect, an embodiment of the present application provides an optical transceiver module, where the optical transceiver module includes an optical circulator, an optical transmitting end, an optical receiving end, a common end, and at least three lenses, the optical circulator is provided with three ports, the three ports are respectively provided with the optical transmitting end, the optical receiving end, and the common end, a first lens is provided between the optical transmitting end and a first port of the optical circulator, a second lens is provided between the common end and a second port of the optical circulator, and a third lens is provided between the optical receiving end and a third port of the optical circulator. The light emitting end is provided with N first light ports, the public end is provided with N second light ports, and the light receiving end is provided with N third light ports. The optical transmission end transmits N laser beams through N first optical ports in the transmission direction, N is an integer larger than 1, the first lens is used for processing the N laser beams into N collimated light and projecting the N Shu Zhunzhi light to the first port of the optical circulator, the optical circulator is used for transmitting the N collimated light to the second port of the optical circulator, the second lens is used for converging N Shu Zhunzhi light emitted by the second port into N laser beams, the public end receives the N laser beams through the N second optical ports, and the public end is used for connecting single-fiber bidirectional optical fibers. In the receiving direction, the public end is also used for emitting N laser beams through N second optical ports, the second lens is used for processing the N laser beams from the second optical ports into N c