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CN-122018088-A - Pluggable optical connection structure

CN122018088ACN 122018088 ACN122018088 ACN 122018088ACN-122018088-A

Abstract

The application discloses a pluggable optical connection structure which comprises a first connector fixedly arranged on one side of an optical chip module, wherein the first connector comprises a first light-transmitting connection part and a first super-structure lens group, the first light-transmitting connection part comprises a first surface and a second surface, the first surface is provided with the first super-structure lens group, the first super-structure lens group is used for performing wave front correction and collimation treatment on outgoing beams of the optical chip module, the second connector comprises a movable connector body and a second super-structure lens group, the movable connector body comprises a first end and a second end, the first end is connected with an optical fiber assembly, the second end is provided with the second super-structure lens group, the second end is used for performing pluggable connection with the second surface, and the second super-structure lens group is used for performing collimation and beam expansion treatment on the outgoing beams of the second surface so as to be coupled to an optical fiber. According to the technical scheme, the coupling tolerance of the pluggable optical connection structure can be greatly expanded, so that the plugging and butting difficulty of the pluggable optical connection structure is reduced.

Inventors

  • CHENG FENG

Assignees

  • 深圳菲微欣科技有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. A pluggable optical connection structure is characterized in that the pluggable optical connection structure comprises a first connector and a second connector, wherein, The first connector is fixedly arranged on one side of the optical chip module and comprises a first light-transmitting connecting part and a first super-structure lens group, the first light-transmitting connecting part comprises a first surface and a second surface, the first surface is provided with the first super-structure lens group, and the first super-structure lens group is used for performing wave-front correction and collimation treatment on outgoing light beams of the optical chip module; The second connector comprises a movable connector body and a second super-structure lens group, wherein the movable connector body comprises a first end and a second end, the first end is connected with the optical fiber assembly, the second end is provided with the second super-structure lens group, the second end is arranged to be connected with the second surface in a pluggable manner, and the second super-structure lens group is arranged to perform collimation and beam expansion treatment on outgoing beams on the second surface so as to be coupled to the optical fiber assembly.
  2. 2. The pluggable optical connection structure of claim 1, wherein a side of the first super-structure lens group facing away from the first surface is in adhesive connection with an optical port area of the optical chip module.
  3. 3. The pluggable optical connection structure of claim 2, wherein the side of the first super-structure lens group facing away from the first surface is bonded to the optical port area of the optical chip module by a low-temperature glue bonding structure.
  4. 4. The pluggable optical connection structure according to claim 3, wherein the thickness of the adhesive glue between the side of the first super-structured lens group facing away from the first surface and the optical port area of the optical chip module is 1 μm to 10 μm.
  5. 5. The pluggable optical connection structure of claim 2, wherein the side of the first super-structure lens group facing away from the first surface is bonded to the optical port area of the optical chip module by a low-temperature bonding structure.
  6. 6. The pluggable optical connection structure according to claim 1, wherein the first super-structure lens group comprises a first glass substrate and a plurality of first super-structure lens units, and the plurality of first super-structure lens units are in one-to-one correspondence with a plurality of optical ports of the optical port area of the optical chip module; the first super-structure lens unit comprises two first nano-pillar arrays, and the two first nano-pillar arrays are respectively prepared on the two side surfaces of the first glass substrate through photoetching and ion etching processes.
  7. 7. The pluggable optical connection structure according to claim 6, wherein the first nanopillar array includes a plurality of first nanopillars arranged in an array, the period of the first nanopillar array is 300nm to 700nm, the height of the first nanopillar is 300nm to 790 nm, the diameter of the first nanopillar is 100 nm to 500 nm, and the first super-structured lens unit is further configured to implement wavefront correction and collimation of the corresponding light beam by performing phase modulation between 0 to 2 pi by the diameter variation of each of the two first nanopillars of the two first nanopillar arrays.
  8. 8. The pluggable optical connection structure of claim 6, wherein the second end is a second light-transmitting connection portion, the second super-structure lens group being disposed on a side surface of the second light-transmitting connection portion facing away from the first end; The second light-transmitting connecting part is provided with at least two positioning pins in a protruding mode on the surface of one side, facing away from the first end, of the second light-transmitting connecting part, at least two positioning grooves are concavely formed in the second surface or at least two positioning holes are formed in the second surface, and the second light-transmitting connecting part is connected with the second surface in a pluggable mode through one-to-one corresponding insertion and connection between the at least two positioning pins and the at least two positioning grooves or the at least two positioning holes, and the second super-structured lens group is made to cling to the second surface.
  9. 9. The pluggable optical connection structure of claim 8, wherein the second super-structure lens group includes a second glass substrate and a plurality of second super-structure lens units, the plurality of second super-structure lens units being in one-to-one correspondence with the plurality of first super-structure lens units; The second super-structure lens unit comprises two second nano-pillar arrays, and the two second nano-pillar arrays are respectively prepared on the two side surfaces of the second glass substrate through photoetching and ion etching processes.
  10. 10. The pluggable optical connection structure according to claim 9, wherein the second nanopillar array includes a plurality of second nanopillars arranged in an array, the period of the second nanopillar array is 300nm to 700nm, the height of the second nanopillar is 300nm to 790 nm, the diameter of the second nanopillar is 100 nm to 500 nm, the second super-structured lens unit is further arranged to implement a collimated beam expanding process of the corresponding light beam by respectively performing phase modulation between 0 to 2 pi by the diameter variation of each of the second nanopillars of the two second nanopillar arrays, The movable connector body is an MT optical fiber connector or an LC optical fiber connector.

Description

Pluggable optical connection structure Technical Field The present application relates to the field of optical connection technologies, and in particular, to a pluggable optical connection structure. Background With the explosive growth of data traffic, CPO (Co-packaged Optics ) is the next generation of data center interconnection core technology because of the low power consumption and high bandwidth advantage achieved by Co-packaging the optical engine and the switch chip. The pluggable optical connection structure is used as a key component of the CPO, and bears the connection function of the optical chip module and an external optical fiber link, and the performance of the pluggable optical connection structure directly determines the mass production feasibility and reliability of the CPO. In the related art, the existing pluggable optical connection structure mainly comprises a fixed connector and a movable connector, wherein the fixed connector is fixedly arranged on one side of the optical chip module so as to be connected with an emergent light beam of an optical port area of the optical chip module, the movable connector is mainly a physical contact type connector based on a traditional ceramic contact pin (such as an LC optical fiber connector and an MT optical fiber connector), and the core of the technology is a precise insert core made of zirconium dioxide (ZrO 2) material, and the insert core end face of the movable connector is tightly abutted with the insert core end face of the fixed connector so as to realize low-loss transmission of optical signals. However, this technique presents a fundamental bottleneck in that pluggable optical connectors require very stringent accuracy in the lateral (radial) alignment between the ferrule end face of the movable connector and the ferrule end face of the fixed connector, typically to the submicron level, for low insertion loss and low return loss. This ultra-high precision alignment requirement results in an inability to use efficient, low cost passive alignment processes during production assembly, and the necessity of relying on high precision active alignment equipment. In the active alignment process, the optical power needs to be monitored in real time, the fiber core position is dynamically adjusted to be in an optimal state and then fixed, the assembly working hours of a single device in the process are obviously prolonged, and the production efficiency is severely restricted. Disclosure of Invention The application aims to provide a pluggable optical connection structure, which aims to solve the problems that the existing optical connection scheme has strict requirements on the transverse (radial) alignment precision between a fixed connector and a movable connector and is highly dependent on active alignment equipment. To this end, embodiments of the present application provide a pluggable optical connection structure, comprising a first connector and a second connector, wherein, The first connector is fixedly arranged on one side of the optical chip module and comprises a first light-transmitting connecting part and a first super-structure lens group, the first light-transmitting connecting part comprises a first surface and a second surface, the first surface is provided with the first super-structure lens group, and the first super-structure lens group is used for performing wave-front correction and collimation treatment on outgoing light beams of the optical chip module; The second connector comprises a movable connector body and a second super-structure lens group, wherein the movable connector body comprises a first end and a second end, the first end is connected with the optical fiber assembly, the second end is provided with the second super-structure lens group, the second end is arranged to be connected with the second surface in a pluggable manner, and the second super-structure lens group is arranged to perform collimation and beam expansion treatment on outgoing beams on the second surface so as to be coupled to the optical fiber assembly. Optionally, in some embodiments of the present application, a side of the first super-structure lens group facing away from the first surface is attached to the optical port area of the optical chip module. Optionally, in some embodiments of the present application, a side of the first super-structure lens group facing away from the first surface is attached to the optical port area of the optical chip module by a low-temperature glue bonding structure. Optionally, in some embodiments of the present application, a thickness of the adhesive glue between a side of the first super-structure lens group facing away from the first surface and the optical port area of the optical chip module is 1 μm to 10 μm. Optionally, in some embodiments of the present application, a side of the first super-structure lens group facing away from the first surface is bonded to the optical port area of the optical