Parallel optical transceiver module
By using microlens arrays and filter structures in parallel optical modules and leveraging wavelength division multiplexing (WDM) technology, the problem of large packaging size was solved, and the number of optical fibers was reduced and the modules were miniaturized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HISENSE & JONHON OPTICAL ELECTRICAL TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-17
AI Technical Summary
The packaging size of parallel optical modules is relatively large, mainly due to the large number of optical fibers, which leads to insufficient internal space in the housing.
By employing a microlens array and filter structure and utilizing wavelength division multiplexing technology, beams of different wavelengths can be transmitted in a single optical fiber, reducing the number of optical fibers required.
A small-size package of parallel optical modules was achieved, and the number of optical fibers was reduced by coinciding the propagation paths of different wavelengths in the fiber bandside path segment.
Smart Images
Figure CN224519004U_ABST
Abstract
Claims
1. A parallel optical transceiver module, characterized in that, Includes: casing; and the PCB board disposed within the housing; The fiber optic array unit includes: fiber optic ribbon unit, which includes multiple fiber optic ribbons; A microlens array unit includes: a lens body, wherein a reflective portion is provided on the lens body; And a first lens assembly disposed on the lens body for coupling with the fiber ribbon unit; The second lens assembly is located below the reflective part; and the third lens assembly; The filter element, assembled on the lens body, is capable of transmitting at least a first wavelength light beam and reflecting a second wavelength light beam, and is positioned between the first lens assembly and the inclined portion, above the third lens assembly. The chip unit, which communicates with the PCB board, includes at least: The first processing chip, used to emit or receive a first wavelength beam, has multiple first channels, is located below the second lens assembly, and is optically coupled to the second lens assembly through the multiple first channels; And a second processing chip arranged side by side with the first processing chip, used to receive or emit a second wavelength beam, which is different from the first processing chip and has multiple second channels. It is located below the third lens assembly and is optically coupled to the third lens assembly through multiple second channels. The second processing chip is closer to the first lens assembly than the first processing chip. A first light propagation path is formed between the fiber optic ribbon, filter, reflector, second lens assembly, and first processing chip; A second light propagation path is formed between the fiber optic ribbon, the filter, the third lens assembly, and the second processing chip; The first optical propagation path and the second optical propagation path overlap in the path segment near the fiber optic band.
2. The parallel optical transceiver module according to claim 1, characterized in that, The second lens assembly includes a plurality of second lenses, and the third lens assembly includes a plurality of third lenses. The number of first channels is less than the number of second lenses. The plurality of first channels are optically coupled and positioned with a portion of the plurality of second lenses. The number of second channels is less than the number of third lenses. The plurality of second channels are respectively optically coupled and positioned with a portion of the plurality of third lenses.
3. The parallel optical transceiver module according to claim 2, characterized in that, The filter element is configured to transmit a third wavelength light beam and reflect a second wavelength light beam. The chip unit further includes: a third processing chip, arranged on the same side as the first processing chip, for emitting or receiving a third wavelength beam, having multiple third channels, with the multiple third channels and portions of the multiple second lenses correspondingly coupled and positioned, forming a third light propagation path between the fiber optic ribbon, filter, reflector, second lens assembly and the third processing chip; The fourth processing chip, used to receive or emit a beam of a fourth wavelength, is different from the third processing chip. It is closer to the first lens assembly than the third chip and is located on the same side as the second processing chip. It has multiple fourth channels, which are coupled and positioned in correspondence with multiple third lenses. A fourth light propagation path is formed between the fiber optic strip, the filter, the third lens assembly, and the fourth processing chip. The fourth light propagation path and the third light propagation path overlap at the path segment near the fiber optic strip side.
4. The parallel optical transceiver module of claim 3, wherein the lens is a cylindrical lens. When the first processing chip and the third processing chip are of the same type, there is a first spacing between the first processing chip and the third processing chip; When the first processing chip and the third processing chip are different types of chips, there is a second gap between the first processing chip and the third processing chip, and the second gap is smaller than the first gap. The number of second lenses corresponding to the first processing chip and the third processing chip being spaced at the first spacing is greater than the number of second lenses corresponding to the second spacing between them.
5. The parallel optical transceiver module of claim 1, wherein, Multiple fiber optic array units and multiple chip units are provided, and multiple microlens array units are provided. The multiple microlens array units are respectively connected to multiple fiber optic ribbon units and multiple chip units.
6. The parallel optical transceiver module of claim 1, wherein, The fiber array unit includes: a ferrule, inside which are disposed a plurality of fiber ribbons, the plurality of fiber ribbons being arranged side by side and each being coupled to a plurality of the first lenses.
7. The parallel optical transceiver module of claim 6, wherein the lens is a cylindrical lens. The insert has a positioning hole, and the lens body has a positioning pin that mates with the positioning hole.
8. The parallel optical transceiver module of claim 1, wherein, The lens body has an inclined portion, and the filter element is assembled onto the inclined portion and arranged at an angle of 45 degrees with the horizontal plane.
9. The parallel optical transceiver module of claim 1, wherein, The reflective part is a reflective surface formed on the lens body, and the reflective surface makes an angle of 45 degrees with the horizontal plane.
10. The parallel optical transceiver module of claim 1, wherein, The lens body has a recessed portion on its side, and the first lens assembly is assembled in the recessed portion.