MPO interface-based single fan-in and fan-out multi-channel optical module

An optical module and multi-channel technology, which is applied in the field of optical modules, can solve problems such as interface density bottlenecks, and achieve the effects of cost optimization, reduced preparation difficulty, and saving the amount of external wiring fibers

Active Publication Date: 2021-09-07
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With parallel schemes, interface density can become the main bottleneck
With the wavelength division multiplexing scheme, the number of wavelengths of the laser needs to be increased, and the wavelength interval must be reduced accordingly. The resulting problems of cost and crosstalk will also become the bottleneck of high channel density optical modules.

Method used

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  • MPO interface-based single fan-in and fan-out multi-channel optical module
  • MPO interface-based single fan-in and fan-out multi-channel optical module
  • MPO interface-based single fan-in and fan-out multi-channel optical module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 , figure 2 , image 3 As shown, a new multi-channel optical module includes 48-channel LD module 1 (11-148) arranged in sequence along the optical axis, 96-channel 8-core fiber fan-in and fan-out device 3, eight-core fiber array 4, And the 8-core optical fiber 5 (each core number: 51~58) coupled with the fan-in and fan-out output end of the 8-core optical fiber, and the 8-core optical fiber MPO connector 6 connected with 12 8-core optical fibers. 48-channel LD mode Between the group 1 and the input end of the 96-channel 8-core optical fiber fan-in and fan-out device 3, there are 48 first focusing lenses 2 (numbers 21-248) corresponding to the 48 channels of the LD module, which are used to direct the laser The 48 divergent light sources emitted by the module are converged and coupled to the 48 input ports 349-396 of the fan-in-fan-out device, and enter the six 8-core optical fibers 397-408 from the output end of the fan-in-fan-out device.

[0026] T...

Embodiment 2

[0029] The number of lasers in the laser array in embodiment 2, the number of detectors in the detector array, the number of cores of the multi-core optical fiber and the channel number of fan-in and fan-out devices are all the same as the relevant numbers in embodiment 1, and the number of lasers and detectors The arrangement is a 3*16 rectangular arrangement.

Embodiment 3

[0031] The number of lasers in the laser array, the number of detectors in the detector array, the number of cores of the multi-core optical fiber and the number of channels of the fan-in and fan-out devices in the third embodiment are all twice the relevant numbers in the first embodiment.

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Abstract

The invention discloses a MPO interface-based single fan-in and fan-out multi-channel optical module, and belongs to the technical field of optical modules. The MPO interface-based single fan-in and fan-out multi-channel optical module comprises an LD module with N channels, a multi-core optical fiber fan-in and fan-out device with 2N input ports and 2N/M output ports, 2N/M multi-core optical fibers which are coupled with the output end of the multi-core optical fiber fan-in and fan-out device and are provided with M cores, and a multi-core optical fiber MPO connector which is connected with the 2N/M multi-core optical fibers, and M represents the number of cores of the multi-core optical fiber. According to the invention, compared with a conventional single-core parallel high-density transmission scheme, a high-cost high-density MPO joint does not need to be used. Compared with a wavelength division multiplexing transmission scheme, various lasers with different wavelengths do not need to be used, and the cost and the insertion loss of the fan-in and fan-out device adopted in the invention are lower than those of wavelength division multiplexing and demultiplexing devices. According to the invention, the overall cost is better while the wiring space is saved.

Description

technical field [0001] The invention belongs to the technical field of optical modules, and more specifically relates to a single fan-in and fan-out multi-channel optical module based on an MPO interface. Background technique [0002] At present, high-speed optical modules mainly include SR4, PSM4, SR8, and SR16 for parallel transmission, and CWDM4, LR4, ER4, FR8, LR8, and ER8 for wavelength division multiplexing transmission schemes. Parallel transmission uses parallel transmission of multiple optical fibers to achieve high-speed transmission of a single module. For example, SR4 and PSM4 use 4 optical fibers to receive light and 4 optical fibers to emit light to realize 8-channel transmission and reception. SR8 needs to use 8 receptions and 8 transmissions, a total of 16 optical fibers for parallel transmission, and so on. The parallel solution needs to use high-density MPO connectors to connect with optical modules. The higher the number of channels, the higher the densit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42G02B6/26H04B10/25H04B10/50
CPCG02B6/4206G02B6/262H04B10/25H04B10/503
Inventor 兰小波邓兰李颖姚钊毛明锋褚俊沈磊张磊
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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