High-performance optical fiber interconnection system

An interconnection system and high-performance technology, which is applied in the field of high-performance optical fiber interconnection systems, can solve problems such as consumption, high power consumption, and high computational complexity, and achieve the effects of reduced linearity requirements, cost savings, and superior sensitivity

Active Publication Date: 2021-06-22
WINGCOMM CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

These schemes often require high computational complexity and consume a lot of power

Method used

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  • High-performance optical fiber interconnection system
  • High-performance optical fiber interconnection system
  • High-performance optical fiber interconnection system

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Embodiment Construction

[0043] Such as figure 1 The high-performance optical communication system solution is as follows: N / 2 (N is an even number greater than or equal to 2) PAM4 signals are first converted into N NRZ signals by a PAM4 decoder, and then converted into N NRZ optical signals by a transmitter and a laser . The NRZ optical signal is converted into N-channel NRZ signals by the photodetector and the receiver, and the N-channel NRZ signals output N / 2-channel PAM4 signals through the PAM4 synthesizer. Compared with the traditional PAM4 receiver, this system has significantly improved sensitivity and performance because the optical signal is NRZ. For example, the traditional 50G PAM4 interface optical receiver transmitter, the electrical signal is 50G PAM4, the optical signal is 50G PAM4, but the electrical signal of this system is 50G PAM4, and the optical signal is 25G NRZ. After the 25G NRZ optical signal passes through the photodetector, the amplitude of the electric eye is three times...

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Abstract

The invention provides a high-performance optical fiber interconnection system. The high-performance optical fiber interconnection system comprises a PAM4 electrical interface, a gearbox, an NRZ optical transmitting and receiving unit and an NRZ signal optical path. An electrical port of the system is N / 2 (N is an even number greater than or equal to 2) PAM4 signals, an optical port of the system is N NRZ signals, and a receiver and a transmitter can process NRZ optical path signals more easily, so that a high-performance interconnection system is realized. Optical path interfaces of a receiver and a transmitter of the system are N paths of NRZ signals, but electric ports are N / 2 paths of PAM4 signals, so that the port density is improved. According to the system, a traditional 100G SFP interface can be transformed into a next-generation 100G DSFP or SFP-DD interface, the communication channel density and rate are doubled, and meanwhile, the system is downwards compatible with the SFP interface. The 100G SR2AOC active optical cable using the optical fiber interconnection system is composed of a multimode optical fiber, a gearbox, an NRZ receiving and transmitting machine and an optical device. The active optical cable can be compatible with a DSFP / SFP-DD packaging technology applied by a next-generation data center, and two paths of parallel 2 * 50Gbps PAM4 signal photoelectric transmission are realized. The optical communication system can realize multiplexing of the PAM4 mode and the NRZ mode. The electrical interface can be in a PAM4 mode or an NRZ mode by switching a switch of the gearbox.

Description

technical field [0001] The invention relates to an optical fiber interconnection method, belongs to the technical field of photoelectric communication, and particularly relates to a high-performance optical fiber interconnection system. Background technique [0002] With the rise of 5G, big data, distributed storage, AI, and high-speed computing services, the scale of data centers is increasing day by day. The data center switching system is increased from 10GE / 40GE to 100GE / 400GE, and the server access is also increased from 10GE to 25GE / 100GE. Based on the development trend of high throughput and large bandwidth, the existing 100GE QSFP28 interface is evolving to the next-generation 100GE interface. The next-generation 100GE interface consists of two 50GE physical interfaces. Compared with the previous-generation 100GE QSFP28 interface, the number of channels is halved and the port density is reduced. doubled. [0003] The next-generation 100G E interface has two packag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42
CPCG02B6/4246G02B6/4249H04B10/40H04B10/541H04B10/25H04B10/505H04B10/5161H04B10/66
Inventor 孙双王祚栋毛蔚白昀
Owner WINGCOMM CO LTD
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