The standard of 4x10Gbit/s QSFP+ parallel optical transceiver module is EE802. 3 batW, the feature of this protocol is to support 40Gbit/s and 100Gbit/s W Ethernet frame transmission at the same time, and has a good extensibility specialization to support future higher The rate and pressure of EE 802. 3 Possible physical layers outside the range W. The protocol defines the physical layer specification fW of backbone network, copper cabling, multi-mode fiber and single-mode fiber communication according to different port types. For 40G QSFP+ pluggable optical modules, the standard is 40 GBAS E-S R4
The physical layer defined in IEEE 802.3ba includes physical coding sublayer (PCS), physical medium access layer (PMA) and physical medium related layer (PMD). The DMn interface is the MAC layer and the PMD. The on-chip connection between the HY layers, the 40Gbit/sW Ethernet Mill interface is called XLGMII, and the 100Gbit/sW Ethernet Mill interface is called CGMIII. To complete the adaptation of the MAC layer and the PMA sublayer. The aggregation code stream from the XL GMIII interface adopts the 64/66 bit block coding structure, and the aggregation code stream rate is 41. 25Gbit/s, sent to the PCS sublayer. The PCS sublayer allocates the aggregated stream 666-bit to 4 PCS channels, and periodically inserts the unique mark of the channel. The PMA sublayer is located between the PCS sublayer and the PMD sublayer, and provides multiplexing functions of channels or wavelengths, and converts the 4 PCS channels into the number of channels used for PMD. The PMD sublayer is located at the bottom layer of the entire network, and this layer defines various optoelectronic transceiver characteristics of the module. The 40GB ASE-SR4 specification is based on 850nm laser technology, with a rate of 10 Gb/s per channel and a total Ethernet transmission rate of 40 Gbps/s. Each receiving end uses four parallel OM3 multimode fibers, which can transmit a distance of 100 mW on the OM3 multimode fibers.
SFF-8436 Protocol
The SFF-8436 protocol standard has an extremely important position for the communication industry, it provides the basic conditions for the healthy and orderly development of the industry, and enables industry R&D designers to maximize the use of various communication resources. For the QS FP+ MSA protocol, it is the QSFP+ optical module reference standard developed through the cooperation of major manufacturers. It has been revised and improved again and again, so that the system supports 10 GW Ethernet, optical fiber Channel, Infm legacy and [i6], SAS and SONET/SDH standards. The SFF-84% protocol is the basis of QSFP+MSA reference. The protocol mainly defines standard protocols such as the physical model of the module, mechanical dimensions, optical and electrical ports, etc.
Conclusion
4 x10 Gbit/s QSFP+ parallel receiving and light emitting module, this module can be applied to the interconnection of routers, data and other communications, effectively replacing copper cable communications.The market size of 40G QSFP optical modules continues to increase. QSFPTEK is an optical module production and sales company with a history of more than ten years. Welcome to contact.
