With the rapid development of the Internet, cloud computing, big data and other industries, 100G products are more and more widely used. With its advantages of small size, low power consumption, and high density, QSFP28 package has become the mainstream package of 100G optical modules currently. As the "high-speed optical transceiver engineering and technology research center for 5G and large data centers" recognized by the Science and Technology Department of Guangdong Province,100G series optical modules, as the Shenzhen Opway's flagship products, won the award of Guangdong high-tech products in 2019. It is famous for its complete product series, excellent quality and price. At present, 100G QSFP28 series in Shenzhen Opway includes SR4, CWDM4, PSM4, LR4, ER4, LR1, ER1, BIDI LR1, BIDI ER1, among which 100G QSFP28 ER4 won the "2021 brand recommendation award" by Info Stone. It has been unanimously recognized by the industry.

   The 100G QSFP28 ER4 optical module complies with the QSFP MSA, IEEE 802.3BA, and ITU-T G.959.1 standards. It can meet the requirements of 100G Ethernet and OTU4 applications, and meet the 40km zero-error transmission when the FEC is not enabled. In order to achieve the standard 100G ER4, the optical transceiver needs to adopt SOA+PIN solution. However, SOA+PIN is expensive. In order to reduce the cost while meeting the application requirements, most optical module manufacturers define their own ER4 Lite standard and adopt APD receiver, which can meet most application scenarios. For some Ethernet applications with low real-time requirements, 4WDM MSA standard organization has specially customized 100G 4WDM-40 MSA standard to achieve 40km transmission at 103.125Gbs rate under the premise of FEC.

Shenzhen Opway always adheres to close to customer needs, continues to optimize product solutions and refine models, and provides differentiated solutions for customers to choose. At present, Shenzhen Opway provides the following five models of 100G ER4 series optical modules: