NADDOD-Building an Intelligent World with Everything Connected

At present, the technology of 100G Ethernet is becoming mature and the deployment of 100G Network by enterprises, institutions and governments has been gradually put on the right track. 100G optical transceiver has the characteristics of high port density, low power consumption and low cost. It is popular with data center and is usually used with 100G switch. NADDOD’s 100G optical transceiver is fully compatible with switches from Cisco, Arista, Juniper and so on, offering a full range of optical transceiver solutions to help users build cost-effective network systems. NADDOD 100G QSFP28 Optical Transceiver Module NADDOD 100G QSFP28 optical transceivers can satisfy the requirements of different transmission distance: short distance (2km or less), middle distance (2–10km), and long distance (10km or more). At present, among the three kinds of distance, the 2km middle distance occupies the main market share. NADDOD 2km QSFP28 optical transceivers are available in QSFP-100G-PSM4 and QSFP-...

  What Is Passive Optical Network (PON)? PON (Passive Optical Network) is a point-to-multipoint passive fiber access technology, originated in the 1990s. ITU-T G.982 gives the reference of PON function configuration, mainly contains three basic functional parts: Optical Line Terminal (OLT), Optical Network Unit (ONU) and Optical Distribution Network (ODN). The functions of the three parts are as follows: OLT:  Optical Line Terminal, which is simply understood as the “upstream” operator-side device of optical network transmission. It is used to communicate with the ONU on the user side through one or more ODN optical fiber distribution networks. The OLT and the ONU have a master-slave communication relationship. OLT manages signaling and monitoring information from the ONU; OLT equipment is generally deployed in the operator base station, or service node room. ONU:  Optical Network Unit, located between the ODN fiber distribution network and the user, is a user-side device...

Based on the trend of high throughput and large bandwidth in data center, server NICs and access switches are evolving to next-generation 100G interfaces. The biggest difference between the next-generation 100G interface and the QSFP28 interface at this stage is in the size. There are three interface standards for the 100G interface: DSFP, SFP-DD and SFP112. These standards have in common is the small mechanical size. Having the same size with SFP series transceiver, they can support 48*100G under the 1U switch panel to connect servers. Compared with SFP28 interface, the port density is increased by 4 times, greatly reducing the cost of equipment, operation and maintenance. Image Source: sfp-dd.com DSFP, SFP-DD and SFP112 are not very different in appearance, but they differ greatly in specifications and parameters. SFP112 uses 100G Lambda, which is limited by product power consumption and 100G SerDes is not yet widely used in switches and NIC ports, so there is no market demand for SF...