Comprehensive Overview of 100G QSFP28 Transceiver Types
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Extend your 100G reach to 100 km with our QSFP28 eZR4+ transceiver module
In today’s technological landscape, the demand for 100G Ethernet continues to surge, driving the need for 100G optical modules. The QSFP28 is the preferred form factor, owing to its compact size and minimal power consumption. As these module plays a pivotal role in network construction, understanding the various types available is essential for optimal performance and cost-effectiveness.
What is 100G QSFP28 Optical Transceiver?
The 100G QSFP28 optical transceiver is crafted for 100 Gigabit Ethernet, EDR InfiniBand, or 32G Fibre Channel applications. Sporting a footprint akin to the 40G QSFP+, the QSFP28 operates on four channels of high-speed data rates at 25Gbps per channel to deliver 100Gbps. Compared to 100G CFP/CFP2/CFP4, QSFP28 100G optics surpass them with the strong ability to increase density, lower power consumption, and reduced price per bit.
Understanding 100G QSFP28 Standards
100G QSFP28 optical modules are defined by two primary organizations: IEEE and MSA (Multi-Source Agreement). “QSFP” stands for Quad (4-channel) Small Form Factor Pluggable, while “28” denotes a maximum transmission rate of 28Gbps per channel. Suffixes like “SR4,” “LR4,” “ER4,” and “ZR4” signify short range, long range, extended range, and ultimate range respectively. In this newsletter, we will look into the Singlemode (SM) modules.
100G QSFP28 Transceiver Singlemode (SM) Varieties
100G QSFP28 Four Lambda Transceivers
In transceivers with four lambdas, data transmission is distributed across 4 separate wavelengths. Each lane has its own transmitter and receiver operating at 25Gbps, aggregating to the total data rate of 100Gbps. The SM wavelengths can be further classified to LAN WDM (1295nm, 1300nm, 1305nm and 1310nm) and CWDM (1270nm, 1290nm, 1310nm and 1330nm), with the latter offering better cost efficiency due to the wider separation of wavelengths.
Figure 1: Singlemode (SM) QSFP28 4 lambda configuration
The QSFP28 modules that can be offered are:
|
QSFP28 |
Datasheet |
Max Distance |
Connector |
|
PSM4 |
2km |
MPO 12 |
|
|
CWDM4 |
10km |
Duplex LC |
|
|
LR4 |
10km |
Duplex LC |
|
|
ER4 |
40km |
Duplex LC |
|
|
ZR4 |
80km |
Duplex LC |
|
|
ZR4+ |
100km |
Duplex LC |
100G QSFP28 Single Lambda Transceivers
In single lambda transceivers, data transmission occurs over a single optical wavelength, using 1 channel/ lane, allowing higher data rate over a pair of optical fiber. Unlike 4 lambda transceivers, single lambda technology simplifies the design of transceivers with reduced optics, thus reduces power consumption and costs. The single lambda transceiver supports only SM transmission, ranging from 500m (DR1), 2km (FR1) and 10km (LR1).
Figure 2: Singlemode (SM) QSFP28 Single lambda configuration
|
QSFP28 |
Datasheet |
Max Distance |
Connector |
|
DR1 |
500m |
Duplex LC |
|
|
FR1 |
2km |
Duplex LC |
|
|
LR1 |
10km |
Duplex LC |
CWDM Single Lambda QSFP28 transceiver module is designed for use in 100Gbps Ethernet links over 10km single mode fiber, incorporating one channel optical signal, on either 1270, 1290, 1310, or 1330nm. Typically, they are used in Data Center Environment for connecting 400Gbps Ethernet CWDM wavelengths, and break-out to specified 100Gbps CWDM wavelengths for leaf-spine networks.
CWDM Single Lambda QSFP28 transceiver:
QSFP28 | Datasheet | Max Distance | Connector | Wavelength |
LR | 10km | Duplex LC | Please specify xx = 27:1270nm, 29:1290nm, 31: 1310nm, 33:1330nm |
DWDM Single Lambda QSFP28 transceiver module is designed for use in C-band DWDM networks with 100GHz ITU Grid spacing for Data Center Interconnectivity. The modules have fixed DWDM wavelengths that are plugged directly into transponders, routers, or switches. In most cases it can achieve 2km without DCM (Dispersion Compensation Module) and EDFA (Erbium-Doped Fiber Amplifier). However, for long and extended distances up to 120km, DCM and EDFA are required to compensate fiber link loss and fiber dispersion. Starview can provide you the complete solution for such requirements.
DWDM Single Lambda QSFP28 transceiver:
QSFP28 | Datasheet | Max Distance | Connector | Wavelength |
PAM4 | 80km | Duplex LC | Please specify xx = ITU Channel 15 to 61 (refer to DWDM Wavelength Guide) |
Why Choose Starview’s 100G QSFP28 Transceivers?
Starview Technologies 100G QSFP28 transceivers redefine reliability and performance in long-haul data transmission. With programmable features and the innovative STARPOD technology, seamless integration into various networking equipment is ensured, eliminating error messages and alarms. Organizations seeking efficiency, speed, and unparalleled reach in their data networks will find Starview offerings indispensable.
Experience the Future of Networking with Starview
To learn more about Starview’s product lineup and seamlessly integrate their 100G QSFP28 transceivers into your network infrastructure, explore the Starview E-Catalog or contact us at sales@starviewtech.net. Embrace the power of long-haul data transmission with Starview’s cutting-edge solutions – the future of networking awaits.
Stay Updated with Our Newsletters
Missed our previous newsletters focusing on optical modules? Catch up by visiting the links below:
“Why QSFP28 ZR4 is The Best Choice for 100G long-haul Data Center Interconnect (DCI) transmission?”