100GBASE-LR4 QSFP28 Optical Transceiver Module for Enterprise Backbone Networks

QSFP28-100G-LR4

The 100GBASE-LR4 QSFP28 optical transceiver is designed for enterprise backbone networks, metro Ethernet infrastructure, and data center interconnect applications requiring transmission distances up to 10km.Using single-mode fiber and duplex LC connectors, the module enables reliable long-reach 100G connectivity while supporting high-density QSFP28 deployments. It is widely used for network expansion, aggregation layers, and inter-site connectivity where stable long-distance performance is essential.

Product Highlights
*Supports 100G Ethernet transmission up to 10km over SMF
*LAN-WDM architecture with 4 × 25G channels
*Duplex LC connector for simplified deployment
*Fully compliant with IEEE 802.3ba 100GBASE-LR4
*Digital Diagnostic Monitoring (DDM) support
*Low power consumption ≤3.5W
*Compatible with major switch and router platforms
*Ideal for enterprise backbone and campus networks

Quantity:

Contact Now

add to cart

Brand Compatible With 100GBASE-LR4 QSFP28 Transceiver Module（QSFP28 Double Fiber Single-Mode, 100G, 1310nm, 10km, LC, DDM）

The 100G QSFP28 LR4 optical transceiver is designed for long-distance 100G Ethernet transmission over single-mode fiber.With support for up to 10km transmission using duplex LC connectors, the module is widely deployed in enterprise backbone networks, campus aggregation layers, metro access infrastructure, and data center interconnect applications.Its compact QSFP28 form factor enables high-density deployment while maintaining reliable performance and low power consumption.

Product Details

Part Number：QSFP28-100G-LR4

Description：QSFP28 optical module dual-fiber multimode, 100G, LC, working temperature 0~70℃, 1310nm, 10KM, DDM

Compatible with：H3C, HW, Cisco, HP, etc

Data Rate	Module Type	Distance	Wavelength	Interface	Temperature	DDM
100Gb/s	QSFP28	10KM	1310nm	LC	0~70℃	Yes

Specifications

Part Number	QSFP28-100G-LR4	Brand	Firstoptic
Form Factor	QSFP28	Max. Data Rate	103.125Gbps (4x 25.78Gbps)
Wavelength	1310nm	Max. Cable Distance	10km
Connector	Duplex LC	Media	SMF
Transmitter Type	4 x LAN WDM EML	Receiver Type	PIN
TX Power	-4.3~4.5dBm	Minimum Receiver Power	-10.6dBm
Power Budget	6.3dB	Receiver Overload	4.5dBm
Power Consumption	≤3.5W	Extinction Ratio	>4dB
Core Size	9um	Modulation	4x25G NRZ
Commercial Temperature Range	0 to 70°C (32 to 158°F)	Protocols	QSFP28 MSA, SFF-8636, IEEE 802.3‑2012, PSM4 MSA, CAUI-4

Certification system

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

Enterprise backbone diagram with 100g qsfp28 lr4 optical module and OS2 single-mode fiber

Enterprise Backbone Networks

The 100g qsfp28 lr4 optical module is widely deployed in enterprise backbone networks requiring stable 100G connectivity over single-mode fiber.
It supports long-distance communication between headquarters, branch offices, and core network infrastructure with transmission distances up to 10km.

Campus & Aggregation Networks

The 100gbase-lr4 optical transceiver is commonly used for aggregation links between core and distribution switches in campus network environments.
Its duplex LC interface and QSFP28 form factor simplify network expansion while maintaining reliable performance.

Campus aggregation topology using 100gbase-lr4 optical transceiver and 10km single-mode fiber

Data center storage link diagram with 100g qsfp28 lr4 optical module

Data Center Storage Networking

Deploy the 100G QSFP28 LR4 optical transceiver for high-speed connectivity between storage servers and 100G Ethernet switches in modern data center environments.

Supports up to 10km transmission over OS2 single-mode fiber, providing reliable bandwidth for storage networking, cloud computing, and enterprise infrastructure applications.

Features

The 100G QSFP28 LR4 optical transceiver is commonly used in networks requiring transmission distances beyond the reach of multimode fiber solutions.
Typical deployment scenarios include:

Enterprise backbone connectivity
Campus network aggregation
Metro Ethernet access networks
Data center interconnect (DCI)
ISP and telecom transport infrastructure
Cloud service provider network expansion

100gbase-lr4 optical transceiver performance testing equipment

Test Equipment

100g qsfp28 lr4 optical module compatibility validation test

Compatible Test

100gbase-lr4 optical transceiver environmental reliability test

QC Test

High Compatibility for all Brands

The company sells a full line of QSFP28 optical module products compatible with all major brands of equipment.

100g qsfp28 lr4 optical module compatible with Cisco Arista NVIDIA Huawei H3C and Juniper

FAQ Section

Q1. What is a 100GBASE-LR4 optical transceiver?

A 100GBASE-LR4 optical transceiver is a QSFP28 optical module designed for 100G Ethernet transmission over single-mode fiber. Using LAN-WDM technology and duplex LC connectors, it supports transmission distances up to 10km and is commonly deployed in enterprise backbone networks, campus networks, and data center interconnect applications.

Q2. What fiber is required for a 100G QSFP28 LR4 module?

The 100G QSFP28 LR4 optical module operates over OS2 single-mode fiber and uses duplex LC connectors. It supports reliable 100G transmission up to 10km while maintaining low signal loss and stable performance.

Q3. What is the difference between 100G QSFP28 LR4 and 100G QSFP28 SR4?

100G QSFP28 LR4 uses 1310nm LAN-WDM technology over single-mode fiber and supports transmission distances up to 10km. In contrast, 100G QSFP28 SR4 uses 850nm multimode technology with MPO connectors and typically supports up to 100m over OM4 multimode fiber.

Q4. Is the 100G QSFP28 LR4 module compatible with major switch vendors?

Yes. The 100G QSFP28 LR4 optical transceiver can be programmed and tested for compatibility with Cisco, Arista, Juniper, HPE, NVIDIA, Huawei, H3C, Dell, and other major networking platforms.

Q5. Where is a 100GBASE-LR4 optical transceiver commonly used?

100GBASE-LR4 optical transceivers are widely used in enterprise backbone networks, campus network connectivity, metropolitan access networks, and data center interconnect environments requiring transmission distances up to 10km.

Q6. Does the QSFP28 LR4 module support Digital Diagnostic Monitoring (DDM)?

Yes. The module supports Digital Diagnostic Monitoring (DDM), allowing real-time monitoring of temperature, voltage, transmit power, and receive power to simplify network maintenance and troubleshooting.

Recommend Products

Send Message