What are the four wavelengths in the 100G LR4 module? How are they modified and multiplexed?

The four wavelengths used in the 100G LR4 module are 1271 nm, 1291 nm, 1311 nm, and 1331 nm. These four wavelengths are signaled by a modulation technique (typically PAM-4), and then wavelength-division-multiplexing (WDM) is performed in the optical path device to multiplex them into a single fiber for transmission.

What are the application scenarios for 100G LR4?

The 100G LR4 module is commonly used in data centers, enterprise networks, and carrier networks where high bandwidth and long distance transmission is required.

Any quality guarantee for the 100G LR4 module?

Of course, we can provide professional test reports to guarantee the reliability of the modules.

100GBASE-LR4 QSFP28 1310nm 10km SMF Module for Dell

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Dell 407-BCDH Compatible 100GBASE-LR4 QSFP28 1310nm 10km DOM Duplex LC Transceiver Module for SMF

Name: Dell 407-BCDH Compatible 100GBASE-LR4 QSFP28 1310nm 10km DOM Duplex LC Transceiver Module for SMF
Brand: Naddod
SKU: 32400
Price: 369.00 USD
Availability: InStock
Rating: 5.0 (18 reviews)

#32400

Model: QSFP-100G-LR4

Sold: 317

In Stock: Available

$ 369.00

Types:

InfiniBand

RoCE (Ethernet)

InfiniBand

RoCE (Ethernet)

Transceiver Types:

QSFP-100G-LR4

QSFP-100G-LR4

Item Spotlights

Max Power Consumption ≤4.5W.
Provide Professional Compatibility and Parameter Test Reports.
Compliant with Hot Pluggable QSFP28 MSA, IEEE 802.3ba Standard.
Class1/1M Standard Product, Compliant with RoHS Environmental Protection Standards (Lead-Free).
DDM(Digital Diagnostic Monitoring) Supported.
30-Day Free Return, 1-Year Free Replacement, 3-Year Warranty, Lifetime After-sales Technical Support.

Dell 407-BCDH Compatible 100GBASE-LR4 QSFP28 1310nm 10km DOM Duplex LC Transceiver Module for SMF

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Specifications

Applications

Product Highlights

Questions & Answers

Resources

Specifications

Applications

Product Highlights

Questions & Answers

Resources

Specifications

Form Factor

QSFP28

Distance

10km

Wavelength

1310nm

Connector

Duplex LC

Power Consumption

≤3.5W

Transmitter

DML

Receiver

Media

SMF

Modulation（electrical ）

4x25.78Gb/s NRZ

Modulation（Optical ）

4x25.78Gb/s NRZ

Case Temperature(℃)

0 to 70°C (32 to 158°F)

Protocol

100G Ethernet Compliant

Connectivity Solutions

The Spine-Leaf Network Architecture

The network consists of the SN2700 as the Spine and Leaf switch, forming a high-speed and efficient network core. The SN2410 serves as the TOR (Top of Rack) switch with 25G NICs connected, providing high-speed and efficient access to end devices. With this topology, the network is able to process and transmit data quickly and efficiently, improving overall network performance.

NVIDIA Spectrum SN2700,NVIDIA Spectrum SN2410

Applications

Product Highlights

Application of NADDOD QSFP-100G-LR4 transceiver

Suitable for applications such as interconnection between internet data center (IDC) computer rooms, HPC, high-frequency trading, etc.

Six professional transceiver performance tests

NADDOD has a full range of professional testing equipments for testing various parameters of products to ensure high performance and quality of optical transmission stability.

Standardized Service

Compare Items

	QSFP-100G-LR4	QSFP-100G-SR4	QSFP-100G-PSM4	QSFP-100G-ER4	QSFP-100G-ZR4
Wavelength	1310nm	850nm	1310nm	1310nm	1310nm
Transmission Distance	10km	70m(@OM3)/(100m@OM4)	2km	30km（no FEC）40km（FEC）	80km（FEC）
Media	SMF	MMF	SMF	SMF	SMF
TX Power	-2.9~4.5dBm	-8.4~2.4dBm	-5.5~2dBm	-2.9~4.5dBm	2.0~4.5dBm
Typical Power Consumption	≤3.5W	≤3.5W	≤3.5W	≤4.5W	≤6.5W
Commercial Temperature Range	0~70°C	0~70°C	0~70°C	0~70°C	0~70°C

Questions & Answers

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What are the packaging forms of optical devices for 100G LR4 and have any differences?

The common packaging forms for 100G LR4 transceivers are BOX (box package) and COB (package on chip): COB packaged optical modules are suitable for data center applications. It adopts the method of attaching the laser chip directly to the PCB, which helps to save PCB area and simplify the packaging process, thus effectively reducing the production cost of transceivers.COB package meets the needs of high reliability and low cost. This ensures that the laser chip is not affected by environmental factors such as temperature variations and water vapor while meeting the requirements for lower power consumption, higher reliability, and harsher operating environments.

What is the difference between 100G QSFP28 LR4 and 100G QSFP28 LR?

The modulation mode of the 100G QSFP28 LR is 1x100G PAM4, while the 100G QSFP28 LR4 is 4x25G NRZ.

What does the LR4 in the 100G LR4 transceivers stand for?

In 100G LR4, LR4 stands for "Long Reach 4", indicating that it is an optical module for long distance transmission. Where 4 means that four different wavelengths of optical signals are used.

Resources

QSFP-100G-LR4 Datasheet

Quality Certification

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