LR4 QSFP
Our LR4 QSFP optical transceiver series provides a reliable and evolutionary path for high-bandwidth, long-reach network connectivity, supporting distances up to 10 kilometers. This family leverages proven LAN-WDM technology, multiplexing four optical lanes onto a single pair of duplex LC single-mode fibers, offering a clean and fiber-efficient solution for extended links.
The LR4 QSFP series is designed for seamless network scaling. It begins with the 100G QSFP28 LR4, the established workhorse for 100G metro and data center interconnect (DCI) links. For doubled capacity, the 200G QSFP56 LR4 maintains the same 10km reach with higher data density. For the highest bandwidth demand, the 400G QSFP-DD LR4 utilizes an advanced eight-lane electrical interface to deliver 400G over the same reliable optical infrastructure, making it ideal for next-generation core networks and AI cluster backbones.
FAQ
Q1: In which scenarios should I choose LR4 modules over more cost-effective short-reach modules like SR or DR?
A1: The decision hinges on distance and application. Choose LR4 when you need to connect different buildings, across a campus, or for metro-area data center interconnects within its 10km range. Short-reach modules are only suitable for connections within a single data hall or building.
Q2: If there is a link failure, how can I preliminarily determine if it's a module issue or a fiber line problem?
A2: The most effective method is to use the module's Digital Diagnostic Monitoring (DDM) capabilities. Access the port statistics on your switch. If the Transmit (Tx) Power is normal but the Received (Rx) Power is very low or absent, the issue likely lies with the far-end module or the fiber link. If the local Tx Power is abnormal, the module itself might be faulty.
Q3: Besides speed, what are the key differences between the 100G, 200G, and 400G modules in the LR4 series?
A3: While speed is the primary difference, they also utilize different, industry-standard form factors to achieve their rates: QSFP28 for 100G, QSFP56 for 200G, and QSFP-DD for 400G. The newer form factors are more compact and advanced, offering better power efficiency and port density at higher speeds. However, all three share a similar optical principle (using four WDM lanes) to achieve the 10km reach over a single pair of single-mode fibers.
Q4: Is there a significant difference in power consumption and heat output among these three modules?
A4: Power consumption generally increases with data rate. A 400G LR4 module will consume more power (and generate more heat) than a 100G module. For high-density deployments, it's advisable to check the specific power specification of each module and ensure your switch chassis and cabinet have adequate cooling and power budget to maintain stable operation.
Our mission
At our facility, we believe quality is integral to every connection we enable. Our comprehensive quality control process begins with stringent inspection of incoming materials and components. Each production stage incorporates in-line testing and verification to ensure precision assembly. Finally, every finished transceiver undergoes a full suite of functional, performance, and reliability tests under various conditions to meet or exceed industry specifications.
Macrochip is deeply committed to delivering products that not only meet technical standards but also consistently exceed our customers' expectations for long-term reliability. Our goal is to build lasting trust by ensuring that every unit we ship performs flawlessly in your network.
Your satisfaction is the ultimate goal of our service.
We remain committed to providing you with reliable support through our professionalism and dedication.
We look forward to serving you again.
Macrochip Technology Co., Ltd.
Address: Quanzhou Digital Economy Industrial Park Complex, Xiaxian Road No. 300, Xiamei Community, Beifeng Subdistrict, Fengze District, Quanzhou City, Fujian Province.
Telephone: +86 (595) 2901-6166
Email: sales@macrochip.com.cn
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