China KCO QSFP+ 40G LR4 LC 40Gb/s QSFP+ LR4 SMF 10km LC Transceiver Manufacturers, Product

What is QSFP+ 40G LR4 A 40G QSFP+ LR4 is a hot-pluggable optical transceiver module for 40 Gigabit Ethernet (40GbE) that uses single-mode fiber to transmit data up to 10 kilometers. It operates by combining four separate 10G channels onto two strands of single-mode fiber using CWDM technology, which is then separated back into four 10G channels on the receiving end. This module is known for its high-density connectivity, small form factor.

Product Description

Key Technologies & Definitions
QSFP+ Form Factor

Quad Small Form-Factor Pluggable Plus is a small, hot-swappable module supporting aggregated optical speeds of 40G.

LR4 (Long Reach 4)

Designed for long-distance applications, utilizing four separate wavelengths (channels) for data transmission.

40G Bandwidth

Achieved by running four independent 10G channels simultaneously to deliver high-speed connectivity.

Single-Mode Fiber (SMF)

LR4 modules use single-mode fiber optic cables, enabling significantly longer transmission distances compared to multi-mode fiber.

CWDM Technology

Combines four 10G channels onto different wavelengths (typically 1271, 1291, 1311, and 1331 nm) to travel over two single-mode fibers.

LC Connectors & Hot Plug

Features duplex LC connectors for easy connectivity and is hot-pluggable for seamless maintenance without device shutdown.

40G Ethernet Data Center LAN Digital Diagnostics Monitoring (DDM/DOM)
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit
Storage Temperature Ts -40 - 85 °C
Relative Humidity RH 5 - 95 %
Power Supply Voltage VCC -0.3 - 4 V
Signal Input Voltage - Vcc-0.3 - Vcc+0.3 V
40G QSFP+ LR4 Transceiver Module
Key Features & Compliance
  • 4 CWDM lanes Mux/Demux design
  • Up to 11.1Gbps Data rate per wavelength
  • Up to 10km transmission on SMF
  • Electrically hot-pluggable capability
  • Digital Diagnostics Monitoring Interface
  • Compliant with QSFP+ MSA with LC connector
  • Case operating temperature range: 0°C to 70°C
  • Power dissipation < 2.5 W
  • Compliant with IEEE 802.3ba & SFF-8436
  • RoHS Compliant safety standards
Frequently Asked Questions
What is the maximum transmission distance for this QSFP+ LR4 module?

This module supports long-distance transmissions of up to 10km when paired with Single-Mode Fiber (SMF) optic cables.

What connector type does this module require?

The QSFP+ LR4 transceiver is equipped with a standard duplex LC connector for seamless fiber connectivity.

How does CWDM technology function in this module?

It multiplexes four independent 10G channels into four separate wavelengths (typically centered at 1271, 1291, 1311, and 1331 nm) to enable data transmission over a single pair of SMF fibers.

Does the transceiver support real-time monitoring?

Yes, it features Digital Diagnostics Monitoring (DDM/DOM) interfaces, allowing administrators to monitor operating temperature, supply voltage, and optical power levels in real time.

Can this module be inserted or removed without powering down the host device?

Yes, it is designed to be hot-pluggable, meaning it can be plugged in or unplugged without shutting down the system power.

What compliance standards are met?

The module is fully compliant with IEEE 802.3ba, SFF-8436, the QSFP+ Multisource Agreement (MSA), and RoHS directives.

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