Upgrade your network to high-speed 40 Gigabit Ethernet with MEFIBEROPTIC’s QSFP-40G-LR4 Optical Transceiver. Engineered for exceptional performance and reliability, this hot-pluggable QSFP+ module provides a cost-effective solution for extending your 40GbE links up to 10 kilometers over standard single-mode fiber (SMF). Designed for seamless integration into enterprise core networks, data center interconnects, and service provider infrastructure, it fully complies with QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4 standards.

Key Features

High-Speed 40Gbps Throughput: Delivers an aggregate bandwidth of over 40Gbps (up to 44Gbps data rate) for demanding applications.
Extended Reach: Supports link lengths up to 10km on G.652 single-mode fiber (SMF).
Industry Standard Compliance:
- Fully compliant with QSFP+ Multi-Source Agreement (MSA) SFF-8436 and SFF-8636.
- Adheres to IEEE 802.3ba 40GBASE-LR4 specifications.
Advanced Optical Design:
- Features 4 CWDM (Coarse Wavelength Division Multiplexing) lanes using an uncooled 4x10Gbps DFB (Distributed Feedback) TOSA (Transmitter Optical Sub-Assembly).
- Utilizes a high-sensitivity PIN ROSA (Receiver Optical Sub-Assembly).
- Integrated MUX/DEMUX for efficient wavelength management.
- Operating Wavelengths: 4 lanes at nominal wavelengths of $1271nm1271\text{nm}$ , $1291nm1291\text{nm}$ , $1311nm1311\text{nm}$ , and $1331nm1331\text{nm}$ .
Low Power Consumption: Efficient design with power consumption typically less than $3.5W3.5\text{W}$ , reducing operational costs and thermal load.
Digital Diagnostics Monitoring (DDM/DOM): Provides real-time monitoring of critical parameters such as temperature, voltage, bias current, transmit power, and receive power (as detailed in your “Digital Diagnostic Functions” table).
Hot-Pluggable QSFP+ Form Factor: Allows for easy installation and replacement without shutting down equipment.
Duplex LC Connector Interface: Standard optical interface for easy patching.
Robust Performance:
- Operating case temperature: $0∘C0^\circ\text{C}$ to $70∘C70^\circ\text{C}$ (Commercial Grade).
- Built for reliability in demanding network environments.
Environmentally Friendly: RoHS compliant.
OEM Compatibility: Fully compatible with a wide range of switches and routers from major vendors (e.g., Cisco, Juniper, Arista, Dell, Brocade, etc.).

Benefits:

Cost-Effective 40GbE Migration: Provides an affordable pathway to upgrade network capacity.
Simplified Deployment: Hot-pluggable design and standard LC connectors ensure easy installation and maintenance.
Reliable Long-Distance Connectivity: Extends 40GbE networks up to 10km, ideal for campus backbones and inter-building links.
Reduced Operational Expenses: Low power consumption minimizes energy costs and cooling requirements.
Enhanced Network Monitoring: DDM/DOM capabilities allow for proactive network management and faster troubleshooting.
Space Efficiency: Compact QSFP+ form factor enables high port density in switches and routers.
Investment Protection: Based on established industry standards ensuring interoperability and longevity.

Typical Applications:

40GBASE-LR4 Ethernet Links
Data Center Interconnects (DCI)
Enterprise Core and Aggregation Networks
High-Performance Computing (HPC) Clusters
Service Provider Networks
Infiniband QDR and DDR Interconnects (ensure your module supports the specific IB requirements if listing this)
Client-side 40G Telecom Connections

Technical Specifications

Absolute Maximum Ratings:

Parameter	Symbol	Min	Max	Unit
Storage Temperature	$T_S$	$- 40$	$+ 85$	$∘C^\circ\text{C}$
Operating Case Temperature	$T_{OP}$	$0$	$+ 70$	$∘C^\circ\text{C}$
Power Supply Voltage	$V_{CC}$	$- 0.5$	$+ 3.6$	$V\text{V}$
Relative Humidity (non-condensing)	$R H$	$0$	$85$	$%\%$
Damage Threshold, each Lane	$TH_d$	$3.5$		$dBm\text{dBm}$

Recommended Operating Conditions: (Your existing table)

Parameter	Symbol	Min	Typical	Max	Unit
Operating Case Temperature	$T_{OP}$	$0$	$25$	$70$	$∘C^\circ\text{C}$
Power Supply Voltage	$V_{CC}$	$3.135$	$3.3$	$3.465$	$V\text{V}$
Power Supply Current	$I_{CC}$			$1000$	$mA\text{mA}$
Data Rate, per Lane	$D R$		$10.3125$	$11.2$	$Gbps\text{Gbps}$
Control Input Voltage High	$V_{IH}$	$2.0$		$V_{CC}$	$V\text{V}$
Control Input Voltage Low	$V_{IL}$	$GN D$		$0.8$	$V\text{V}$
Link Distance (SMF)	$L$	$0.002$		$10$	$km\text{km}$

Optical Characteristics (Transmitter – Per Lane):

Parameter	Symbol	Min	Typ	Max	Unit
Center Wavelength Lane 0	$λc0\lambda_{c0}$	$1264.5$	$1271$	$1277.5$	$nm\text{nm}$
Center Wavelength Lane 1	$λc1\lambda_{c1}$	$1284.5$	$1291$	$1297.5$	$nm\text{nm}$
Center Wavelength Lane 2	$λc2\lambda_{c2}$	$1304.5$	$1311$	$1317.5$	$nm\text{nm}$
Center Wavelength Lane 3	$λc3\lambda_{c3}$	$1324.5$	$1331$	$1337.5$	$nm\text{nm}$
Average Output Power (each lane)	$P_{OUT}$	$- 8.2$		$0.5$	$dBm\text{dBm}$
Optical Modulation Amp (OMA) (each lane)	$P_{OMA}$	$- 5.2$		$3.0$	$dBm\text{dBm}$
Extinction Ratio (ER)	$ER$	$3.5$			$dB\text{dB}$
Total Average Launch Power	$P_{Total}$			$8.3$	$dBm\text{dBm}$
RINxDFB	$R I N$			$- 128$	$dB/Hz\text{dB/Hz}$
Optical Eye Mask		\multicolumn{4}{c	}{Compliant with IEEE 802.3ba (Clause 88)}

Optical Characteristics (Receiver – Per Lane): (Adapted from your table)

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Center Wavelength Lane 0	$λc0\lambda_{c0}$	$1264.5$	$1271$	$1277.5$	$nm\text{nm}$
Center Wavelength Lane 1	$λc1\lambda_{c1}$	$1284.5$	$1291$	$1297.5$	$nm\text{nm}$
Center Wavelength Lane 2	$λc2\lambda_{c2}$	$1304.5$	$1311$	$1317.5$	$nm\text{nm}$
Center Wavelength Lane 3	$λc3\lambda_{c3}$	$1324.5$	$1331$	$1337.5$	$nm\text{nm}$
Average Receive Power (each lane)	$P_{IN}$	$- 12.6$		$1.0$	$dBm\text{dBm}$
Receiver Sensitivity (OMA) (each lane)	$S_{RX}$			$- 11.5$	$dBm\text{dBm}$	Per IEEE 802.3ba, ER=3.5dB, BER < $10^{-12}$
Receiver Overload (each lane)	$P_{OL}$	$1.0$			$dBm\text{dBm}$
LOS Assert	$LOS_A$	$- 30$			$dBm\text{dBm}$
LOS De-assert	$LOS_D$			$- 14$	$dBm\text{dBm}$
LOS Hysteresis	$LOS_H$	$0.5$			$dB\text{dB}$

Standards & Compliance

QSFP+ MSA SFF-8436, SFF-8636
IEEE 802.3ba (40GBASE-LR4)
IEEE 802.3bm
OTN OTU3 (ITU-T G.709)
RoHS Compliant
CE, FCC Certified (if applicable)
Laser Safety Class 1 (compliant with IEC-60825)

Alternative Names & Keyword Variations

Customers looking for this module might also search for:

40G QSFP+ LR4 transceiver,
QSFP 40G 10km module,
1310nm 40G QSFP+,
40GBASE-LR4 optical module,
QSFP+ 10km SMF transceiver,
40 Gigabit LR4 QSFP,
QSFP-40G-LR4 equivalent,
QSFP 40G LR4 SMF 10km DDM,
Hot-swappable 40G transceiver

4. FAQ Section

Q1: What is the QSFP-40G-LR4 transceiver used for?
- A: The QSFP-40G-LR4 is a hot-pluggable optical transceiver module used to transmit and receive 40 Gigabit Ethernet data over single-mode fiber up to 10 kilometers. It’s commonly used in data centers, enterprise backbone networks, and service provider applications for high-speed interconnects.
Q2: Is this transceiver compatible with my existing network equipment?
- A: This transceiver is fully compliant with QSFP+ MSA (Multi-Source Agreement) and IEEE 802.3ba 40GBASE-LR4 standards, ensuring broad interoperability with most QSFP+ ports on switches, routers, and network interface cards.
Q3: What type of fiber optic cable should I use with this module?
- A: This QSFP-40G-LR4 transceiver is designed for use with standard single-mode fiber (SMF), typically G.652 grade, and uses duplex LC connectors.
Q4: What does “LR4” signify in 40GBASE-LR4?
- A: “LR4” stands for Long Reach 4-lane. It indicates that the transceiver uses four separate optical lanes (wavelengths) to achieve the 40Gbps data rate, and it is designed for longer reach applications (up to 10km in this case) over single-mode fiber.
Q5: Does this module support Digital Diagnostics Monitoring (DDM)?
- A: Yes, this transceiver features full DDM (also known as DOM – Digital Optical Monitoring) capabilities. This allows real-time monitoring of parameters like operating temperature, supply voltage, laser bias current, transmit optical power, and receive optical power, aiding in network management and troubleshooting.
Q6: What is the maximum power consumption of this transceiver?
- A: The QSFP-40G-LR4 transceiver has a low power consumption, typically less than $3.5$ Watts, which helps in reducing overall energy costs and heat dissipation in high-density deployments.
Q7: What is the warranty period for this transceiver?
- A: MEFIBEROPTIC provides a [Specify your warranty, e.g., “3-year standard warranty”] for this QSFP-40G-LR4 transceiver, ensuring peace of mind and product reliability.
Q8: Can I hot-swap this module?
- A: Yes, the QSFP+ form factor is designed to be hot-swappable, meaning you can install or remove the transceiver from a network device without needing to power down the system, allowing for easier maintenance and upgrades.

5. Installation Steps (If Applicable)

Transceivers are generally straightforward, but best practices are good to include.

Installing Your QSFP-40G-LR4 Transceiver:

Safety First: If working with active systems, always follow appropriate electrostatic discharge (ESD) precautions. Wear an ESD wrist strap connected to a grounded surface.
Remove Dust Plugs: Carefully remove the protective dust plugs from the transceiver’s optical ports and the LC connectors of your fiber optic patch cable. Keep these plugs for future use if the transceiver or cable is disconnected.
Inspect Optical Interfaces: Visually inspect the transceiver’s optical bores and the fiber cable’s LC ferrules for any dust or contaminants. If necessary, clean them with an appropriate fiber optic cleaning tool (e.g., LC click cleaner or lint-free wipes with isopropyl alcohol).
Align Transceiver: Orient the QSFP+ transceiver correctly with the port in your switch or network device. The module is keyed to ensure proper insertion.
Insert Transceiver: Gently slide the transceiver into the QSFP+ port until it clicks into place, indicating it is securely seated. Do not force the module.
Connect Fiber Optic Cable: Connect the duplex LC connector of your single-mode fiber patch cable to the transceiver’s LC ports. Ensure proper A-to-B or A-to-A polarity based on your network design. (Typically, an LR4 will connect straight through on a duplex cable).
Verify Link Status: Once connected, check the port status LEDs on your network device to confirm a successful link. You can also check the device’s interface status via its command-line interface (CLI) or graphical user interface (GUI).
Utilize DDM (Optional): If your network management system supports it, you can monitor the transceiver’s DDM parameters to verify its operational health.

Removing the Transceiver:

Disconnect Fiber Optic Cable: Gently disconnect the LC fiber optic cable from the transceiver. Immediately cap the fiber ends and the transceiver ports to protect them from dust and damage.
Release Latch: Depending on the transceiver model, pull the bail latch, tab, or actuator to disengage the module from the port.
Remove Transceiver: Carefully slide the transceiver out of the port. Store it in an anti-static bag if not immediately reusing it.

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QSFP+ 40G LR4 1310nm 10km Optical Transceiver Module

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OEM

QSFP+ 40G LR4 1310nm 10km Optical Transceiver

Name: QSFP+ 40G LR4 1310nm 10km Optical Transceiver
Brand: MeFiberOptic.Com
SKU: M12865
Price: 309 USD
Availability: InStock
Rating: 5 (4 reviews)

Rated 5.00 out of 5 based on 1 customer rating

(1 customer review)

$309.00

QSFP+ 40G LR4 1310nm 10km Optical Transceiver Module CISCO, HUAWEI, H3C, Juniper, D-link, HP, IBM, dell, Mikrotik, Aruba,Quidway CompatibleThis product is a transceiver module designed for 2m-10km optical communication applications. The design is compliant to 40GBASE-LR4 of the IEEE P802.3ba standard.

SKU: M12865 Category: Optical Transceiver Modules Tags: 1310nm 40G QSFP+, 40 Gigabit LR4 QSFP, 40G QSFP+ LR4 transceiver, 40GBASE-LR4 optical module, Hot-swappable 40G transceiver, QSFP 40G 10km module, QSFP 40G LR4 SMF 10km DDM, QSFP-40G-LR4 equivalent, QSFP+ 10km SMF transceiver

Description

Parameter	Symbol	Min	Max	Unit
Storage Temperature	$T_S$	$- 40$	$+ 85$	$∘C^\circ\text{C}$
Operating Case Temperature	$T_{OP}$	$0$	$+ 70$	$∘C^\circ\text{C}$
Power Supply Voltage	$V_{CC}$	$- 0.5$	$+ 3.6$	$V\text{V}$
Relative Humidity (non-condensing)	$R H$	$0$	$85$	$%\%$
Damage Threshold, each Lane	$TH_d$	$3.5$		$dBm\text{dBm}$

Parameter	Symbol	Min	Typical	Max	Unit
Operating Case Temperature	$T_{OP}$	$0$	$25$	$70$	$∘C^\circ\text{C}$
Power Supply Voltage	$V_{CC}$	$3.135$	$3.3$	$3.465$	$V\text{V}$
Power Supply Current	$I_{CC}$			$1000$	$mA\text{mA}$
Data Rate, per Lane	$D R$		$10.3125$	$11.2$	$Gbps\text{Gbps}$
Control Input Voltage High	$V_{IH}$	$2.0$		$V_{CC}$	$V\text{V}$
Control Input Voltage Low	$V_{IL}$	$GN D$		$0.8$	$V\text{V}$
Link Distance (SMF)	$L$	$0.002$		$10$	$km\text{km}$

Parameter	Symbol	Min	Typ	Max	Unit
Center Wavelength Lane 0	$λc0\lambda_{c0}$	$1264.5$	$1271$	$1277.5$	$nm\text{nm}$
Center Wavelength Lane 1	$λc1\lambda_{c1}$	$1284.5$	$1291$	$1297.5$	$nm\text{nm}$
Center Wavelength Lane 2	$λc2\lambda_{c2}$	$1304.5$	$1311$	$1317.5$	$nm\text{nm}$
Center Wavelength Lane 3	$λc3\lambda_{c3}$	$1324.5$	$1331$	$1337.5$	$nm\text{nm}$
Average Output Power (each lane)	$P_{OUT}$	$- 8.2$		$0.5$	$dBm\text{dBm}$
Optical Modulation Amp (OMA) (each lane)	$P_{OMA}$	$- 5.2$		$3.0$	$dBm\text{dBm}$
Extinction Ratio (ER)	$ER$	$3.5$			$dB\text{dB}$
Total Average Launch Power	$P_{Total}$			$8.3$	$dBm\text{dBm}$
RINxDFB	$R I N$			$- 128$	$dB/Hz\text{dB/Hz}$
Optical Eye Mask		\multicolumn{4}{c	}{Compliant with IEEE 802.3ba (Clause 88)}

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Center Wavelength Lane 0	$λc0\lambda_{c0}$	$1264.5$	$1271$	$1277.5$	$nm\text{nm}$
Center Wavelength Lane 1	$λc1\lambda_{c1}$	$1284.5$	$1291$	$1297.5$	$nm\text{nm}$
Center Wavelength Lane 2	$λc2\lambda_{c2}$	$1304.5$	$1311$	$1317.5$	$nm\text{nm}$
Center Wavelength Lane 3	$λc3\lambda_{c3}$	$1324.5$	$1331$	$1337.5$	$nm\text{nm}$
Average Receive Power (each lane)	$P_{IN}$	$- 12.6$		$1.0$	$dBm\text{dBm}$
Receiver Sensitivity (OMA) (each lane)	$S_{RX}$			$- 11.5$	$dBm\text{dBm}$	Per IEEE 802.3ba, ER=3.5dB, BER < $10^{-12}$
Receiver Overload (each lane)	$P_{OL}$	$1.0$			$dBm\text{dBm}$
LOS Assert	$LOS_A$	$- 30$			$dBm\text{dBm}$
LOS De-assert	$LOS_D$			$- 14$	$dBm\text{dBm}$
LOS Hysteresis	$LOS_H$	$0.5$			$dB\text{dB}$

Additional information

Brand	OEM
Model	QSFP+ 40G LR4 1310nm 10km

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1 review for QSFP+ 40G LR4 1310nm 10km Optical Transceiver

Tom – 10/08/2025

Rated 5 out of 5
QSFP+ 40G LR4 1310nm 10km Optical Transceiver

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4. FAQ Section

5. Installation Steps (If Applicable)

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