Juniper 40KM Optical Transceiver (QSFP-40G-ER4)

About Juniper QSFP-40G-ER4 40GBASE-ER4 40KM Optical Transceiver in Bangladesh

The Juniper QSFP-40G-ER4 is a 40Gbps QSFP+ optical transceiver designed for long-distance Ethernet connectivity over single-mode fiber. Supporting the 40GBASE-ER4 standard, this optical module provides transmission distances of up to 40km using duplex LC connectivity and 1310nm optical technology.

Juniper identifies the JNP-QSFP-40GE-ER4 as a QSFP+ 40GBase-ER4 optic supporting transmission of up to 40km over single-mode fiber. :contentReference[oaicite:2]{index=2}

Juniper QSFP-40G-ER4 40G Optical Transceiver Specifications & Features

Overview

The Juniper QSFP-40G-ER4 provides a high-bandwidth 40GbE optical connection for long-distance network links. Its 40GBASE-ER4 architecture uses four optical lanes and is designed for transmission over single-mode fiber at distances of up to 40km.

The optic uses duplex LC connectivity and 1310nm optical technology, making it suitable for long-reach single-mode fiber infrastructure. Juniper lists JNP-QSFP-40GE-ER4 as a 40GBase-ER4 QSFP+ optic for up to 40km transmission on SMF. :contentReference[oaicite:3]{index=3}

Buy Juniper QSFP-40G-ER4 40KM Optical Transceiver in Bangladesh

Purchase the Juniper QSFP-40G-ER4 40GBASE-ER4 40KM QSFP+ Optical Transceiver from Datacom Technologies (BD). We supply Juniper networking optics, QSFP+ transceivers, SFP/SFP+ modules, enterprise networking hardware and data center connectivity products in Bangladesh with competitive pricing, technical consultation and nationwide delivery.

Key Features

• 40Gbps Ethernet connectivity
• 40GBASE-ER4 optical standard
• Up to 40km transmission distance
• 1310nm optical wavelength
• QSFP+ form factor
• Duplex LC connector
• Single-mode fiber support
• 4 optical lanes
• 10Gbps per optical lane
• Designed for long-distance network connectivity
• Suitable for data center interconnection
• Suitable for metro and campus network applications
• Hot-pluggable optical module

Applications

• 40GbE Data Center Interconnect
• Long-Distance Ethernet Links
• Enterprise Data Center Networks
• Campus Network Connectivity
• Metro Network Links
• Core Network Connectivity
• Server-to-Switch Connectivity
• Switch-to-Switch Uplinks
• Data Center Backbone Networks
• Long-Reach Single-Mode Fiber Links

40Gbps High-Speed Connectivity

The Juniper QSFP-40G-ER4 provides an aggregate data rate of 40Gbps, making it suitable for high-bandwidth network connections between switches, routers and other compatible networking equipment.

Its 40GBASE-ER4 architecture is intended for longer-reach Ethernet applications where short-range multimode optics or 10km LR4 optics are insufficient.

40KM Transmission Distance

The QSFP-40G-ER4 is designed for optical transmission distances of up to 40km over compatible single-mode fiber. Juniper's Hardware Compatibility Tool specifically identifies JNP-QSFP-40GE-ER4 as a 40km 40GBase-ER4 optic. :contentReference[oaicite:4]{index=4}

Actual achievable distance depends on fiber characteristics, optical loss, connector quality, link budget, patch panels and the networking equipment used at both ends of the connection.

1310nm Optical Wavelength

The transceiver operates around the 1310nm optical wavelength used by 40GBASE-ER4 long-reach Ethernet optics.

ER4 optics use multiple optical wavelengths across the 1310nm region to carry the four optical lanes over single-mode fiber.

Single-Mode Fiber Support

The Juniper QSFP-40G-ER4 is designed for single-mode fiber (SMF). Juniper identifies the optic as a 40GBASE-ER4 module for transmission up to 40km over SMF. :contentReference[oaicite:5]{index=5}

For a 40km deployment, use appropriate single-mode fiber infrastructure and ensure that the complete optical link remains within the supported optical budget.

Duplex LC Connector

The QSFP-40G-ER4 uses a duplex LC optical interface. Juniper's Hardware Compatibility Tool lists the connector as Duplex LC PC/UPC. :contentReference[oaicite:6]{index=6}

The duplex LC connection uses separate optical paths for transmitting and receiving data over the single-mode fiber link.

QSFP+ Form Factor

The Juniper QSFP-40G-ER4 uses the QSFP+ form factor. QSFP+ modules are designed to provide high-density 40GbE connectivity while occupying a compact network-device port.

The module is suitable for compatible Juniper switches, routers and networking platforms that support the relevant 40GBASE-ER4 optic.

Four Optical Lanes

40GBASE-ER4 uses four optical channels, with each lane carrying approximately 10Gbps of data. The four optical signals are combined for aggregate 40Gbps transmission.

This multi-wavelength architecture enables 40Gbps Ethernet transmission over a duplex single-mode fiber connection.

Long-Reach Data Center Connectivity

The 40km reach of the QSFP-40G-ER4 makes it useful for network links extending beyond typical data center short-reach applications.

It can be used for data center interconnection, campus networks, metro Ethernet links and other long-distance 40GbE applications where compatible single-mode fiber infrastructure is available.

Data Center Interconnect

The Juniper QSFP-40G-ER4 can provide high-speed optical connectivity between geographically separated network locations where the distance is within the supported 40km optical range.

Before deployment, verify the optical link budget, fiber route, patch-panel loss and compatibility of both network endpoints.

Juniper Compatibility

Juniper's Hardware Compatibility Tool identifies JNP-QSFP-40GE-ER4 as a 40GBase-ER4 40km optic. Juniper product documentation also lists this optic among supported 40G Ethernet optics. :contentReference[oaicite:7]{index=7}

Compatibility should be verified against the exact Juniper switch or router model, Junos version and supported interface module before purchase or deployment.

Optical Link Budget

For a 40km ER4 deployment, optical performance depends on the total link budget rather than distance alone.

• Single-mode fiber attenuation
• Connector insertion loss
• Patch-panel loss
• Splice loss
• Transmitter optical power
• Receiver sensitivity
• Fiber route length
• Optical component quality

Always calculate the complete optical budget before deploying a 40km link.

Juniper QSFP-40G-ER4 vs QSFP-40G-LR4

Compatibility Considerations

The QSFP-40G-ER4 should only be installed in networking equipment that supports the appropriate Juniper 40GBASE-ER4 optic.

• Compatible Juniper QSFP+ port
• 40GBASE-ER4 support
• Compatible Junos software
• Single-mode fiber infrastructure
• Duplex LC connectivity
• Optical link budget within specification
• Compatible optics at the remote endpoint

Do not assume that every QSFP+ port supports every 40G optical module. Verify the exact hardware compatibility before installation.

Benefits

• 40Gbps high-speed networking
• Up to 40km reach
• 40GBASE-ER4 support
• 1310nm optical technology
• Single-mode fiber connectivity
• Duplex LC interface
• Compact QSFP+ form factor
• Suitable for long-distance Ethernet links
• Ideal for data center interconnects
• Suitable for enterprise and metro network deployments

Why Buy from Datacom Technologies (BD)?

Datacom Technologies (BD) supplies Juniper networking optics, QSFP+ transceivers, SFP/SFP+ modules, enterprise switches, routers and data center networking hardware in Bangladesh. Customers can receive competitive pricing, technical consultation, deployment assistance and nationwide delivery.

• Call/WhatsApp: +8801748173213
• Email: sales@datacom.com.bd
• Alternative Email: datacomtechnologiesbd@gmail.com
• Office: Tropical Center, 218, Dr. Kudroti Khuda Road, New Elephant Road, Dhaka-1205, Bangladesh

Frequently Asked Questions (FAQ)

Q1: What is the Juniper QSFP-40G-ER4?
The Juniper QSFP-40G-ER4 is a 40Gbps QSFP+ 40GBASE-ER4 optical transceiver designed for transmission up to 40km over single-mode fiber.

Q2: What is the Juniper part number?
Juniper's Hardware Compatibility Tool identifies the product as JNP-QSFP-40GE-ER4. :contentReference[oaicite:8]{index=8}

Q3: What is the transmission distance?
The optic supports transmission distances of up to 40km over compatible single-mode fiber. :contentReference[oaicite:9]{index=9}

Q4: What is the data rate?
The QSFP-40G-ER4 provides 40 Gigabit Ethernet connectivity.

Q5: What wavelength does it use?
It operates in the 1310nm optical region.

Q6: What fiber does QSFP-40G-ER4 use?
It is designed for single-mode fiber (SMF).

Q7: What connector does the module use?
The module uses a duplex LC connector. Juniper's Hardware Compatibility Tool specifies Duplex LC PC/UPC. :contentReference[oaicite:10]{index=10}

Q8: Is QSFP-40G-ER4 a QSFP+ module?
Yes. Juniper identifies JNP-QSFP-40GE-ER4 as a QSFP+ 40GBase-ER4 optic. :contentReference[oaicite:11]{index=11}

Q9: Is QSFP-40G-ER4 suitable for 40km data center links?
Yes. Its 40GBASE-ER4 specification is designed for long-reach 40GbE connectivity over single-mode fiber.

Q10: Is QSFP-40G-ER4 compatible with every Juniper QSFP+ port?
No. Compatibility depends on the exact Juniper platform, interface module and software. Check the Juniper Hardware Compatibility Tool before deployment.

Q11: What is the difference between ER4 and LR4?
40GBASE-ER4 is designed for up to 40km, while 40GBASE-LR4 is generally designed for up to 10km. Juniper's optics documentation identifies ER4 as the 40km option. :contentReference[oaicite:12]{index=12}

Q12: Is QSFP-40G-ER4 suitable for multimode fiber?
No. It is designed for single-mode fiber. :contentReference[oaicite:13]{index=13}

Q13: Can third-party compatible optics be used?
Third-party compatible versions are available, but compatibility should be verified against the exact Juniper platform and software environment before deployment.

Q14: Where can I buy Juniper QSFP-40G-ER4 in Bangladesh?
You can contact Datacom Technologies (BD) for Juniper optical transceivers, QSFP+ modules, enterprise networking hardware and data center connectivity products with competitive pricing and nationwide delivery.