Juniper 100GBase-ER4 Single-Mode Fibre 40km 1310nm Duplex LC Connector CFP Transceiver Module – CFP-GEN2-CGE-ER4

Juniper 100GBASE-ER4 CFP2 Transceiver — 40km Single-Mode Fiber

The Juniper CFP-GEN2-CGE-ER4 is a second-generation CFP2 (CFP Gen2) 100GBASE-ER4 optical transceiver delivering 100GbE over single-mode fiber up to 40km at 1310nm via duplex LC connector — providing extended-reach 100G SMF connectivity for Juniper MX and PTX platforms in a more compact, lower-power CFP2 form factor compared to the original CFP.

Key Features

• 100GBASE-ER4 CFP2 (Gen2) for 40km extended-reach 100GbE over single-mode fiber
• Smaller, lower-power CFP2 form factor vs. original CFP — two CFP2 slots per CFP slot footprint
• 4-lane LAN-WDM at 1310nm for 100G transmission over standard OS1/OS2 SMF
• Duplex LC connector for compatibility with standard SMF LC patch panel infrastructure
• Juniper-genuine for verified compatibility with Juniper MX and PTX CFP2-capable ports

Product Specifications

• Part Number: CFP-GEN2-CGE-ER4
• Manufacturer: Juniper Networks
• Form Factor: CFP2 (CFP Gen2)
• Speed: 100GbE (100GBASE-ER4)
• Wavelength: 1310nm (4-lane LAN-WDM)
• Connector: Duplex LC
• Fiber Type: Single-Mode Fiber (SMF, G.652)

Transceiver & Interface Specifications

• Max Distance: 40km over OS1/OS2 SMF
• Data Rate: 4 x 25Gbps LAN-WDM lanes
• TX Power: 0 to +4 dBm per lane
• RX Sensitivity: -20 dBm (min)
• Power Consumption: Typically 6–8W (CFP2 — lower than CFP at ~12W)
• Operating Temperature: 0°C to 70°C (commercial)

Use Cases

• Service provider metro 100GbE interconnect over 40km dark fiber on Juniper MX/PTX
• Data center interconnect (DCI) requiring 40km reach beyond 10km LR4 capability
• Upgrading from CFP ER4 optics to lower-power CFP2 form factor on compatible platforms
• Long-haul client-side 100G optics for enterprise inter-campus links over SMF

Compatibility

• Compatible with Juniper MX and PTX platforms with CFP2 (CFP Gen2) 100G port slots
• Not compatible with CFP (original) or QSFP28 ports — verify platform port type before ordering
• Requires OS1/OS2 single-mode fiber with duplex LC connectors
• IEEE 802.3ba 100GBASE-ER4 compliant

Frequently Asked Questions

What is the difference between CFP-GEN2-CGE-ER4 and 740-049763?

Both are Juniper 100GBASE-ER4 40km transceivers, but differ in form factor — the CFP-GEN2-CGE-ER4 uses the smaller CFP2 (Gen2) form factor, while the 740-049763 uses the original larger CFP form factor. CFP2 offers lower power consumption and higher port density on compatible platforms. Verify your MX or PTX port type (CFP vs CFP2) before ordering.

Can CFP2 and CFP modules be used interchangeably?

No — CFP and CFP2 are physically different form factors and are not interchangeable. CFP2 slots are smaller and cannot accept CFP modules. Some platforms support CFP2-to-CFP adapters, but this is platform-specific — verify with Juniper documentation.

Is the CFP-GEN2-CGE-ER4 suitable for 40km unamplified links?

Yes — 100GBASE-ER4 is designed for up to 40km over standard OS1/OS2 SMF without optical amplification. Link budget depends on fiber quality, connector cleanliness, and splice loss — for links approaching 40km, verify total optical loss against the transceiver”s TX/RX power specifications.

The Juniper CFP-GEN2-CGE-ER4 delivers 40km 100GBASE-ER4 extended-reach connectivity in the compact, power-efficient CFP2 form factor — providing the unamplified SMF reach required for metro DCI, service provider interconnect, and enterprise inter-site 100GbE links on Juniper MX and PTX platforms with CFP2 port capability.