Cisco Compatible GLC-ZX-SM / GLC-ZX-SMD / GLC-ZX-SM-RGD / SFP-GE-Z SFP Transceiver | 1GBASE-ZX, LC Duplex, SMF (80km)
Product Overview
The Cisco Compatible GLC-ZX-SM / GLC-ZX-SMD / GLC-ZX-SM-RGD / SFP-GE-Z SFP Transceivers are high-performance 1Gbps single-mode optical modules designed for ultra-long-distance transmission up to 80 kilometers over single-mode fiber (SMF). Operating at a 1550nm wavelength, these modules are ideal for telecom backbone networks, metro core links, and long-distance enterprise connectivity.
This product family includes multiple variants to meet different deployment requirements:
- GLC-ZX-SM – Standard 80km ZX module
- GLC-ZX-SMD – ZX module with DOM/DDM monitoring
- GLC-ZX-SM-RGD – Industrial-grade rugged version
- SFP-GE-Z – Cisco equivalent 1000BASE-ZX module
All models are fully compatible with Cisco platforms and provide reliable, carrier-grade performance with a cost-effective alternative to OEM optics.
Key Features
- Supports 1Gbps data rate (1000BASE-ZX)
- 1550nm DFB laser for single-mode fiber
- Up to 80km transmission over SMF
- LC duplex connector interface
- Hot-pluggable SFP form factor
- Fully compatible with Cisco SFP ports
- MSA compliant and fully tested
Variant Highlights:
- GLC-ZX-SMD: Supports DOM/DDM monitoring
- GLC-ZX-SM-RGD: Industrial-grade, extended temperature range
- SFP-GE-Z: Cisco equivalent ZX model
Technical Specifications
General Parameters
- Transmission Distance: Up to 80km
- Fiber Type: Single-Mode Fiber (SMF)
Optical Characteristics
- Transmitter Type: DFB Laser
- Receiver Type: APD Photodiode
- RX Sensitivity: ≤ -24 dBm
Electrical & Environmental
- Power Consumption: ≤ 1.2W
- Industrial (RGD): -40°C to 85°C
- Storage Temperature: -40°C to 85°C
Additional Features
- DOM/DDM (GLC-ZX-SMD only):
- TX/RX optical power monitoring
- Temperature & voltage monitoring
Compliance
- IEEE 802.3z (1000BASE-ZX) (industry extension)
Applications
- Telecom backbone networks
- Metro core and aggregation networks
- Long-distance enterprise connectivity
- Data center interconnect (DCI)
- Industrial and outdoor deployments (RGD)
Model Comparison
Important Notes
- 1000BASE-ZX is not part of the IEEE standard, but is widely used as an industry extension for long-distance 1G transmission.
- For distances approaching 80km, proper optical link budget planning is essential. In some deployments, additional components such as:
- Optical attenuators (for short links)
- Optical amplifiers (EDFA)
may be required depending on fiber conditions.
Why Choose This Product
The Cisco-compatible GLC-ZX-SM / SMD / RGD / SFP-GE-Z modules are designed for ultra-long-distance, carrier-grade networks. They offer:
- Extended reach up to 80km
- Reliable performance for mission-critical links
- Flexible options for monitoring and harsh environments
- Cost-effective alternative to OEM optics
They are ideal for networks where distance, reliability, and scalability are critical.
When to Choose These Modules
Choose this ZX series if:
✔ Distance requirement is up to 80km
✔ Using single-mode fiber (SMF)
✔ Deploying in telecom or backbone networks
Choose specific models based on needs:
- GLC-ZX-SMD → Need monitoring & diagnostics
- GLC-ZX-SM-RGD → Industrial/harsh environments
- GLC-ZX-SM / SFP-GE-Z → Standard long-distance use
Choose EX (40km) modules if:
✔ Distance requirement is shorter
✔ Lower cost is preferred
Cisco compatible GLC-ZX-SM, GLC-ZX-SMD, GLC-ZX-SM-RGD, SFP-GE-Z, 1G SFP ZX module, 1000BASE-ZX transceiver, Cisco SFP 1550nm 80km, LC SMF SFP long distance
