The Fitel 2-Stage EDFA C-band is a two-stage erbium-doped fiber amplifier engineered for long-haul and metro optical networks requiring high gain, low noise performance, and precise gain flatness. Operating across the C-band (1530 nm to 1565 nm), this amplifier delivers up to 35 dB gain with dual pump laser architecture while maintaining a noise figure as low as 4.5 dB in optimized configurations.
Technical Specifications
Optical Performance
• Operating wavelength: C-band (1530 nm – 1565 nm)
• Gain: Up to 35 dB (dual pump design); 50 dB achievable for small input signals
• Noise figure: Typically 5 dB; optimized configurations 4.5 dB
• Output power: Up to +26 dBm; select models reach +33 dBm or 43 dBm saturated
• Input power range: −12 dBm to +7 dBm
• Gain flatness: ±0.5 dB typical (critical for DWDM systems)
Pump Configuration
• Dual pump lasers: 980 nm and 1480 nm
• Alternative single-pump 980 nm co-pumped designs available
Connectors & Control
• Standard APC connectors; others available on request
• Adjustable output power via automatic current control (ACC)
• USB software control interface
• RS232 remote control port; optional TCP/IP/Ethernet connectivity
• Real-time monitoring: input/output power, gain, temperature
Protection & Safety
• Pump laser over-temperature protection
• Pump laser current limit protection
• Input power loss detection with automatic pump shutdown
• Key-lock switch and BNC interlock
• Automatic power reduction (APR) for modules exceeding 21.3 dBm output
– Key Features
• Two-stage configuration optimized for extended transmission distances
• Low noise figure enables weak signal recovery and extended span capability
• Tight gain flatness (±0.5 dB) eliminates tilt correction in multichannel systems
• Dual pump architecture maximizes efficiency and saturation characteristics
• Comprehensive monitoring and protection for unattended operation
• Modular design integrates into existing optical infrastructure
– Typical Applications
• Long-haul optical communication networks
• Metro optical networks
• Dense wavelength division multiplexing (DWDM) systems
• Fiber to the home (FTTH) deployments
• Cable television (CATV) infrastructure
– Compatibility & Integration
The 2-Stage EDFA C-band integrates into C-band optical systems via standard APC connectors. Control interfaces (USB, RS232, optional TCP/IP) permit integration into network management systems and automated optical line terminals. Dual pump capability and adjustable gain control adapt the amplifier to varied signal levels and system requirements across metro and long-haul deployments.
