The Photonetics 3624 BT-20 is a benchtop Erbium Doped Fiber Amplifier (EDFA) engineered for high-gain, low-noise optical signal amplification across the C-band centered at 1550 nm. This unit delivers small-signal gain exceeding 35 dB at 1530 nm and 25 dB at 1550 nm, with saturated output power up to +20 dBm and a noise figure of 4.5 dB typical. The BT-20 employs 980 nm pump diodes in a co-propagating configuration with erbium-doped silica fiber co-doped with aluminum to achieve spectrally flat response. Polarization-maintaining fiber is available.
Technical Specifications
• Amplifier Type: Erbium Doped Fiber Amplifier (EDFA)
• Wavelength Range: C-band, 1530 nm to 1550 nm
• Small-Signal Gain: >35 dB at 1530 nm; 25 dB at 1550 nm
• Saturated Output Power: +20 dBm
• Noise Figure: 4.5 dB (typical)
• Pump Wavelength: 980 nm
• Pump Configuration: Co-propagating
• Fiber: Erbium-doped silica, aluminum co-doped
• Power Supply: DC +12V / GND
• Power Consumption: Maximum 35 W
– Key Features
• FC/APC connectors for optical input and output
• RS232 serial interface for remote control and monitoring
• Launched pump power and laser diode current displays
• Constant Power / Constant Current / Limit mode selection
• Benchtop form factor for laboratory and field deployment
– Typical Applications
• Long-haul optical transmission systems
• Optical distribution network amplification
• Optical fiber-based telecommunications networks
• Laboratory testing and signal characterization
– Compatibility & Integration
The BT-20 integrates into C-band optical systems requiring high-gain amplification with low noise degradation. Standard FC/APC connectors enable straightforward integration into installed fiber infrastructure.
