The Newport FPA-35 is a fiber pre-amplifier that boosts weak optical signals in fiber optic communication and sensing systems before further processing or detection. By amplifying signals at the receiver front end, it enhances sensitivity and extends transmission reach across telecommunications, optical sensing, and research applications.
Technical Specifications
• Operating Wavelength: C-band (1528 to 1563 nm)
• Input Power Range: -45 dBm to -25 dBm
• Small Signal Gain: 35 to 45 dB typical; minimum 28 dB at -30 dBm input
• Noise Figure: 4.5 dB
• Return Loss: ≥50 dB
• Polarization Dependent Gain: ≤0.3 dB
• Polarization Mode Dispersion: ≤0.5 ps
• Input/Output Isolation: >35 dB
• Fiber Type: Corning SMF-28
• Connectors: FC/APC
• Power Supply: +5 V DC (typical consumption ~20 W)
• Dimensions: Approximately 90 mm × 70 mm × 20 mm (module configuration)
– Key Features
• Automatic Power Control (APC) mode adjusts output power to minimize fluctuations across varying input levels
• Integrated pump laser protection and alarm circuits
• Real-time input and output optical power monitoring
• TTL RS-232 interface for remote pump current adjustment and status monitoring
• Optional Ethernet (SNMP) monitoring capability
• Low polarization-dependent gain variation ensures predictable performance across signal states
– Typical Applications
• Long-haul telecommunications signal recovery
• Distributed optical sensing systems
• Weak-signal detection in research and laboratory setups
• Receiver sensitivity enhancement in fiber optic links
– Compatibility & Integration
The FPA-35 integrates with fiber optic modulators and photonic subsystems. It pairs with external bias control boards (such as the M-CB) for coordinated operation in intensity-modulated systems and supports OEM integration into larger optical assemblies.
