ThorLabs YDFA100S Ytterbium-Doped Fiber Amplifier, Single Mode

The Thorlabs YDFA100S is a single-mode ytterbium-doped fiber amplifier engineered for signal amplification across the 1 µm wavelength band. This turnkey benchtop instrument delivers >22 dB small signal gain with a noise figure below 8 dB, making it suitable for preamplifier and booster configurations in ultrafast and continuous-wave applications. The amplifier operates in constant current mode and includes built-in input and output isolators for system protection. Dual control interfaces—front panel and USB—enable both manual operation and automated system integration. The compact package weighs 4.09 kg and connects via FC/APC connectors with standard single-mode fiber (HI1060).

– Technical Specifications

• Operating Wavelength Range: 1025–1075 nm
• Small Signal Gain: >22 dB @ −20 dBm input power
• Saturated Output Power: >19 dBm @ 3 dBm input power
• Typical Output Power: 20 dBm
• Noise Figure: <8 dB @ −20 dBm input power
• Polarization-Dependent Gain: <0.3 dB
• Output Connectors: FC/APC (2.0 mm narrow key)
• Fiber Type: Standard single-mode (HI1060)
• Operational Mode: Constant current
• Low dispersion design optimized for ultrafast pulse applications

– Key Features

• Built-in input and output isolators
• Polarization-independent operation
• Compact benchtop form factor
• USB interface for automated control and monitoring
• One-year standard warranty

– Typical Applications

• Telecommunications and optical communication systems
• Laser physics and ultrafast pulse amplification
• Optical sensing systems
• Preamplifier and booster stages in scientific research
• Automated manufacturing environments

– Compatibility & Integration

The YDFA100S integrates with standard fiber optic systems using FC/APC connectors and HI1060 single-mode fiber. USB connectivity enables seamless integration into automated test and measurement setups.