A polarization maintaining EDFA uses erbium-doped optical fiber and an optical pump to provide gain for signals typically in the 1530–1565 nm (C-band) range, the low-loss region of silica fiber. The amplifier incorporates polarization maintaining (PM) fiber and PM components so that the signal’s polarization direction is preserved from input to output—a key requirement for polarization-dependent systems such as interferometers, coherent receivers, and polarization multiplexed links. These EDFAs also offer low noise figure and high gain, helping to boost optical power while minimizing distortion and spontaneous emission noise, crucial for high-capacity, long-distance fiber systems

High Polarization Stability

The amplifier preserves the input polarization state throughout the amplification process. This stability is critical for coherent optical links, interferometers, and polarization-sensitive sensing systems where even minor polarization drift can degrade performance.

Low Noise, High Gain Amplification

With high optical gain and a low noise figure, the amplifier strengthens weak signals while maintaining excellent signal-to-noise ratio. This enables longer transmission distances and more accurate optical measurements.

Optimised C-Band Performance

Designed for the C-band, the system operates in the lowest-loss region of standard optical fiber. This makes it suitable for dense wavelength division multiplexing (DWDM) and high-capacity optical networks.

High Output Power Capability

The amplifier delivers stable output power up to hundreds of milliwatts, supporting booster and pre-amplifier roles in demanding optical systems.

Excellent Optical Isolation

High input and output isolation protect upstream components from back reflections, improving overall system stability and reliability.

Remote Monitoring and Control

Integrated electronic control interfaces allow remote configuration, monitoring, and diagnostics, simplifying integration into automated test setups and network environments.

Robust and Compact Design

The amplifier is engineered for continuous operation with thermal stability and long-term reliability, making it suitable for both laboratory and industrial environments.

Optical Communication Networks

Used in long-haul, metro, and coherent optical communication systems to amplify signals while maintaining polarization integrity, enabling higher data rates and improved transmission reliability.

Coherent Transceivers and Modulation Systems

Supports advanced modulation formats by preserving polarization alignment, which is essential for accurate demodulation in coherent receivers.

Fiber Optic Sensing and Interferometry

Enhances signal strength in interferometric sensors and distributed sensing systems without disturbing polarization, improving measurement accuracy and repeatability.

Photonics Research and Development

Provides stable amplification for experiments involving polarization-dependent components, lasers, and optical amplifiers, simplifying experimental setups.

Coherent LiDAR and Optical Ranging

Used in emerging coherent LiDAR systems where polarization stability improves detection sensitivity and range accuracy.

Precision Fiber Laser Systems

Acts as a pre-amplifier or booster in polarization-sensitive fiber laser architectures used for spectroscopy, nonlinear optics, and scientific instrumentation.

United Spectrum Instruments offers deep expertise in optical amplification and photonic system integration. We support customers with application-specific guidance, system configuration, testing assistance, and reliable after-sales service. Our focus on precision photonics ensures that each Polarization Maintaining EDFA is optimally matched to your communication, sensing, or research requirements. With responsive local support and strong technical competence, United Spectrum Instruments helps you deploy advanced optical amplification solutions with confidence and long-term reliability.