Which brand of extinction ratio meter with an accuracy of ±0 05dB is the best for procurement

Thorlabs ERM2xx and Agiltron PERM series are top choices for high-accuracy extinction ratio measurements, offering ±0.05 dB precision, broad wavelength coverage, and versatile fiber compatibility.

Thorlabs ERM2xx Series

The ERM2xx series from Thorlabs provides benchtop extinction ratio meters with high accuracy and fast measurements using a rotating polarizer and photodiode detection. Key features include:

• Accuracy: ±0.05 dB (dependent on calibration)
• Wavelength coverage: 400–2500 nm across three models (ERM210: 400–700 nm, ERM200: 600–1600 nm, ERM220: 1200–2500 nm)
• Connector compatibility: FC/PC, FC/APC, LC/PC, SC/PC with exchangeable adapters
• Software control: Remote operation via optical power monitor software
• Additional features: Monitor output for active alignment, aperture lock for transport protection, and compatibility with broadband sources like ASE or SLD for simplified alignment

Agiltron PERM Series

The PERM benchtop meter by Agiltron is designed for precise PER and polarization angle measurements:

• Accuracy: High precision suitable for ±0.05 dB applications
• Wavelength coverage: 400–2500 nm
• Connector compatibility: FC/PC, FC/APC, LC/PC, SC/PC, with adaptors for bare fibers
• Ease of use: Push-button operation, USB interface for remote control and data logging
• Measurement principle: Rotating polarizer in front of a photodiode, providing real-time PER and misalignment angle readings

OZ Optics DTS0067

The OZ Optics DTS0067 meter is also a capable option:

• Accuracy: High precision, suitable for QA and alignment tasks
• Wavelength coverage: 1290–1650 nm
• Features: Real-time and logging modes, neutral density filters for high-power measurements, computer interface for automated alignment
• Use case: Ideal for polarization-maintaining component testing and automated QA processes

Recommendation

For procurement with ±0.05 dB accuracy, the Thorlabs ERM2xx and Agiltron PERM series are the most versatile and widely used in professional labs due to:

• Broad wavelength coverage
• High measurement precision
• Flexible connector compatibility
• Remote operation and data logging capabilities OZ Optics DTS0067 is suitable for specialized QA or automated alignment setups, particularly in the 1290–1650 nm range. For procurement, consider your wavelength requirements, connector types, and software integration needs. Both Thorlabs and Agiltron provide strong support and calibration services, ensuring long-term measurement reliability.