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Accuracy. Reliability. Confidence.

Interferometer-based instrumentation from the most trusted name in laser wavelength measurement, spectral analysis, and non-contact thickness measurement.

High-Accuracy Wavelength Measurement
High-Resolution Spectral
optical transceiver testing
Non-Contact Thickness Measurement

It’s our business to be exact!

Bristol Instruments is a world leader in optical interferometer-based instrumentation. In fact, our wavelength meters are used across all seven continents. Yes, we're even in Antarctica!

Known for our reliable accuracy and unrivaled level of customer support, Bristol Instruments products are the preferred choice for research universities, government laboratories, and industry leaders around the world.

Keeping you and your laser on the same wavelength

Industries We Serve

Scientists and engineers all over the globe trust our precision instruments to help advance their research, product development, and production processes.
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Providing researchers with the confidence that comes from using the most reliably accurate wavelength meters and spectrum analyzers.


Wavelength measurement and spectral analysis for optical transceiver and WDM transmission system testing to meet the exacting needs of R&D scientists and manufacturing engineers.

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Optical Metrology

Precise, non-contact, multi-layer thickness measurement to meet the testing requirements of R&D, production, and quality assurance applications.