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Wavelength Meters


BRISTOL INSTRUMENTS’ wavelength meters provide accurate information for scientists and engineers who need to know the exact wavelength of their lasers. These systems use proven Michelson or Fizeau interferometer-based technology to measure absolute wavelength to a guaranteed accuracy as high as ±0.0001 nm. To achieve the reliable accuracy that is expected from Bristol Instruments, all of its wavelength meters include a built-in wavelength standard for continuous calibration. Systems are available for CW and pulsed lasers that operate at wavelengths from 375 nm to 12 µm. They are used for scientific applications at universities, government laboratories, and industry, and for DWDM testing applications at fiber communication component and system manufacturers.








621 Series:  CW lasers, 375 nm – 12 µm

The best way to determine the absolute wavelength of CW lasers is with the 621 Series Laser Wavelength Meter. This system provides real-time laser wavelength information measured to an accuracy as high as ±0.2 parts per million. This accuracy is guaranteed by continuous calibration with a built-in wavelength standard which ensures the reliable accuracy that is needed to generate the most meaningful experimental results.



821 Series:  Pulsed and CW lasers, 350 – 1700 nm

The 821 Series Pulsed Laser Wavelength Meter provides accurate wavelength information for researchers who need to know the exact wavelength of their CW laser, pulsed laser, or OPO. A unique Fizeau interferometer-based design measures absolute wavelength to an accuracy of ±600 MHz. A built-in wavelength standard is used for automatic calibration to ensure greater confidence in the experimental results.


521 Series:  CW lasers, 400 – 1700 nm, low-priced alternative

The 521 Series Laser Wavelength Meter is for scientists and engineers who need to know the absolute wavelength of their CW laser, but do not need to know it to the highest accuracy available. The model 521 is a unique system that couples accurate wavelength measurement and affordability in a compact instrument.



WDM WAVELENGTH TESTING

 




228 Series:  Single-wavelength, CW signals

The 228 Series Optical Wavelength Meter combines high accuracy and exceptional repeatability to achieve the most meaningful results for DWDM test applications. With a wavelength accuracy as high as ±0.3 pm, the model 228 is the ideal instrument for precise wavelength characterization of tunable DWDM lasers, DFB lasers, and VCSELs. It can also be used to calibrate passive DWDM component test equipment such as optical spectrum analyzers.






328 Series:  Single-wavelength, CW and modulated signals

The 328 Series Optical Wavelength Meter is virtually identical to the model 228, except that it employs a fast Fourier transform analysis of the optical signal. This results in the ability to measure the wavelength of CW and modulated DWDM lasers to an accuracy as high as ±0.3 pm.






428 Series:  Multi-wavelength, CW and modulated signals

The 428 Series Multi-Wavelength Meter simultaneously measures wavelength, power, and OSNR in order to fully characterize DWDM components and DWDM transmission systems. The model 428 combines high accuracy and exceptional reliability to achieve the most meaningful test results. Straightforward operation and rugged design satisfy the needs of both the R&D scientist and the manufacturing engineer.