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228 Series Optical Wavelength Meter

Fast, accurate, and affordable wavelength testing of optical transceivers


Ideal for optical transceiver testing

The 228 Series Optical Wavelength Meter is the most affordable method to measure the wavelength of tunable transmitter lasers used in WDM applications.

With features such as high accuracy, 10 Hz measurement rate, and a broad operational range of 700 to 1650 nm, the model 228 provides precise, efficient, and versatile wavelength testing to satisfy the requirements needed for the production of optical transceivers.

Accurate wavelength measurement guaranteed

The 228 Optical Wavelength Meter uses a proven optical interferometer-based design to measure the wavelength of CW lasers to the highest accuracy available.

Two versions are offered. The model 228A is the most precise, providing an accuracy of ± 0.3 pm. For less exacting test requirements, the 228B system is a lower-priced alternative with a wavelength accuracy of ± 1.0 pm.

The wavelength accuracy of the 228 Optical Wavelength Meter is maintained over long periods of time because the system is continuously calibrated with a built-in HeNe laser. This is the ideal reference source because its wavelength is well-known and fixed by fundamental atomic structure.

To verify the accuracy of the model 228, every system is rigorously tested with laser sources that are traceable to NIST standards.

Designed for convenience, built to last

Operation of the 228 Optical Wavelength Meter is straightforward.

The optical signal enters the model 228 through an FC (UPC or APC) fiber-optic connector on the front panel. The system’s high sensitivity results in an input power requirement as low as -30 dBm (1 µW). Automatic attenuation instantly adjusts the signal for optimum performance.

The controls of the 228 system are conveniently located on the front panel along with the measurement display. The measured wavelength and power, maximum and minimum values, and total drift over time are reported in a variety of formats.

The measurement information can also be sent to a PC using a library of SCPI commands via standard USB or Ethernet interface, or an optional GPIB interface.

The rugged design of the 228 Optical Wavelength Meter provides long-term reliable operation, backed by a five-year warranty on all parts and labor. This results in less downtime and the lowest cost of ownership available.

  • Wavelength measured to an accuracy as high as ± 0.3 pm
  • Continuous calibration with built-in wavelength standard
  • Measurement confidence level ≥ 99.7%
  • Traceable to NIST standards
  • Optical power measured to an accuracy
    of ± 0.5 dB
  • Measurement rate of 10 Hz for reduced testing times
  • Broad operational range of 700 to 1650 nm
  • Interfacing via SCPI using USB, Ethernet, or GPIB
  • Rugged design for manufacturing environments
  • Includes 5 year warranty