Bristol 428/438 Series Multi-Wavelength Meters for Optical Communications

The Bristol 428/438 Series Multi-Wavelength Meters combine a Michelson interferometer with Fast Fourier Transform analysis for wavelength, power, and signal-to-noise measurements. Featuring high accuracy, fast measurement speeds, simple operation, and solid construction, the 438 provides the high accuracy, reliability, and efficiency in WDM wavelength testing needed to meet production process requirements.

• Wavelength measurement accuracy up to ±0.3 pm

• Built-in standard frequency stabilised HeNe laser for continuous calibration

• Measurement confidence level ≥ 99.7 %, NIST traceable

• Simultaneous optical power measurement with ± 0.5 dB accuracy

• Automatic signal-to-noise calculation

• Measurement wavelength range 1270-1650 nm; 1000-1680 nm, covering C, L, T, O optical bands

• Measurement rate 10 Hz

• High sensitivity -40 dBm (0.1 μW)

• Can be used to measure continuous lasers or modulated signals

• Measurement rates up to 1 kHz, time resolution 1 ms

• Convenient touch screen display of measurement data

• USB, Ethernet, GPIB communication possible

• Solid construction designed for production environments