428A/438 Bristol Series Wavelength Meters for Optical Communications

Features

• Wavelength measurement accuracy up to ±0.3 pm

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

• Measurement confidence level ≥ 99.7 %, NIST traceable

• Simultaneous optical power measurement with accuracy up to ± 0.5 dB

• Automatic signal-to-noise calculation

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

• 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 and time resolution of 1 ms

• Convenient touch screen display of measurement data

• Communication via USB, Ethernet, GPIB

• Solid construction designed for production environments

The 428/438 series multi-wavelength meters combine Michelson interferometry with fast Fourier transform analysis for wavelength, power, and signal-to-noise ratio measurements. Featuring high accuracy, fast measurement speed, easy operation, and a solid structure, the 438 provides highly accurate, reliable, and efficient WDM wavelength testing required to meet production processes.