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Agilent / HP / Keysight 86120B

86120B Multi-Wavelength Meter

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Description

This unit is a Michelson interferometer based instrument that measures wavelength and optical power of laser light in the 700 to 1650nm wavelength range. This has simultaneous measurements of multiple laser lines are performed allowing measurements of WDM (wavelength division multiplexed) signals and multiple lines of Fabry Perot lasers. Each laser line is assumed to have a linewidth of less than 10GHz.

Key Points

Measurement range from 1 to 200mm.

Accuracy within 5%.

Display laser coherence length and cavity optical length.

Characterize WDM spectra during installation and maintenance

Multiple and average wavelengths measured

Peak and total powers measured

Automatic signal-to-noise ratios calculated

Power and wavelength of up to 100 channels

Wavelength range covers 980nm pump lasers and 850nm VCSELs

Built-in routines for channel spacing and drift

Specifications

Wavelength:
Range: 700 to 1650nm (182 to 428GHz)

Absolute accuracy: laser lines separated by >30GHz ±3ppm (±0.005nm at 1550nm, ±0.004nm at 1310nm)

Differential accuracy: ±2ppm

Minimum resolvable separation: 20GHz (0.16 nm at 1550nm, 0.11nm at 1300nm) (equal power lines input)

Display resolution: 0.001nm, normal update mode; 0.01nm, fast update mode

Power:
Calibration accuracy: ±0.5dB (at ±30nm from 780, 1310, and 1550nm)

Flatness: (30nm from any wavelength)
1200 to 1600nm l ±0.2dB
700 to 1650nm l ±0.5dB

Linearity: ±0.3dB

Polarization dependence:
1200 to 1600nm ±0.5dB
700 to 1650nm l ±1.0dB

Display resolution: 0.01dB