For the measurement of light sources and signals in the wavelength range from 700 nm to 1700 nm, the new 86120D model offers a compelling set of features with ±1.5 ppm accuracy and a measurement cycle time of 0.6 seconds. Like for the 86122C, all wavelength accuracy specifications apply to single-scan measurements - there is no averaging required. This makes them ideal for fast, automated wavelength adjustment procedures.
The 86120D has been qualified for “General Purpose” environmental operating conditions from 0 °C to +55 °C, including shock and vibration levels for use cases that require robust test equipment.
Keysight multi-wavelength meters are Michelson interferometer- based instruments that measure wavelength and optical power of laser light over a specified wavelength range. Simultaneous measurements of multiple laser lines are performed, allowing measurements of DWDM signals and multiple lines of Fabry-Perot lasers. Each laser line is assumed to have a linewidth (including modulation sidebands) of less than:
– 10 GHz for the 86120D, and – 2.5 GHz for the 86122C
A broadband mode is also available for measuring the weighted center of wider lines. This technical specifications sheet describes the measurement accuracy and operating conditions of the Keysight 86120D and 86122C Multi-Wavelength Meters. The specifications apply to all functions within the specified environmental conditions. All specifications apply after the instrument’s temperature has been stabilized after 15 minutes continuous operation.
Specifications:
86120D | |
Wavelength | |
Range | 700 to 1650 nm (182 to 428 THz) |
Operating Range | 700 to 1700 nm (176 to 428 THz) |
Absolute Accuracy | |
±1.5 ppm | |
typ. ±1ppm (within 15°C to 35°C) | |
At 1550 nm | ±2.3 pm |
At 1330 nm | ±2.1 pm |
Differential accuracy | ±0.4 ppm |
Minimum resolvable separation (equal power lines input) | |
15 GHz | |
At 1550 nm | 0.12 nm |
At 1330 nm | 0.09 nm |
Display Resolution | |
0.0001 nm | |
Units | nm (vacuum or standard air), cm-1, THz |
Power | |
Calibration accuracy | ±0.6dB |
(at ±30nm from 780nm, 1310/1550nm) | |
Flatness | ±0.2dB (1200 to 1600nm) |
±0.5dB (700 to 1650nm) | |
Linearity | ±0.3dB (1200 to 1600nm) |
Polarization Dependence | ±0.6dB (1200 to 1600nm) |
±1.5dB (700 to 1650nm) | |
Display resolution | 0.01dB |
Units | dBm, mW, µW |
Sensitivity | |
Single line input | -20dBm (700 to 1600nm) |
-25dBm (800 to 1200nm) | |
-40dBm (1200 to 1600nm) | |
-30dBm (1600 to 1650nm) | |
Multiples lines input | 30 dB below total input power, but not less than single line input sensitivity |
Selectivity | 25dB spacing ≥100 GHz |
10dB spacing ≥25 GHz |