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Optical Power Meter Heads

Optical power heads and connecting interface modules providing accurate measurements over a variety of wavelength ranges

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Highlights

Specifications

Models

Resources

Highlights

Large-area detectors compatible with the N7749C

The 5mm detector area on Keysight's latest optical power heads allows flexible placement of the remote optical power meter, which is then connected to the N7749C. The wide choice of adapters allows input from popular fiber connector types, bare fibers or open beams. The magnetic D-shaped adapters allow rapid removal and replacement without twisting attached fibers.

N7749C interface for two or four optical power heads

Controls the remote heads
Sample averaging times ranging from 100 µs to 10 s for all heads
Readout over LAN and USB interfaces with built-in web-browser GUI
SCPI command set common to Keysight optical power meters

Power values logged with dual-1M sample buffers for each head, to sample continuously with internal or external triggering
Uninterrupted simultaneous measurement and readout minimize overhead time for repetitive measurements
Family-wide, common trigger concept

Analog Output Port Perfect for Automated Alignment

Direct feedback for optimization processes like fiber alignment with analog voltage outputs, at the remote head itself and from the N7749C front panel
Either linear proportional to the optical signal power or logarithmic over decades of power levels

Key Specifications

Sensor Types

Si, Ge or InGaAs with

optional filters or

integrating spheres

Operating Wavelength Ranges

450 to 1020nm,

750 to 1800nm,

800 to 1700nm,

850 to 1650nm

Power Ranges

-90 to 10 dBm,

-80 to 10 dBm,

-70 to 27 dBm,

-60 to 40 dBm

Uncertainty at ref. conditions

± 1.5%, ± 1.7%,

± 2.2%, ± 2.5%,

± 3%

Compatibility

Modules and

optical heads

for 8163B, 8164B,

81618A, 81619A,

N7749C

Find the Model that's Right for You

81620C

Large-Area silicon detector

Starting from

The 81620C Optical Power Head features a large-area silicon detector. It operates in the wavelength range from 450 nm to 1020 nm at low noise, and thus is the best choice for measurements at 850 nm.

81623C

Large-area germanium detector

Starting from

The 81623C Optical Power Head features a large-area germanium detector. It provides the widest wavelength range in the family and operates in the wavelength range from 750 nm to 1800 nm.

81624C

Large-area InGaAs detector

Starting from

The 81624C Optical Power Head features a large-area InGaAs detector. It provides the highest accuracy and the lowest noise in the family and operates in the wavelength range from 800 nm to 1700 nm.

81626C

Large-area InGaAs detector, protected by filter

Starting from

The 81626C High-Power Optical Head features a filtered large-area InGaAs detector. It operates up to +23 dBm (+27 dBm in 1250 nm to 1650 nm) and covers the wavelength range from 850 nm to 1650 nm.

81628C

Integrating sphere with InGaAs detector

Starting from

The 81628C High-Power Optical Head features an integrated sphere that enables it to handle power levels up to +40 dBm (with heat sink), across 800 nm to 1700 nm wavelength range. It provides the highest accuracy at high power within the family.

N7749C

Interface to 8162-C series optical power heads

Starting from

The N7749C optical head interface can control two or four 8162-C series optical power meter heads. Readout is supported over LAN and USB interfaces with a built-in web-browser GUI and the SCPI command set common to Keysight optical power meters.