Wideband optical spectrum analyser increases measurement speeds

Announcing the successor to the AQ6315A wideband optical spectrum analyser, Yokogawa says that the AQ6374 features diffraction grating based, monochromator technology delivering high-precision measurement performance and accuracy.

It has an enhanced user interface and an air purging feature, to provide a powerful benchtop tool for general-purpose optical spectrum measurements over the 350 to 1750nm wavelength range.

As well as new features, such as the air purging system, it achieves superior operability and measurement times up to 40 times faster than its predecessor, says the company.

The ability to sample 100001 points of data (100 times as much as the AQ6315A) enables measurement over a broad wavelength range with high resolution, while data-transfer rates during remote control via Ethernet are up to 100 times faster than for the AQ6315A.

The measurement performance achieved by the monochromator technology include a wavelength resolution setting from 0.05 to 10 nm, a wavelength accuracy of ±0.05 nm (at 633 and 1523 nm) or ±0.2 nm (from 350 to 1700 nm), a level accuracy of ±1.0 dB, level sensitivity of -80 dBm (from 900 to 1600 nm), a measurable power range from -80 to +20 dBm, a close‐in dynamic range of 60 dB (peak ± 1.0 nm, resolution 0.05 nm), and a sweep time less than 0.5 sec.

Internal data storage of 512Mbyte is included, and external data storage is supported via a USB interface. Ethernet RJ-45 and GP‐IB interfaces are also incorporated. A built‐in calibration source is provided for a full-automatic optical alignment and wavelength calibration, which takes just a few minutes.

The purging feature is designed to minimise the influence of water-vapour absorption on spectral measurements by continuously supplying a pure purge gas, such as nitrogen, to the monochromator through dedicated connectors on the back panel.

The ergonomically-designed GUI incorporates a full text menu, aggregation of measurement conditions, display of a hard key menu the same as the panel layout, and a trace setting menu.

Applications include testing light sources, optical filters and sensors operating in the visible range as well as in the telecomms range of the spectrum.


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