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10 new products for your T&M needs

04 Nov 2015  | Martin Rowe and Susan Nordyk

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AQ6375B optical spectrum analyser, Yokogawa

Based on the AQ6375, the Yokogawa AQ6375B optical spectrum analyser adds new features, such as gas purging, a cut-off filter, data logging, and a double-speed mode. The instrument operates in the short-wavelength infrared region, from 1200nm to 2400nm, achieving accuracy of ±0.05nm from 1520nm to 1580nm and ±0.50nm over its full range.

In addition, the AQ6375B provides a wavelength resolution of 0.05nm, a wide close-in dynamic range of 55dB, and a measurement level range of 20dBm to -70dBm. The use of a monochromator design helps separate spectral signals in close proximity to one another and improves dynamic range by reducing the influence of stray light.

The AQ6375B also provides a measurement speed of up to 0.5 seconds per 100nm. This double-speed mode makes it possible to measure an optical signal in half the time it takes using the conventional mode, with only a 2dB penalty over the standard sensitivity value.

The analyser's purging feature minimises the influence of water-vapour absorption on spectral measurements carried out in the SWIR range. By continuously supplying a pure purge gas, such as nitrogen, to the monochromator through the dedicated connectors on the back pane, absorption effects are significantly reduced.

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