Advantest Q8326

The Q8326 is a optical wavelength meter capable of high-accuracy and high-resolution measurement at the central wavelength of the light from laser diodes (LD) for DWDM. – The Michelson interference method allows high resolution measurements of up to 0.001 nm/100 MHz. – The measurement range covers short wavelengths of 480 to 1000 nm and long wavelengths of 1000 to 1650 nm and is selectable via a single switch operation. – Use of a He-Ne laser for the reference wavelength enables high accuracy measurements of up to 2 ppm. In addition, since the He-Ne laser oscillates with high stability, a 2 ppm measurement accuracy is guaranteed over a long time period without recali-bration. – It can measure wavelengths at a sampling speed of five per second so that wavelength fluctuations caused by tem-perature variations can be captured precisely.