The OSA‑610B High‑Resolution Optical Spectrum Analyzer uses coherent detection to deliver extremely fine frequency resolution for analyzing 10G, 40G, 100G, and emerging 400G+ optical transmission signals. It precisely measures power and frequency characteristics and reveals details not detectable with traditional field OSAs. As the first field‑deployable solution offering lab‑grade performance, it can fully analyze 400G Nyquist WDM signals and separate narrow guard bands in compressed super‑channels, enabling accurate assessment of next‑generation high‑speed DWDM systems in a compact, portable form factor.

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