Yokogawa AQ637/3/4/5/6/7 Analyzer

AQ6380 Core Product Introduction
One-Sentence Positioning
The AQ6380 is the world's widest wavelength coverage and highest-performance benchtop optical spectrum analyzer introduced by Yokogawa Electric, designed to meet the most cutting-edge optical research and development needs.

Key Features and Breakthroughs
Unparalleled Wavelength Range: 350 ~ 5500 nm

This covers from ultraviolet, visible, near-infrared, mid-infrared, all the way to the edge of far-infrared.

It combines the visible light capability of the AQ6374 and the ultra-wide mid-infrared capability of the AQ6377 into one, achieving "one instrument for all." You can measure a visible LED, a communication-band DFB laser, and a mid-infrared quantum cascade laser with the same device.

Extremely High Wavelength Accuracy

Like other models in the series, it features a built-in helium-neon (He-Ne) gas absorption cell as an absolute wavelength reference.

Across the entire vast measurement range, it provides an extremely high wavelength accuracy of ±0.5 nm (typically ±0.005 nm at 1550 nm). Maintaining this accuracy over such a wide range is a very challenging technical achievement.

Excellent Dynamic Range and Sensitivity

Utilizing a high-precision monochromator structure and optimized detectors, it achieves a dynamic range of up to 78 dB and a sensitivity of -90 dBm.

This means it can measure both strong laser signals and detect extremely weak amplified spontaneous emission (ASE) noise, which is crucial for accurately measuring optical signal-to-noise ratio (OSNR) and laser side-mode suppression ratio (SMSR).

Flexible Resolution

Users can select resolution between 0.05 nm and 10 nm based on measurement needs. High resolution is used to distinguish very closely spaced wavelengths, while low resolution is used for rapid scanning of broadband light sources.

Powerful Software Analysis Capabilities

Inherits Yokogawa OSA's full suite of professional analysis software:

DWDM Analysis: Automatically analyzes multiple channels in dense wavelength division multiplexing systems.

Laser Analysis: Automatically calculates center wavelength, peak power, SMSR, spectral width, etc., for DFB lasers.

SNR/ASE Analysis: Precisely evaluates optical signal-to-noise ratio.

Passive Device Analysis: Measures transmission, insertion loss, isolation, etc., for devices like filters and WDMs.
Typical Application Scenarios
Due to its ultra-wide wavelength range, the AQ6380 is primarily used in top-tier scientific research and highly specialized industrial fields:

Ultra-Broadband Light Source Research:

Such as measuring supercontinuum light sources, whose spectra may extend from visible to mid-infrared.

Broadband light sources for white-light interferometers (OCT).

Cutting-Edge Mid-Infrared Photonics Research:

Precise spectral characterization of quantum cascade lasers (QCL) and interband cascade lasers (ICL).

Testing of mid-infrared fibers (e.g., fluoride, sulfide fibers) and optical devices.

Advanced Sensing Technologies:

Gas Sensing: Many gas molecules (e.g., CH₄, CO₂, CO, N₂O) have strong characteristic absorption peaks in the mid-infrared, used for environmental monitoring, industrial process control, and medical diagnostics.

Chemical Composition Analysis.

Defense and Security:

Testing and calibration of electro-optical systems such as infrared countermeasures, thermal imaging systems, and laser guidance.

Materials Science:

Measuring transmission, reflection, and luminescence properties of novel optical materials (e.g., photonic crystals, metamaterials, two-dimensional materials).
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