YOKOGAWA AQ6370D High-Performance Optical Spectrum Analyzer
| Brand | YOKOGAWA |
|---|---|
| Origin | Japan |
| Model | AQ6370D |
| Wavelength Range | 600–1700 nm |
| Resolution Bandwidth | 0.02–10 nm (adjustable) |
| Wavelength Accuracy | ±0.01 nm (with internal reference source) |
| Dynamic Range | ≥78 dB (typ., 1 nm RBW, 100 nm offset) |
| Sensitivity | –90 dBm (10 pm RBW, 10 ms sweep) |
| Interface | GPIB, LAN, USB |
| Compliance | IEC 61326-1 (EMC), IEC 61010-1 (Safety) |
Overview
The YOKOGAWA AQ6370D High-Performance Optical Spectrum Analyzer is an engineered solution for precision spectral characterization of optical components and communication systems operating across the visible to near-infrared spectrum (600–1700 nm). Based on diffraction grating monochromator architecture with dual-pass Czerny-Turner optics and thermoelectrically cooled InGaAs detector array, the AQ6370D delivers high wavelength accuracy (±0.01 nm with built-in reference light source), fine resolution bandwidth (down to 0.02 nm), and exceptional dynamic range (>78 dB at 1 nm RBW). Designed as the successor to the widely adopted ANDO AQ6317 series, it maintains backward compatibility with legacy test scripts and calibration workflows while introducing enhanced signal processing algorithms, faster sweep speeds, and improved thermal stability—enabling repeatable, traceable measurements under laboratory and production-line conditions.
Key Features
- High-fidelity optical design incorporating a dual-pass Czerny-Turner monochromator with optimized grating blaze and stray-light suppression optics
- Integrated wavelength calibration source (tungsten-halogen or He-Ne, depending on configuration) enabling automated, in-situ recalibration without external equipment
- Real-time sweep acceleration via hardware-accelerated digital signal processing (DSP), reducing typical full-span acquisition time by up to 40% versus predecessor models
- Intuitive graphical user interface with multi-touch support, customizable measurement templates, and context-sensitive help accessible directly from instrument panel
- Onboard data analysis suite including peak search, mask testing, slope calculation, SNR estimation, and pass/fail evaluation against user-defined limits
- Rugged mechanical construction with temperature-compensated optical bench and shock-absorbing chassis, rated for continuous operation in Class I laboratory environments
Sample Compatibility & Compliance
The AQ6370D supports standard single-mode (SMF-28), multimode (OM1–OM5), and polarization-maintaining fiber inputs via FC/PC, FC/APC, SC/PC, and SC/APC adapters (optional). It accommodates both free-space and fiber-coupled sources—including DFB lasers, FP lasers, SLEDs, ASE sources, and modulated transmitters—without requiring external attenuators for input power levels up to +20 dBm. The analyzer complies with IEC 61010-1 for electrical safety and IEC 61326-1 for electromagnetic compatibility in industrial and laboratory settings. Its firmware architecture supports audit-trail logging and user-access control levels aligned with GLP/GMP documentation requirements, and optional software modules enable compliance with Telcordia GR-1073-CORE and ITU-T G.694.1 channel plan validation protocols.
Software & Data Management
YOKOGAWA’s OSA Application Software (v3.x and later) provides remote control via SCPI commands over GPIB, TCP/IP (VXI-11 or raw socket), and USBTMC interfaces. The software supports script-based automation (VBScript, Python, LabVIEW), batch file import/export in CSV, XML, and SDF formats, and direct integration with MATLAB and Python via native API bindings. All measurement data include embedded metadata—timestamp, instrument ID, calibration status, RBW setting, and sweep parameters—ensuring full traceability. Optional 21 CFR Part 11-compliant software package adds electronic signature capability, role-based access control, and immutable audit logs for regulated environments.
Applications
- Characterization of DWDM transmitter channels, including center wavelength, optical signal-to-noise ratio (OSNR), side-mode suppression ratio (SMSR), and spectral width (FWHM)
- Testing of optical amplifiers (EDFA, Raman) for gain flatness, noise figure, and ASE spectral profile
- Verification of filter responses (thin-film, AWG, FBG) against ITU channel masks and insertion loss uniformity specifications
- Research-grade spectral analysis in photonics laboratories, including nonlinear frequency conversion, supercontinuum generation, and quantum dot emission profiling
- Production line pass/fail screening of passive components (isolators, circulators, couplers) using programmable limit testing and statistical process control (SPC) output
FAQ
What wavelength calibration standards does the AQ6370D support?
It includes a factory-aligned internal reference source (typically a stabilized He-Ne laser at 632.8 nm or broadband tungsten-halogen lamp) compliant with ISO/IEC 17025 traceability requirements.
Can the AQ6370D measure OSNR below 25 dB?
Yes—using its high-dynamic-range mode and optimized noise floor compensation algorithm, it achieves reliable OSNR measurement down to 15 dB for 50-GHz spaced DWDM signals.
Is remote programming supported via Python or MATLAB?
Yes—native Python bindings and MATLAB Instrument Control Toolbox drivers are provided with the OSA Application Software package.
Does the instrument meet FDA 21 CFR Part 11 requirements out-of-the-box?
No—the base firmware does not include electronic signatures or audit trails; these capabilities require installation of the optional 21 CFR Part 11 Compliance Kit and associated license.
What is the typical warm-up time to achieve specified wavelength accuracy?
Less than 30 minutes after power-on, assuming ambient temperature variation ≤±2 °C/hour and stable line voltage within ±5% tolerance.
