Sell Test Equipment

AQ6370C Yokogawa Optical Analyzer

The AQ6370C is an optical analyzer from Yokogawa. An optical spectrum analyzer, also called an optical analyzer, is a precision instrument that measures the power of an optical source. This electronic test equipment is for monitoring power distribution over a specified wavelength span. It displays the measurement in a graph, where power is the vertical scale and wavelength is the horizontal scale.

Additional Features:

  • Wavelength range: 600 to 1700nm
  • High wavelength accuracy: ±0.01nm
  • High wavelength resolution: 0.02nm
  • Wide dynamic range: 78dB typ.
  • Wide level range: +20 to -90dBm
  • Fast measurement: 0.2 sec. (100nm span)
  • Applicable to single-mode and multimode fibers

Standard and High-Performance Models

There are two models available, Standard and High performance. The High-Performance model provides even higher wavelength accuracy and dynamic range. High wavelength resolution: 0.02nm


  • High Wavelength Accuracy: ±0.01nm
  • High performance model: ±0.01nm (C band)
  • Standard model: ±0.02nm (C+L band)

Wavelength Range

Standard (-10)

  • 1520 to 1580 nm: ±0.02 nm 
  • 1580 to 1620 nm: ±0.02 nm
  • 1450 to 1520 nm: ±0.04 nm
  • Full range: ±0.1 nm

High Performance (-20)

  • 1520 to 1580 nm: ±0.01 nm
  • 1580 to 1620 nm: ±0.02 nm
  • 1450 to 1520 nm: ±0.04 nm
  • Full range: ±0.1 nm

Ultra-High Dynamic Range: 78dB typ.

  • With the reduced stray-light in the monochromator, AQ6370C achieves ultra-high dynamic range of typ. 78dB.

Standard (-10)

  • Peak± 1.0 nm: 73 dB
  • Peak± 0.4 nm: 62 dB
  • Peak± 0.2 nm: 45 dB

High Performance (-20)

  • Peak± 1.0 nm: 73 dB (Typ.78dB)
  • Peak± 0.4 nm: 64 dB (Typ.70dB)
  • Peak± 0.2 nm: 50 dB (Typ.55dB)

Sharper Filter Edge

The high-performance model can also achieve a higher dynamic range within 0.2nm of the peak wavelength. With the sharper spectral characteristics of the monochromator, spectral signals in close proximity can be separated clearly and measured accurately.

Standard (-10)

  • Peak± 0.2 nm: 55 dB
  • Peak± 0.1 nm: 37 dB

High Performance (-20)

  • Peak± 0.2 nm: 58 dB (Typ.60dB)
  • Peak± 0.1 nm: 45 dB (Typ.50dB)

Stray-light suppression ratio: 80dB typ. 

This new specification provides stray-light suppression capability when High dynamic mode, usually taking longer measurement time, is not used. The AQ6370C contributes to shortening the measurement time with the high stray light suppression ratio.

  • Standard (AQ6370C-10): 73dB
  • High Performance (AQ6370C-20): 76dB (Typ. 80dB)

Wide Level Range: +20DBm to -90dBm

The AQ6370C can measure high power sources such as optical amplifiers and pump lasers for Raman amplifiers, and very weak optical signals as well. Measurement sensitivity can be chosen from seven categories according to test applications and measurement speed requirements.

  • Improved level sensitivity: -85dBm (1000 to 1300nm)
  • Smoothing Function - Reduce noise on the measured spectrum
  • High dynamic mode - Obtain a better dynamic range by reducing the influence of stray-light, which is caused when the input is a strong optical signal.

Free Space Input

  • Multimode and single mode fiber on the same OSA: AQ6370C's low insertion loss for multimode fiber is also beneficial to maintain the excellent measurement efficiency
  • Small insertion loss variation at the input connector increases measurement repeatability
  • No damage connecting fibers because there is no physical contact
  • APC level correction
  • The APC level correction function corrects the level offset caused by an insertion loss of angled PC connector

Excellent Efficiency

  • Fast Sweep: 0.2sec./100nm

With an advanced monochromator, faster electrical circuits, and noise reduction techniques, the AQ6370C achieves fast measurement speed even when measuring a steep spectrum from DFB-LD or DWDM signals, or when measuring a low power signal from a broadband light source.

  • Fast Remote Interface (Ethernet, GP-IB)

Wide Span Sweep yet High Resolution

The 50,001 data sampling points expands measurement range in a single sweep while keeping a high wavelength resolution. This makes your measurement easier and more efficient than conventional systems.

Easy Operation

Trace Zooming

  • Change display conditions, such as center wavelength and span, by clicking and dragging the mouse
  • Enlarge your area of interest instantly and move it at will

Mouse & Keyboard Operation

  • Front panel operation proven intuitive and easy to use by our many of users
  • Even easier with a mouse
  • The keyboard helps enter labels and file names

Easy Data Handling

  • USB Storage: USB interfaces support large-capacity removable memory and hard disk drives.
  • 512MB Internal Memory for over 20,000 traces
  • All-at-Once Trace Filing: All seven traces can be saved in one file at once.

Various Analysis Functions

7 Individual Traces

  • Simultaneous multi-trace display
  • Calculation between traces (subtraction between traces)
  • Max/Min hold

13 Spectral Analysis Functions for popular applications, such as:

  • Spectral width analysis
  • WDM (OSNR) analysis
  • WDM-NF (EDFA) analysis
  • DFB-LD analysis
  • FP-LD analysis
  • LED analysis
  • SMSR analysis
  • Various filter analysis
  • With the macro programming, multiple analyses can be combined and executed automatically.

Building Automated Test System

Macro Programming

  • Build a simple auto-measurement system without an external controller.
  • Easy to create test program by recording the user's actual key strokes and parameter selections.

Fast Remote Interfaces

  • GP-IB, RS-232, and Ethernet (10/100Base-T) interfaces
  • Improve the testing throughput of test systems by the fast measurement, command processing, and data transfer speed.
  • SCPI compatible commands and AQ6317 Emulation Mode
  • LabVIEW® Driver available

Easy to Keep Accurate

Ambient condition change, vibration and shock to an optical precision product, like an optical spectrum analyzer, will affect the optical components, and eventually degrade optical performance. Using standard functions, AQ6370C can maintain its high optical performance within a couple of minutes so that you can quickly start a measurement.

  • Built-in wavelength reference source: AQ6370C comes equipped with a wavelength reference source for the wavelength calibration and optical alignment.
  • Wavelength calibration function: Automatically calibrates with the built-in wavelength reference or an external light source, to ensure the wavelength accuracy.
  • Optical alignment function: Automatically aligns the optical path in the monochromator using the built-in source to maintain high performance.

AQ6370C's overall high performance can cover not only manufacturing of optical devices and optical transmission systems but also research and development, and a variety of other applications:

  • Optical active devices
  • Laser diode/Fiber laser/Optical amplifier/Optical transceiver
  • Optical passive devices
  • Filter/FBG/AWG/WSS/ROADM/Optical fiber
  • Optical transmission equipment (DWDM, CWDM)
  • Development support of Applied photonics equipment
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