The AQ6370D is the latest iteration of the most popular Telecom class OSA from Yokogawa. It offers a versatile wavelength range of 600 nm to 1700 nm ideally suited for both Telecommunications and general purpose applications. The unique free space input design allows testing of both DWDM class singlemode and VCSEL sourced multi-mode fibers in one single model.
Newly added functions include data logging, gate sampling,resolution calibration, an advanced marker function and an enhanced auto-sweep mode.
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
|Wavelength Range||Standard (-12)||High Performance (-22)|
|1520 to 1580 nm
1580 to 1620 nm
1450 to 1520 nm
With the reduced stray-light in the monochromator, AQ6370D achieves ultra-high dynamic range of typ. 78dB.
|Standard (-12)||High Performance (-22)|
|Peak± 1.0 nm
Peak± 0.4 nm
Peak± 0.2 nm
|73 dB (Typ.78dB)
64 dB (Typ.70dB)
50 dB (Typ.55dB)
|*Resolution setting 0.05 nm|
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 (-12)||High Performance (-22)|
|Peak± 0.2 nm
Peak± 0.1 nm
|58 dB (Typ.60dB)
45 dB (Typ.50dB)
|*Resolution setting 0.02 nm|
|Standard (AQ6370D-12)||High Performance (AQ6370D-22)|
|73dB||76dB (Typ. 80dB)|
|*Resolution setting 0.1nm|
Example of the stray-light suppression ratio
High dynamic mode: ON, Resolution setting 0.1 nm, High performance model
The AQ6370D 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.
Fast Sweep: 0.2sec./100nm
With an advanced monochromator, faster electrical circuits, and noise reduction techniques, the AQ6370D 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)
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.
Mouse & Keyboard Operation
The Data Logging function records analysis results such as WDM analysis (OSNR, optical signal/noise ratio), distributed feedback laser diode (DFB-LD) analysis, and multi-peak measurements at up to 10,000 points per channel with time stamps. Recorded data can be displayed in table and graphical forms. This function is useful for the long-term stability testing and temperature cycle testing of systems and devices. The optical spectrum of each measurement can also be stored for reviewing and troubleshooting.
Example of the data logging display
The Advanced Marker function adds markers to obtain the power density and the integrated power of a designated spectrum. This new feature makes it easy to get an OSNR value of the signal, whether modulated or not, directly from its spectrum.
Example of the advanced marker
The Gate Sampling function facilitates the recirculating loop testing of optical transmission systems. Using an external gate signal, the AQ6370D obtains the optical spectrum of the signal which is passing through a certain loop. The advantage of this approach is its speed compared with the conventional External Trigger or Sweep Enable function.
The Resolution Calibration function is used to calibrate the noise equivalent bandwidth with an external light source. With this new feature, the measurements of power density of a broad spectrum light source will be more accurate
7 Indvidual Traces
15 Specific Data Analysis Functions
for popular applications, such as:
Fast Remote Interfaces
Ambient condition change, vibration and shock to an optical precision product, like an optical spectrum analyzer, will effect the optical components, and eventually degrade optical performance. Using standard functions, AQ6370D can maintain its high optical performance within a couple of minutes so that you can quickly start a measurement.
Built-in wavelength reference source
Wavelength calibration function
Optical alignment function
AQ6370D'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.
The free space beam from device level optical sources for LiDAR, 3D sensing, Wafer Chips, optical transceiver TOSAs and laser diodes (LD) in general may be conveniently coupled to a fiber input using various beam capture solutions to optimize the spectral detection performance of the OSA.
For performing long term testing of extreme temperature effects for automotive LiDAR devices as an example, learn how the Data Logging Function can be utilized to eliminate time consuming program development and validation.
AQ6370D's wide close-in dynamic range allows accurate OSNR measurement of DWDM transmission systems (up to 50 GHz spacing). The built-in WDM analysis function analyzes the measured waveform and shows peak wavelength, peak level and OSNR of WDM signals up to 1024 channels simultaneously.
The ASE interpolation method is used to measure gain, NF, and key parameters for optical fiber amplifier evaluation. With WDM-NF analysis function, up to 1024 channels of multiplexed signals can simultaneously be tested. An ASE level for NF measurements is calculated by using a curve-fit function for each WDM channel.
|Reduced energy, emission of CO2, NOx and SOx about 17% compared to the previous model.
Results of Life Cycle Assessment
The 735383-A001 and A002 are unique adapters that reduces the numerical aperture (NA) of a connected fiber to half and is only applicable to the free space optical input structure on the Yokogawa AQ6370 series optical spectrum analyzers
RACK MOUNTING KIT For an EIA-compliant Single-housing Rack
Redefining Optical Spectrum Measurement Excellence
To accurately measure pulsed light using an optical spectrum analyzer (OSA), it is necessary to understand the characteristics of the OSA and select the appropriate measurement method and settings.
This is the speed at which the OSA completes a wavelength sweep (typically specified for measurement over a 100nm span). The sweep speed is especially important when performing many repetitive measurements.
This is the instrument's standard sweep speed. To meet the instrument's specifications, set the sweep speed to this value. With the sweep speed set to this value, the instrument can measure light sources ranging from line spectrum (such as the DFB-LD) to broadband wavelength (such as LEDs) light sources.
Select this value to set the sweep speed to approximately twice the speed of the 1x value. Select this value when you are measuring light sources that have comparatively gentle spectrum shape level changes, such as LED light sources.
Measurements using this value have the following characteristics:
• If you select this value when “UNCAL” is displayed, for waveforms that have sharp spectrum shape changes, such as those produced by the DFB-LD, the level and wavelength measurement accuracies may be lower than those when you select 1x. First check the measurement spectrum, and then select this value if appropriate.
• The noise level is approximately 2 dB higher than that when you select 1x.
This comprehensive training module covers the following topics:
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