An optical spectrum analyzer (OSA) measures and displays the power distribution of an optical source over a specific wavelength range. An OSA trace displays power in the vertical scale and the wavelength in the horizontal scale.
Advanced optical spectral analysis enables precise performance characterization across diverse sectors, including telecommunications, consumer electronics, healthcare, life sciences, security, sensing, microscopy, gas/chemical analysis, and environmental monitoring.
For over 40 years, Yokogawa (formerly Ando) has driven continuous advancements in monochrometer design, measurement performance, reliability, and flexible OSA technology.
- 0.005 nm (5 pm / 0.624 GHz) resolution
- ±5 pm accuracy
- 67 dB dynamic range
- -85 dBm level sensitivity
- O, C, and L-bands
- 0.02 nm resolution
- ±8 pm accuracy
- 67 dB dynamic range
- -90 dBm level sensitivity
- singlemode and multi-mode
- 0.1 nm resolution
- ±20 pm accuracy
- 55 dB dynamic range
- -80 dBm level sensitivity
- High sweep speed for manufacturing
- 0.03 nm resolution
- ±20 pm accuracy
- 55 dB dynamic range
- -80 dBm level sensitivity
- Highest sweep speed for manufacturing
- 0.02 nm resolution
- ±50 pm accuracy
- 60 dB dynamic range
- -80 dBm level sensitivity
- singlemode and multi-mode
- industrial & biomedical laser testing
- 0.05 nm resolution
- ±50 pm accuracy
- 60 dB dynamic range
- -80 dBm level sensitivity
- singlemode and multi-mode
- visible to communications wavelengths
- 0.05 nm resolution
- ±50 pm accuracy
- 55 dB dynamic range
- -70 dBm level sensitivity
- singlemode and multi-mode
- NIR and SWIR wavelengths
- 0.1 nm resolution
- ±0.5 nm accuracy
- 55 dB dynamic range
- -65 dBm level sensitivity
- singlemode and multi-mode
- SWIR and MWIR wavelengths
- 0.1 nm resolution
- ±0.5 nm accuracy
- 50 dB dynamic range
- -60 dBm level sensitivity
- singlemode and multi-mode
- MWIR wavelengths
- 0.1 nm resolution
- ±0.5 nm accuracy
- 50 dB close-in dynamic range
- 73 dB measurement dynamic range
- -60 dBm level sensitivity
- singlemode and multi-mode
- MWIR wavelengths
The AQ6370 Viewer is a package of PC application software for the AQ6380, the AQ6360, and the AQ6370 series Optical Spectrum Analyzer.
Specifications and features
| aaaaav | ||
| Wavelength band / Feature / Model | ||
| VIS | High resolution |
AQ6373E |
| VIS Optical comm. |
Wide band | AQ6374E |
| Optical comm. | Top performance |
AQ6380 |
| Highest performance |
AQ6370E | |
| High-speed Space-saving |
AQ6361 | |
| Cost-effective | AQ6360 | |
| SWIR | 2 μm | AQ6375E |
| MWIR | 3 μm | AQ6376E |
| 5 μm | AQ6377E | |
| aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | Wavelength resolution（nm） |
Wavelength accuracy（nm） | Close-in dynamic range（dB） | Level sensitivity（dBm） | Applicable fiber |
Purge feature | Higher-order diffracted light suppression |
|||||||||||||||
| Wavelength range（nm） | Max. | Min. | VIS 0.6μm |
Optical comm. | Full range |
Resolution minimum |
Resolution 0.02 nm |
Resolution 0.1 nm |
VIS ≤ 1 μm |
Optical comm. 1.3-1.6μm |
SWIR ≤ 2.2 μm |
SWIR/MWIR ≥ 2.2 μm |
SM | GI | Large core |
|||||||
| 1.31μm | 1.55μm | 1.6μm | ||||||||||||||||||||
 |
10 | 0.01*1 （350 to 600 nm） 0.02 |
±0.05 aaaaaa |
aaaaaaa | aaaaaaa | aaaaaaa | ±0.2 aaaaaa |
60 （±0.5 nm） |
60 （±0.5 nm） |
−80 typ. （500-1000 nm） −60 typ. （400-500 nm） |
aaaaaaaaa | aaaaaaaaaaaaa | aaaaaaaaaaaaa | ● | ● | ● | aaaaaa | ● | ||||
 |
10 | 0.05 | ±0.05 | ±0.2 | ±0.05 | ±0.2 | ±0.2 | 60 （±1.0 nm） |
−70 （400-900 nm） |
−80 | ● | ● | ● | ● | ● | |||||||
 |
2 | 0.005 | ±0.05 | ±0.005 | ±0.01 | ±0.05 | 45 （±0.05 nm） |
60 （±0.1 nm） |
55 （±0.1 nm） |
65 （±0.2 nm） |
55 typ. （±0.2 nm） |
67 typ. （±0.4 nm） |
aaaaaaaaaaaaaa | −85 | ● | ● | ● | |||||
 |
2 | 0.02 | ±0.1 | ±0.008 typ. | ±0.015 typ. | ±0.1 | 45 （±0.1 nm） |
58 （±0.2 nm） |
45 （±0.1 nm） |
58 （±0.2 nm） |
50 typ. （±0.2 nm） |
67 typ. （±0.4 nm） |
−60 （600-1000 nm） |
−90 | ● | ● | ● | aaaaaa | ||||
 |
2 | 0.03 | ±0.1 | ±0.02 | ±0.02 | ±0.1 | 37 （±0.1 nm） |
50 （±0.2 nm） |
40 （±0.2 nm） |
55 （±0.4 nm） |
−80 | ● | ● | ● | ||||||||
|
2 | 0.1 | ±0.1 | ±0.02 | ±0.04 | ±0.1 | 40 （±0.2 nm） |
55 （±0.4 nm） |
40 （±0.2 nm） |
55 （±0.4 nm） |
−80 | ● | ● | |||||||||
 |
2 | 0.05 | ±0.5 | ±0.05 | ±0.1 | ±0.5 | 45 （±0.4 nm） |
55 （±0.8 nm） |
−62 | −67 （1.5-1.8μm） −70 （1.8-2.2μm） |
−67 （2.2-2.4μm） |
● | ● | ● | ● | ● | ||||||
 |
2 | 0.1 | ±0.5 | ±0.5 | ±0.5 | 45 （±1.0 nm） |
55 （±2.0 nm） |
−65 （1.5-2.2μm） |
−55 （2.2-3.2μm） |
● | ● | ● | ● | ● | ||||||||
 |
5 | 0.2 | ±0.5 | 50 typ. （±5.0 nm） |
−40 typ. （1.9-2.2μm） |
−50 typ. （2.2-2.9μm） −60 typ. （2.9-4.5μm） |
● | ● | ● | ● | ● | |||||||||||
●: Available
Note: The AQ6370E and AQ6361 are high-performance models.
*1: High resolution model
*2: Wavelength extended
This application note introduces free space light measurement jigs for measuring the emission spectrum of a light source that propagates in free space or the optical transmission spectrum of an optical filter. It describes four types of jigs for light sources and one type for filters.
Optical transceivers are one of the indispensable key devices for optical communications that interconvert optical and electrical signals.
Optimizing bias voltage is essential for efficient optical modulator operation, maintenance of signal quality, and meeting performance specifications required for a designated application. Proper biasing helps achieve desired modulation effects, reduces distortion, and enhances overall reliability of optical communication systems.
Overview of optical communications via optical fibers including: signal conversion, optical fiber benefits, techniques like wavelength division multiplexing (WDM) for increased capacity, key components like optical amplifiers and spectrum analyzers for maintaining transmission quality.
OSA Macro Program Function
The OSA Macro Program Function enables automated measurement by creating programs for entry of measurement conditions and other tasks. Users can program a sequence of measurement procedures from entry of measurement conditions (e.g., wavelength sweep width, setting resolution) to analyses, data saving, output, and others and eliminates redundant procedures on the production line. The function acts as a controller of other connected devices through the LAN or RS232C port and allows users to build an automatic measuring system without using an external PC and input measurement conditions or output measured results while programs are running.
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.
We have developed the AQ6375 Optical Spectrum Analyzer grating-based desktop optical spectrum analyzer, which can measure an optical spectrum over a wide wavelength range from 1.2 to 2.4 m with high wavelength resolution at high speed. Despite the popularity of desktop optical spectrum analyzers in the telecommunication wavelength region, a large-scale optical spectrum measurement system with a monochromator has commonly been used for measuring the long wavelength region, and so there was a need for a desktop optical spectrum analyzer for long wavelengths. Deep optical absorptions appearing in the long wavelength region around 2 m caused by CO2, NOX and H2O are attracting attention in the environmental and medical fields, and thus sensitive measuring equipment by laser absorption spectroscopy using a near infrared semiconductor laser is becoming more popular. With excellent optical spectrum measurement capabilities (high resolution and high speed), operability and maintenance performance, the AQ6375 Optical Spectrum Analyzer optical spectrum analyzer will contribute to the performance improvement and spread of near-infrared semiconductor lasers used in laser absorption spectroscopy.
This paper describes a compact optical channel monitor and a delayed interferometer having free-space optical elements such as lenses or mirrors, as an application of microoptics. These devices have been developed to be built into dense wavelength division multiplexing (DWDM) transmission systems. These optics use a Gaussian beam which is emitted through single-mode optical fibers and located near the optical axis. This paper explains the optical designs of these devices based on the Gaussian beam's behavior.
SANPEI Yoshihiro*1 SUZUKI Yasuyuki*2 IEMURA Kouki*3 ASANO Junichirou*3
*1Communication and Measurement Business Headquarters, Optical Communication Measurement Development Department
*2Communication and Measurement Business Headquarters, Core Technology Development Department
*3Photonics Business Headquarters, Engineering Department IV
After a disastrous 2009, the large publicly held test companies enjoyed booming business in 2010.
Wavelength accuracy: Wavelength accuracy is a tolerance to the true value of a measured value when the standard wavelength is measured. Wavelength repeatability:Wavelength repeatability is the stability of ...
If you are performing wavelength calibration using the instrument's built-in light source, the warning message is an indication that the monochromator needs to be repaired. Please visit our Contact site to locate ...
Please download the attached application note for instructions on how to make High Bit Rate Modulated OSNR Measurement for the AQ6319 and AQ6370 series Optical Spectrum Analyzer..
The Chopped Light mode is used: To increase measurement level sensitivity by cutting the high frequency noise To detect only the light that the LS emitted, effective for free space measurement. In free space ...
- AQ637X Optical Spectrum Analyzer sanitation procedure
- Restore settings to defaults with parameter initialization
If you have products currently in China that require calibration or repair, you may either return them to your local Yokogawa service center or the Yokogawa China Service & Repair Center. Please be advised that ...
The AQ6373 optical spectrum analyzer performs the color analysis function as follows:1. Measure the spectrum 2. Compare the measured spectrum with “color matching functions” as defined by the CIE Using these ...
Level Accuracy:Level Accuracy is a tolerance to the true value of measured value, when a standard level is measured with a standard wavelength. Level Linearity:Level Linearity is the width of error dispersion ...
The remote viewer may not start if the screen resolution is too low. Adjust the screen resolution to 1024 by 768 pixels (or larger) then restart the software.
Yes, the AQ6370 Optical Spectrum Analyzer Viewer Software is compatible with Windows 7 32-bit and 64-bit. Note: Please make sure the correct USB driver is installed for either Windows 7 32-bit or 64-bit.
If the AQ637X series Optical Spectrum Analyzer is already running and you attempt to connect an external display, the OSA will not automatically detect the external display. The OSA will need to be re-booted before it can recognize and ...
Please clean the fiber used between the calibration output and the optical input.
The AQ6370 OSA cannot load and re-display the data saved by an AQ6370B. However, the AQ6370 Viewer software can display the data saved by both instruments. Also please note that the AQ6370B OSA can load and re-display ...
- AQ6319 Optical Spectrum Analyzer
- Warning "142 WL calibration failed"
- Displayed when light source level is not enough at wavelength calibration or calibration cannot be executed because wavelength difference is out of calibration
The maximum input power that the AQ6370B Optical Spectrum Analyzer can measure for pulsed light measurements is +20dBm per resolution at full span, per channel. Keep in mind that this limit is applicable to an averaged power of pulsed light, ...
The resolution is controlled by 3 factors: Input Slit Detraction Grating Output Slit The resolution setting controls the output slit disk. This disk has a fixed number of slits in it. Since the setting only control ...
- It is possible to convert an AQ6370 Optical Spectrum Analyzer Binary file to ASCII .CSV file using the AQ6370 Viewer Software?
- Different AQ637X series OSA Viewer software will load specific binary file extensions.
For the AQ6373 Optical Spectrum Analyzer you can use a maximum 800 micron core fiber that must be terminated in a standard FC connector. For the AQ6375 and AQ6370 series OSA you can use a maximum 200 micron core fiber which, ...
The AQ637X Optical Spectrum Analyzer has a feature called Auto Offset that it performs every 10 minutes. What this feature does is zero out the OP amps in the OSA to ensure constant level accuracy. This feature will however, stop the OSA ...
No, unfortunately due to the number of current fiber combinations, we do not stock optical fibers. There are many companies that specialize in optical fiber cords.
The AQ6370C Optical Spectrum Analyzer was developed in accordance with the IEC standard: WG4 (IEC 61280-1-3) Test procedures for general communication subsystems -Central wavelength and spectral width measurement. We cannot guarantee the RMS ...
Brochures
- All Products Guide (27.5 MB)
Product Overviews
Introducing the new Yokogawa Test&Measurement AQ6380 Optical Spectrum Analyzer. This new OSA includes many sought-after features including:
• An unprecedented 5 pm wavelength resolution
• ±5 pm wavelength accuracy
• 1200 nm to 1650 nm wavelength range
• 65 dB wide close-in dynamic range
• 80 dB stray light suppression
• Automated wavelength calibration
• Gas purging
• DUT-oriented interface and test apps
• Backward-compatible remote interface
• 10.4in intuitive touchscreen
• Up to 20x faster measurement
• Remote operation capabilities
From visible light to telecommunication bands and even up to applications in the 2000nm region, optical testing professionals count on the Yokogawa Test&Measurement optical testing family of products. For decades, these precision-based optical measuring instruments have met and exceeded the needs of many customers’ experimental requirements. Applicable to a range of uses in R&D, manufacturing, and academia, Yokogawa Test&Measurement OSAs, OTDRs, OWMs, modular manufacturing test systems, and more deliver quality, consistency, ease of use, and market leadership for all manner of optical test applications.
How-tos
This video demonstrates side mode suppression ratio (SMSR) analysis using an AQ6370E OSA and explains how to adjust the signal span to capture side modes and execute SMSR analysis to detect and locate the closest peaks from a 1310 nanometer laser via a connected light source module. SMSR analysis allows engineers to quickly identify and quantify the differences between the main peak and any side peaks in terms of nanometers and power which helps ensure the quality and accuracy of a laser's output. Manufacturers want to see a single, clean peak in a laser's output without side modes or additional peaks, to indicate a laser is performing as expected.
Webinars
In this webinar, Michael Kwok will discuss general techniques to measure OSNR for both traditional and modulated optical signals. The goal of the webcast is to provide test engineers with key measurement considerations for performing OSNR measurements using an Optical Spectrum Analyzer or OSA.
- High resolution and wide measurement range support the development of lasers for measuring greenhouse gases and blood glucose concentrations -
- Industry-leading performance in dispersive spectroscopy achieves 5 pm wavelength resolution -
High Performance LONG WAVELENGTH The AQ6375 is the first bench-top optical spectrum analyzer covering the long wavelength over 2 μm.It is designed for researchers and engineers who have been struggling with inadequate test equipment to measure in ...