Photonic Analysis & Sensing

As photonics continues to emerge with new and unique applications such as medical, security and materials analysis, the demand for quality and innovation is greater today than ever for precise, reliable measuring tools and sensitive equipment to support these emerging technologies. Yokogawa offers a variety of instruments and solutions with world class performance such as the AQ 6375B, AQ 6370D, and AQ 2200 to support such unique events as environmental sensing. Our optical Spectrum Analyzer has long wavelength measurement capabilities, high accuracy and resolution, built-in calibration, and is suitable for remote operations. Whether your application has you searching for viruses in cells or verifying the structural integrity of cells, Yokogawa's measuring units have the strength and power your new technologies demand. Yokogawa continues to innovate and develop new equipment to meet rigorous testing requirements for this exciting innovation.

Application Note

Simplified EDFA testing


The request for lower uncertainties in power measurements are increasing,especially in the transformer industries. Their role is to ensure that the electricity is distributed in an efficient and reliable way. 


Laval University is a research institution world renowned for optics and photonics technology research and training, and are the founders of The Center for Optics, Photonics, and Lasers (COPL).

The university's researchers needed a faster and more efficient and practical solution to measure the spectral performance of lasers and optics beyond traditional telecom wavelengths. To achieve this, they contacted Yokogawa Test&Measurement and collaborated to develop a breakthrough grating-based optical spectrum analyzer that could cover MWIR wavelengths up to 5.5 um. Click to learn how productivity in the research lab dramatically increased for precise characterization of laser sources, and active/passive optical components in the fields of communications, medical diagnosis, advanced optical sensing, and environmental and atmospheric sensing.


In this poster session research from The European Conference on Lasers and Electro-Optics 2017, researchers from Texas A&M University, Texas A&M University at Qatar, and Florida A&M University use a Yokogawa Test&Measurement AQ6376 Optical Spectrum Analyzer to detect methane in the air.


The extreme test requirements of our research called for an OSA with extended MIR spectrum bandwidth capabilities up to 5μm, but we couldn’t find one on the market capable of measuring optical inputs at these wavelengths. Yokogawa Test&Measurement rose to the challenge and developed a new OSA model for us that would. Not only do we now have an instrument that is practically custom-made for our needs, it provides repeatable, accurate, and trusted measurement outputs and is easy to learn and use. Their equipment and ability to create a new optical measurement solution has definitely increased the overall efficiency and productivity of our research team.

— Martin Bernier, PhD, P.Eng., Full Professor, Centre de Optique, Photonique, et Laser, Université Laval

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.



    For those not able to couple light into a fiber, the use of a free space light measurement jig provides a means of measuring the properties of free space light (like wavelength, power, peaks, SMSR, noise, etc.) via an optical spectrum analyzer (OSA), something not typically viable. This video demonstrates the setup and use of an example jig to measure the output of a smartphone's LiDAR light.



    A vision of self-driving cars propels the research and development of automotive LiDAR, a vital hardware providing distance and velocity information of a vehicle’s surroundings. Some LiDAR concepts are already heading toward production for automotive ADAS and industrial markets. Two newer concepts promise the greatest potential yet: frequency-modulated continuous wave (FMCW) LiDAR and time-of-flight (TOF) flash LiDAR. However, there are engineering challenges impeding their full adoption. This webinar reviews operation principles and challenges of different LiDAR concepts, a brief discussion on the LiDAR market, and a review of critical optical components such as photodetectors and sources.

    Key takeaways include:

    • Fundamental test solution principles for challenges in demanding environments
    • Ensuring flawless and reliable operation of potentially life-critical components and systems over the entire life of the equipment
    • Techniques and results of signals from both LiDAR and facial recognition lasers from different smartphones
    • Experience how LiDAR manages (or mismanages) navigating metropolitan city streets in a truly driverless Level 4 Robotaxi

    Increasing demands for greater network bandwidth and expansion of 5G wireless backhaul has driven data rates to 400G, 800G, and beyond. Starting with the physical layer of the optical network stack, precision measurement of these light speed signals is crucial.

    This webinar covers a range of alternatives used to evaluate test parameters for DWDM, OSNR, SMSR, and EDFA, and includes a discussion on interesting applications like the use of high-energy lasers across space satellite mesh networks.

    Key topics include:

    • Key test methods and technologies
    • Traditional and new applications
    • Common testing oversights
    • Measuring against industry standards
    • Ensuring network element performance and reliability

Looking for more information on our people, technology and solutions?

Contact Us