Optical Spectrum Analysis

A fully featured range of Optical Spectrum Analyzers (OSA) for all aspects of optical test in today’s high speed transmission network - 10G, 40G 100G, 200G, 400G (inc. Super Channels)

The VIAVI OSA are ideal for testing high speed networks and ensuring reliable service turn-up while minimizing network down time. Ranging from basic channel checkers and compact OSA for applications such as metro access, metro transport, ethernet, CWDM, DWDM, ROADM and POL-MUX test through to high resolution OSA for lab and production environments. VIAVI innovations such as in-band and in-service OSNR measurements mean there is no need to take services down for maintenance allowing you to deliver on your customer SLA.


The COSA-4055 module offers the functionality and speed of an OSA in a handheld form factor at a fraction of the price of a traditional OSA. It is an ideal test tool for metro/access links and CWDM systems.
Compact full band optical spectrum analyzers for CWDM, DWDM and ROADM systems testing.
High resolution OSA with lab performance in a field-ready tester for spectral analysis of 10/40/100 and 400 G DWDM networks.
Full range of optical spectrum analyzers for spectral measurements in CWDM, DWDM, and ROADM testing-based systems, providing true OSNR measurements based on the unique VIAVI in-band OSNR method.
Compact, low-cost test solution for installation, maintenance, and upgrades of CWDM & DWDM networks.
The first in-service, in-band Pol-Mux OSNR testing solution to optimize your high-speed network performance.

Support at Every Step

We provide support, services, comprehensive training and the resources you need. It’s all part of what we do to maximize the value of your VIAVI investment.


Value add services that compliment your VIAVI system solution and instrument portfolio to provide a total cost of ownership

Customer Care

Customer Service that provides Return Material Authorization (RMA) for repair and calibration


Technical education solutions, product training, and blended learning for technicians who are using new products or working with existing tools

Technical Assistance

Technical Assistance Center to assist you in using/configuring products or address issues regarding product performance

How to Get Started

Interested in a product demonstration? Contact us for more info, receive a price quote, or find out how to buy.